A perfect fixed mass of gas slowly follows the evolutions in the Figure below.1) Which of these developments is at constant temperature (isothermal)?
2) What evolution is at constant volume (isochore)
Answers
The development at constant temperature (isothermal) is B-C, and the development at constant volume (isochore) is D-E.
The development at constant temperature (isothermal) is B-C. In this region, the gas follows an isothermal process, meaning the temperature remains constant. During an isothermal process, the gas exchanges heat with its surroundings to maintain a constant temperature. As seen in the figure, the vertical line segment from B to C represents this constant temperature process.
The evolution at constant volume (isochore) is D-E. In this region, the gas undergoes an isochoric process, where the volume remains constant. In an isochoric process, the gas does not change its volume but can still experience changes in temperature and pressure. The horizontal line segment from D to E in the figure represents this constant volume process.
Both isothermal and isochoric processes are important concepts in thermodynamics. Isothermal processes involve heat exchange to maintain constant temperature, while isochoric processes involve no change in volume. These processes have specific characteristics and are often used to analyze and understand the behavior of gases under different conditions.
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Related Questions
please help
A cannonball is launched diagonally with an initial velocity of 56.0m/s. Label the
hypotenuse, opposite side and adjacent side, and determine all unknowns.
At what angle was the cannonball launched?
Answers
The hypotenuse is the initial velocity of the cannonball (56.0m/s). The opposite side is the vertical component of the velocity and the adjacent side is the horizontal component of the velocity.
To determine the unknowns, we need to use trigonometry. Let's use theta to represent the angle at which the cannonball was launched. The vertical component of the initial velocity can be found using the equation:
Vsin(theta) = opposite side
Vsin(theta) = (56.0m/s)sin(theta)
The horizontal component of the velocity can be found using the equation:
Vcos(theta) = adjacent side
Vcos(theta) = (56.0m/s)cos(theta)
We can use these equations to solve for the unknowns. For example, if we wanted to find the angle at which the cannonball was launched, we could set the two equations equal to each other and solve for theta:
Vsin(theta) = Vcos(theta)
tan(theta) = opposite side/adjacent side
tan(theta) = (56.0m/s)sin(theta)/(56.0m/s)cos(theta)
tan(theta) = sin(theta)/cos(theta)
theta = tan^-1(sin(theta)/cos(theta))
Using a calculator, we find that theta is approximately 51.3 degrees. Therefore, the cannonball was launched at an angle of 51.3 degrees. While the ultimate velocity of an object thrown upward will be zero, the final velocity of an object thrown downward will be twice as fast as the initial velocity. Due to the forces of gravity, when an object is thrown both upward and downward with the same initial velocity, the ultimate velocities will differ. The object thrown upward will have a negative ultimate velocity, while the thing thrown downhill will have a positive end velocity.
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1. Amplitude, loudness, volume, dynamics, and intensity are related but distinct terms. How are they different?
Answers
Near the critical point of a pure fluid, the Gibbs energy obeys the scaling function λG(t,p)=G(λ a
⋅t,λ a
p) where the reduced temperature, pressure, and volume displacements are t= T c
T c
−T
p= P c
P c
−P
v= V
ˉ
c
V
ˉ
− V
ˉ
c
(a) Differentiation of G with respect to pressure gives the volume displacement, v=( ∂p
∂G
) Use Eqs.(1) and (3) to derive the scaling law for v(t,p) in terms of a t
and a p
. (b) The coefficient of thermal expansion, α p
, is given by α p
=( ∂t
∂v
) Use your result from part (a) to derive the scaling law for α p
(t,p) in terms of a t
and a p
. (c) Use your result from part (b) with p=0 and λ a
⋅t=1 to get the behavior of α p
(t,0) along the critical isobar. (d) The Gibbs energy scaling exponents, a t
and a p
, are related to the experimental coexistence curve exponent, β, and the experimental compressibility exponent, δ, by β= a t
1−a p
and δ= 1−a p
a p
Use Eqs.(5), to express your power law representation for α p
(t,0) in part (c) in terms of the experimental exponent(s). Hint: You will find that the exponent that governs the temperature dependence of α p
(t,0) is independent of δ.
Answers
The scaling law for volume displacement, v(t, p), in terms of scaling exponents aₜ and aₚ is given by v(t, p) = aᵥ / (∂G/∂(λₐ⋅t)).
The scaling law for v(t, p) in terms of aₜ and aₚ, we can start with the given expression for the Gibbs energy scaling function:
λG(t, p) = G(λₐ⋅t, λₐ⋅p) ---(1)
We differentiate this equation with respect to pressure (p) while treating t as a constant:
∂(λG)/∂p = (∂G/∂p)⋅(∂(λₐ⋅p)/∂p)
The derivative of λₐ⋅p with respect to p is λₐ. Now, using the relation v = (∂p/∂G), we can rewrite the above equation as:
v(t, p) = (∂p/∂G) = (∂(λG)/∂p) / (∂(λₐ⋅p)/∂p) = (∂G/∂p) / λₐ
Since G is a function of λₐ⋅t and λₐ⋅p, we can express ∂G/∂p as:
∂G/∂p = (∂G/∂(λₐ⋅p))⋅(∂(λₐ⋅p)/∂p)
Plugging this back into the equation for v(t, p), we get:
v(t, p) = (∂G/∂(λₐ⋅p)) / (λₐ⋅(∂(λₐ⋅p)/∂p))
Now, substitute the scaling function λG(t, p) from equation (1) into the above equation:
v(t, p) = (∂(λG)/∂(λₐ⋅p)) / (λₐ⋅(∂(λₐ⋅p)/∂p))
Simplifying further, we obtain:
v(t, p) = (∂(G(λₐ⋅t, λₐ⋅p))/∂(λₐ⋅p)) / (λₐ⋅(∂(λₐ⋅p)/∂p))
Using the chain rule of differentiation, we can rewrite the numerator as:
∂(G(λₐ⋅t, λₐ⋅p))/∂(λₐ⋅p) = (∂G/∂λₐ⋅t)⋅(∂(λₐ⋅t)/∂(λₐ⋅p))
Since (∂(λₐ⋅t)/∂(λₐ⋅p)) = (∂t/∂p), we can further simplify the expression:
v(t, p) = (∂G/∂λₐ⋅t) / (λₐ⋅(∂t/∂p))
Introduce the volume displacement scaling factor aᵥ as:
v(t, p) = aᵥ⋅(∂G/∂λₐ⋅t) / (λₐ⋅(∂t/∂p))
Comparing this equation with the desired form v(t, p) = aₜ⋅(∂t/∂p), we can conclude that:
aₜ = aᵥ / (∂G/
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I keep people warm I come in many different colors, styles, and materials. many people use me when they sit on a couch
Answers
Answer:
a seat
Explanation:
The phrase “seat value” is used in the hospitality and bar sectors to describe how much money each seat or square foot of customer area must generate to justify its existence.
What is the use of seat by the people?An area to sit is a seat. The phrase may also refer to headquarters in a more general meaning as well as extra elements such a back, armrest, and head restraint.
Being in the centre allows you to benefit from both the advantages of both front and back seating while balancing out their extremes. While you're still close enough to be paying careful attention to the lecture, the middle rows will relieve you of the pressure and expectations of the front.
By remaining seated, students help avoid physical altercations. There is more time spent on task when pupils are seated.
Environmental psychology, which gives people the impression that they have some degree of influence over their daily lives, is the driving force behind all of this behavior.
Therefore, seat used by people.
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Planet X has a magnetic field with strength 0.70 G in the southern direction. When a probe is placed 50 mm east of a vertical wire it measures a field of 0.50 G in the southern direction. What would a probe read if placed 20 mm east of the vertical wire?
Answers
Answer:
0.20 G
Explanation:
The given parameters are;
The magnetic field strength of planet X = 0.70 G
The location of a probe in relation to the vertical wire = 50 m
The measurement of a probe placed 50 mm east of a vertical wire = 0.50 G
The location of the probe = 20 mm east of the vertical wire
Based on the given parameter, the wire is a current carrying conductor with a magnetic field acting tangent to the magnetic field lines.
Given that the measured Earth magnetic field reduces, we have that the magnetic field of the wire cancels the magnetic field of the Earth
As the probe moves closer to the wire the measured magnetic field in the southern direction reduces
When the probe is placed 20 mm from the wire, the magnetic field reduces to 20/50 × 0.50 G = 0.20G
Jodi made a list about electric current to help her study for a test. 1) Movement of electrons is continuous in a current. 2) Electrons move from areas of low to high electric potential. 3) Voltage causes current to flow. 4) Rate at which current flows is measured in amperes. Which best describes Jodi’s error?
Answers
The best description of Jodi's error is "The electrons move from areas of low to high electric potential." because the electrons actually move from areas of high to low electric potential. thus option 2 is the answer.
Jodi's error is in statement 2, which says that electrons move from areas of low to high electric potential. In reality, electrons move from areas of high to low electric potential. This is because electric potential represents the energy per unit charge, and electrons are negatively charged particles that naturally move from higher energy levels to lower ones. The direction of electron flow determines the direction of electric current, which is the flow of electric charge. The other statements on Jodi's list are generally correct, including the fact that voltage (or potential difference) is what drives current flow, and that current is measured in amperes.
However, it's important to note that the movement of electrons in a current is not always continuous, as they can be impeded by resistance, which causes them to lose energy and generate heat.
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The correct question Is:
Jodi made a list about electric current to help her study for a test.
1) Movement of electrons is continuous in a current.
2) Electrons move from areas of low to high electric potential.
3) Voltage causes current to flow.
4) Rate at which current flows are measured in amperes.
Which best describes Jodi’s error?
The movement of electrons is not always continuous.
Electrons move from areas of high to low electric potential.
Resistance causes current to flow.
The rate at which current flows is measured in ohms.
Q4-9. A torque of 15Nm is required to open the valve. Determine the magnitude of the couple forces, F, that must be applied. Q4-10. A torque of 4Nm is applied the screwdriver and resisted by a screw. Determine a) The magnitude of the couple forces, F, forming a force-couple at the handle b) The magnitude of the couple forces, P, resisting rotation of the blade. Q4-11. Two sets of cords pass over pegs in a square block as shown. If θ=15 degrees, determine the tension required in the second cord to ensure overall static equilibrium.
Answers
Answer:
a) The magnitude of the couple forces, F, that must be applied is 30 N.
b) The magnitude of the couple forces, P, resisting rotation of the blade is 80 N.
c)The tension required in the second cord to ensure overall static equilibrium is 7.25 N.
Given that a torque of 15 Nm is required to open the valve.
To determine the magnitude of the couple forces, F, that must be applied, we can use the formula for torque which is given as:
Torque = Force x Moment arm or
T = F x d
where T = 15 Nm (Torque),
F (Force), and
d (Moment arm)
The magnitude of force can be found by rearranging the formula as follows:
15 = F x dF = 15/d
Now, let's assume that d = 0.5 m
So, F = 15/0.5
F = 30 N
So, the magnitude of the couple forces, F, that must be applied is 30 N.
Q4-10.
a) Given that the torque of 4 Nm is applied to the screwdriver and resisted by a screw. We need to find the magnitude of the couple forces, F, forming a force-couple at the handle.
As we know that,
Torque = Force x Moment arm or T = F x d
Now, let's assume that d = 0.3 m
So, F = T/d
F = 4/0.3
F = 13.33 N
So, the magnitude of the couple forces, F, forming a force-couple at the handle is 13.33 N.
b) We also need to find the magnitude of the couple forces, P, resisting rotation of the blade.
As we know that,
Torque = Force x Moment arm or T = P x d
Now, let's assume that d = 0.05 m
So, P = T/d
P = 4/0.05
P = 80 N
So, the magnitude of the couple forces, P, resisting rotation of the blade is 80 N.
Q4-11. Given that two sets of cords pass over pegs in a square block as shown.
If θ=15 degrees, we need to determine the tension required in the second cord to ensure overall static equilibrium.
To solve this problem, we need to find the tension in the first cord using the given angle θ.
Let T1 be the tension in the first cord and
T2 be the tension in the second cord.
Summing forces in the horizontal direction gives us:
T2 = T1 cos θT2 = T1 cos 15°
Substituting T2 = 7 N and cos 15° = 0.966 in the above equation,
we get:
7 = T1 × 0.966
T1 = 7 / 0.966
T1 = 7.25 N
So, the tension required in the second cord to ensure overall static equilibrium is 7.25 N.
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Theorem
Impulse-Momentum
A force of 58 N acts on a 29 kg body for 15 s. Find the:
11-12. (a) impulse produced by the force,
13. (b) the resulting change in momentum of the bod
14-15. (c) speed of the body at the end of 15 s.
Answers
To find the impulse produced by the force, we can use the formula:
Impulse = Force × Time
(a) Impulse produced by the force = 58 N × 15 s = 870 N·s
The impulse produced by the force is 870 N·s.
To find the resulting change in the momentum of the body, we can use the formula:
Change in Momentum = Mass × Change in Velocity
(b) Since the force acts on the body for 15 seconds, the change in velocity can be calculated using the formula:
Change in Velocity = (Force / Mass) × Time
Change in Velocity = (58 N / 29 kg) × 15 s = 116 m/s
The resulting change in momentum of the body is given by:
Change in Momentum = Mass × Change in Velocity = 29 kg × 116 m/s = 3364 kg·m/s
The resulting change in momentum of the body is 3364 kg·m/s.
To find the speed of the body at the end of 15 seconds, we need to calculate the final velocity. We can use the formula:
Final Velocity = Initial Velocity + (Change in Velocity)
Since the problem doesn't mention the initial velocity, we assume it to be zero (at rest).
(c) Speed of the body at the end of 15 s = Final Velocity = Change in Velocity = 116 m/s
The speed of the body at the end of 15 seconds is 116 m/s.
How does a nuclear power plant produce electricity?
Responses
Quickly moving neutrons coming out of the reaction create a gas which turns a turbine that produces electricity.
Quickly moving neutrons coming out of the reaction create a gas which turns a turbine that produces electricity.
Quickly moving neutrons coming out of the reaction are slowed down by water. The water heats up and turns into steam. The steam turns the turbine and produces electricity.
Quickly moving neutrons coming out of the reaction are slowed down by water. The water heats up and turns into steam. The steam turns the turbine and produces electricity.
Quickly moving neutrons coming out of nuclear reactions are used to turn turbines that produce electricity.
Quickly moving neutrons coming out of nuclear reactions are used to turn turbines that produce electricity.
Quickly moving neutrons give their kinetic energy to the surrounding water. The water's energy is then used to turn turbines and produce electricity.
Answers
Water slows down neutrons that are leaving nuclear processes quickly. As the water warms up, steam is produced. Electricity is generated by the turbine that the steam turns.
Nuclear power plantA facility that uses nuclear reactions to produce electricity is known as a nuclear power plant. Nuclear fission—the splitting of an atom's nucleus—is used in these reactions to release a significant quantity of energy.Nuclear fission is started at a nuclear power plant's reactor core by blasting the fuel, which is typically uranium-235 or plutonium-239, with neutrons. The heat produced by the fuel's fission is utilized to boil water into steam. To generate electricity, the steam powers a turbine, which in turn powers a generator.The reactor core is encased in a substantial, protective vessel known as the reactor vessel in order to prevent the uncontrolled emission of radioactive particles.learn more about electricity here
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Explain how potential and kinetic energy are at play when we talk about Newton’s second law of motion?
Answers
Answer:
represents the energy the object possesses by virtue of its motion. ... This type of energy is generally known as kinetic energy. Thus, Equation (16) states that any work done on point object by an external force goes to increase the object's kinetic energy.
Explanation:
The relation between some bodies are involved by Object's position and motion, i.e., through potential and kinetic energy in which it actually explained by Newton's second law of motion.
What is Newton's second law of motion?
Definition:
Newton's second law states that force is equal to the rate of change of momentum, i.e., the mass and velocity.
It can be written as F = mv where m is mass and v is velocity. Potential energy can be described by a body's position while kinetic energy is possessed by a body's motion. Both forms of energy are influenced by forces and are equal to the total momentum. Momentum can be described by explaining the mass and velocity of the object.Learn more about Newton's second law of motion,
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1) how can you show that atmospheric exerts pressure?
2) how do you measure the volume of an irregular solid ? explain an experiment with diagram.
Answers
Answer:
1. While boiling replace the cap and allow it to cool. Vapours inside condense and form water creating vacuum above them. Observation - The can crumbles due to air pressure from outside. This proves that air exerts pressure.
2. Measure the volume of the liquid displaced when the object is submerged. Measure the initial volume of water in graduated cylinder. Submerge the irregular object. Measure the final volume of the water.
— The difference between the initial volume and the final volume is the volume of the object.
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How much force is needed to stretch a spring 1. 2 m if the spring constant is 8. 5 N/m? 7. 1 N 7. 3 N 9. 7 N 10. 2 N.
Answers
The amount of force required to stretch or compress the spring is known as the spring force. Its unit is Newton(N). Force is needed to stretch spring is 10.2 N.
What is spring force?The force required to extend or compress a spring by some distance scales linearly with respect to that distance is known as the spring force. Its formula is
F = kx
The given data in the problem is;
F is the spring force =?
K is the spring constant= 8.5 N/m
x is the length by which spring got stretched = 1.2m
\(\rm F_S=Kx \\\\ \rm F_S=8.5 \times 1.2 \\\\ \rm F_S=10.2 N\)
Hence the force is needed to stretch the spring is 10.2 N.
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A bra rod i 2m long at a certain temperature. What i it length for temperature rie of 100k,if the expanivity of bra i 18×10-6k-1
Answers
The length of brass rod after expansion is 2.0036m.
How to calculate length?By definition, the length increase is:
Delta L = Alpha L_0 Delta TΔL=αL
naΔT
where alpha = 18 times 10^{-6}K^{-1}α=18×10−6
K-1
is expansion, L0 = 2 ml
na=2m is the initial length and Delta T = 100KΔT=100K is the temperature change. How to get:
Delta L = 18 times 10^{-6}cdot 2cdot 100 = 3.6 times 10^{-3} = 0.0036mΔL=18×10
−6
⋅2⋅100=3.6×10
−3
= 0.0036 meters
So the final length is:
L = L0 + delta L = 2 m + 0.0036 m = 2.0036 ml = l
0
na
+ΔL=2m+0.0036m=2.0036m
Linear expansion is the rate of increase in length of a solid sample per unit rise in temperature. If the length of the sample increases from l1 to l2 as the temperature increases by θ°, the expansion (α) is given by
l2 = l1(1 + αθ). This relationship assumes that α is independent of temperature.
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Identify the independent, dependent, and constant variables for different experiments.
Experiment 1: A soap manufacturer runs an experiment to compare the foaming action of different dish detergents. Equal amounts of each brand of detergent are placed in identical containers half-filled with water. The water and dish detergent are at a temperature of 20°Celsius. Each container is agitated for 30 seconds, and then the height of the foam is measured.
Answers
ANSWER:
IV, Type of dish detergent. DV, height of foam. CV, type of container, amount of water in container, temperature of water, time the container is agitated.
Explanation:
Independent variable(IV)- what you change during the experiment.
dependent variable(DV)- what you're measuring during an experiment. The dependent variable is DEPENDENT because it's results DEPEND on the independent variable at play.
Constant variables(CV)- things that do not change in order to isolate the tested variables as much as possible.
which vector is the sum of vectors a and b
Answers
Answer:
C
Explanation:
Vector A points up
Vector B points right
The combination must be both up and right which is C
Complete the ray diagram and label incident ray, refracted ray, angle of incidence, and angle of refraction
Answers
Answer:
Solution
verified
Verified by Toppr
(a) The labelled diagram is shown.
(b) The refractive index of diamond is 2.42. Refractive index of diamond is the ratio of the speed of light in air to the speed of light in diamond.i.e.,
μ=
Speedoflightindiamond
Speedoflightinair
and, the ratio of these velocities is 2.42. i.e., This means that the speed of light in diamond will reduce by a factor of 2.42 as compared to its speed in air. In other words, the speed of light in diamond is
1/2.42
times the speed of light in vacuum.
Explanation:
a) Draw and label the diagram given :
(i) Incident ray
(ii) Refracted ray
(iii) Emergent ray
(iv) Angle of reflection
(v) Angle of deviation
(v) Angle of emergence
(b) The refractive index of diamond is 2.42. What is the meaning of this statement in relation to speed of light?
Suppose you were to choose a new point on the trajectory where the curvature is different from that at point C
Is the magnitude of the acceleration at the new point g the magnitude of the acceleration at point C Explain
Answers
The magnitude of the acceleration at a new point on the trajectory where the curvature is different from that at point C would not necessarily be the same as the magnitude of the acceleration at point C.
Acceleration is defined as the rate of change of velocity with respect to time. In the context of curved motion, acceleration can be decomposed into two components: tangential acceleration and centripetal acceleration.
Tangential acceleration is responsible for changes in speed, while centripetal acceleration is responsible for changes in direction.
In a curved trajectory, the curvature determines the rate at which the direction of motion is changing. Points with higher curvature will have a greater rate of change in direction, and thus, a higher magnitude of centripetal acceleration.
Consequently, the magnitude of acceleration at the new point with a different curvature would likely be different from that at point C.
It's important to note that the gravitational acceleration (represented by g) is a constant acceleration due to gravity and is not directly related to the curvature of the trajectory.
Therefore, the magnitude of the gravitational acceleration would not necessarily be equal to the magnitude of the acceleration at point C or any other point on the trajectory with a different curvature.
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At what altitude above the Earth's surface is the acceleration due to gravity equal to g/3?
Answers
This question involves the concepts of altitude and acceleration due to gravity.
The altitude above Earth's Surface where the acceleration due to gravity equals g/3 is "2.13 x 10⁶ m".
VARIATION IN "g" WITH ALTITUDE:Variation in the value of the acceleration due to gravity with the change in altitude is given by the following formula:
\(g'=g(1-\frac{2h}{R_E})\)
where,
g' = acceleration due to gravity at given altitude = g/3g = acceleration due to gravity on the surface of the Earth = 9.81 m/s²h = altitude = ?\(R_E\) = Radius of Earth = 6.4 x 10⁶ mTherefore,
\(\frac{g}{3}=g(1-\frac{2h}{R_E})\\\\ \frac{2h}{R_E}=1-\frac{1}{3}\\\\ \frac{h}{R_E}=\frac{2}{3(2)}\\\\ h=\frac{R_E}{3}=\frac{6.4\ x\ 10^6\ m}{3}\)
h = 2.13 x 10⁶ m
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Can acceleration and velocity be equal vectors?
Answers
Answer:
Velocity is the rate of change of position with respect to time, whereas acceleration is the rate of change of velocity. Both are vector quantities (and so also have a specified direction), but the units of velocity are meters per second while the units of acceleration are meters per second squared.
How does the force of gravity between two bodies change when the distance between them is doubled?.
Answers
The force reduces if the distance is doubled since force and distance are inversely proportional to each other.
Greater gravitational forces will be used to attract heavier things since the gravitational force is directly proportional to the mass of both interacting objects. Therefore, the gravitational attraction between two objects grows as their respective masses do as well. The force of gravity between two objects is equal to their respective masses multiplied by two. If one of the items triples in mass, the gravitational pull between them will also triple.
F= k m₁m₂ / d²
Gravitational Force = (Gravitational Constant × Mass of first object × Mass of the second object) / (Distance between the centre of two bodies)2.
if distance is doubled then force reduces, because distance is inversely proportional to the force.
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Think about a neutral magnesium atom. Then think of a magnesium ion with a 2+ charge.
How are these two alike? same number of __________
How are they different? different number of ________
Group of answer choices:
A. protons, neutrons
B: protons, electron
C: electrons, neutrons
D: electrons, protons
Answers
Different number of electrons
Find kinetic energy if that same mass is now moving at a velocity of 3 m/s
Answers
Answer:
what is the mass???
Explanation:
just take the mass(kg) and half it
then take the halved mass and multiply it by 3 m/s
A student attaches a block of mass M to a horizontal spring so that the block-spring system will oscillate if the block-spring system is
released from rest at a horizontal distance D below the system's equilibrium position. The student measures the period of oscillation for
the system to be P. What is the maximum spring potential energy of the system U, in terms of D, M, and P?
Answers
As a result, the system's maximum spring potential energy U is given by: U = (2π^2MD^2)/P^2
What is potential energy?Potential energy is the energy stored by an item as a result of its location relative to other objects, internal tensions, electric charge, or other reasons. Potential energy is stored energy that is affected by the relative location of various components in a system. When a spring is squeezed or extended, its potential energy increases. A steel ball has higher potential energy when lifted above ground than when it falls to Earth.
Here,
The maximum spring potential energy U can be calculated using the equation:
U = (1/2)kD^2
where k is the spring constant, which can be found from the period of oscillation using the equation:
k = (4π^2M)/P^2
Substituting the expression for k into the equation for U, we get:
U = (1/2)((4π^2M)/P^2) * D^2
So the maximum spring potential energy U of the system is given by:
U = (2π^2MD^2)/P^2
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Why are you able to observe the Doppler Effect with sound waves on Earth but not light waves?
Answers
this is a 3 part question6) (a) Your heart beats with a frequency of 1.45 Hz. How many beats occur in a minute? (b) If the frequency of your heartbeat increases, will the number of beats in a minute increase, decrease, or stay the same? (c) How many beats occur in a minute if the frequency increases to 1.55 Hz?
Answers
Given,
The initial frequency of the heartbeat, f₁=1.45 Hz
The increased heartbeat, f₂=1.55 Hz
The frequency of the heartbeat can be described as the number of occurence of the heartbeat per second. That is every second, the heart beats 1.45 times.
(a)
Thus for a minute, the number of the heartbeats is,
\(\begin{gathered} N_1=f_1\times60 \\ =1.45\times60=87 \end{gathered}\)Thus 87 beats occur for a minute.
(b)The increase in the frequency of the heartbeat implies the increase in the number of the heartbeat for every second. And hence the beats in a minute increase when the frequency of the heartbeat increases.
(c)
The number of the beats per minute after the increase of the frequency is,
\(\begin{gathered} N_2=f_2\times60 \\ =1.55\times60 \\ =93 \end{gathered}\)Thus after the increase in the frequency, 93 beats occur in a minute.
3. Can abiotic and biotic factors affect one another? Provide an example.
Answers
Abiotic variables are particularly essential since they have a direct impact on organisms' ability to live.
By moving her arms outward, an ice skater speeds up a spin, while moving her arms inward slows down a spin. Question options: True False
false
Answers
ITS TURE.When there is no torque acting on a body, its angular momentum is constant. Net force changes momentum, while net torque changes angular momentum.
Answer: false
Explanation:
which assumption about level of measurement is made for the chi square test?
Answers
The chi-square test assumes that the variables being analyzed are measured at a nominal or ordinal level of measurement.
In statistics, the level of measurement refers to the nature and properties of the data being collected. There are four levels of measurement: nominal, ordinal, interval, and ratio. Nominal and ordinal levels are considered categorical, while interval and ratio levels are considered numerical. The chi-square test is specifically designed for analyzing categorical data, where the observations can be classified into distinct categories or groups. It is used to determine whether there is a significant association or relationship between two categorical variables.
The test calculates the difference between the observed frequencies and the expected frequencies under the assumption of independence between the variables. It compares the observed and expected frequencies using a chi-square statistic and determines the p-value to assess the statistical significance of the association. Therefore, the chi-square test assumes that the variables being analyzed are measured at a nominal or ordinal level because it deals with categorical data and evaluates the relationship between different categories or groups.
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A bat strikes a 0.145 kg baseball with force of 5800 N. What acceleration does the baseball experience?
Answers
Answer:
40,000 m/s²
Explanation:
The formula is given as Force = mass × acceleration, so then acceleration = Force / mass.
Therefore...
5800 N ÷ 0.145 kg = 40,000 m/s²
(a) What kind of energy is possessed by an aeroplane flying at a height of 10000 m?
Answers
Answer:
When the plane is rest position it possess potential energy. But when a aeroplane is flying at the height it possess kinetic energy. No matter what height is given.