The amount of heat per unit mass needed to raise the temperature by one degree Celsius is known as the specific heat.
Thus, If a phase shift occurs, the relationship is invalid because the temperature is unaffected by the heat added or lost during a phase transition.
Water has the highest specific heat of any common substance at 1 calorie/gram °C = 4.186 joule/gram °C. Water thus plays a crucial part in controlling temperature.
Water has a far higher specific heat per gram than a metal does. Comparing the molar specific heats of different compounds is more useful for the majority of applications.
In accordance with the Law of Dulong and Petit, the molar specific heats of the majority of solids at room temperature and higher are almost constant.
Thus, The amount of heat per unit mass needed to raise the temperature by one degree Celsius is known as the specific heat.
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what is meant by resolution of a vector
A vector's resolution is the splitting of a single vector into two or more vectors in different directions that together produce the same effect as a single vector. Component vectors are the vectors formed after splitting.
In general, we divide a vector into three components:
component along the x-axis (x-component), component along the y-axis (y-component), and component along the z-axis (z-component).example:
For vector resolution, a vector can be resolved into many different vectors. Consider the following example: Take two numbers, say 4 and 6, and add them together to get 10. Furthermore, 10 is now broken or resolved. However, the number 10 can also be broken down into many other numbers, such as -10 = 5 + 5; 10 = 3 + 7, and so on.
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Hello people ~
When a comb rubbed with dry hair attracts pieces of paper. This is because the______
(a) comb polarizes the piece of paper
(b)comb induces a net dipole moment opposite to the direction of field
(c)electric field due to the comb is uniform
(d) comb induces a net dipole moment perpendicular to the direction of field
\(\bold{Heya!}\)
Answer :-(b) comb induces a net dipole moment opposite to the direction of field.
Explanation :-When a comb rubbed with dry hair it's attracts pieces of piece of paper. This is because the comb that induces of the dipole net that of the moment thatopposite of the field. And, This happens the field dueing to charge of the comb induces of the dipole moment in the paper of the molecules in the dielectric.
Hopefully This Helps ! ~
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\(\underline{Answer :}\)
Jaceysan ~
Answer:
Option B
Explanation:
When a comb is rubbed with dry hair it induces some charge or its get charged either positive or negative
As paper remains in neutral hence it attracts the paper
Hence option B is correct
Write the relation between mass and weight of a body
Answer:
\(\text{Weight} = \text{Mass} \times \text{Gravitational acceleration}\)
Explanation:
Mechanical energy is the form of
energy associated with the
_ , _ or _ of an object.
Mechanical energy is the type of energy connected to an object's position and motion. Thermal energy is the sum of the kinetic and potential energies of all the components in an object.
What is potential energy, exactly?Potential energy is a form of stored energy that is dependent on the relationship between different network elements. When a spring is strained or stretched, its potential energy increases. A steel ball has more heat energy when it is raised above surface than when it is brought to Earth.
What factors determine potential energy?An object's potential energy relies on where it is in relation to other items. For instance, a brick laying on the ground has less heat energy than one dangling off of a 2 different building.
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Which of the following is correct? Multiple Choice When AP is rising, MC is falling, and when AP is falling, MC is rising. When MP is rising, MC is falling, and when MP is falling, MC is rising. There is no relationship between MP and MC. When MP is rising, MC is rising, and when MP is falling, MC is falling.
The statement which is correct is that when MP is rising MC is falling, and when MP is falling MC is rising and is denoted as option B.
What is MP?This is referred to as marginal product and is referred as the extra output derived as result of additional inputs.
MC on the other hand is known as marginal cost and they have an inverse relationship such that when MP is rising , MC is falling and vice versa thereby making it the most appropriate choice.
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2. A body of ma 2kg initially moving with a velocity of 1m/ i acted upon by a horizontal force of 6N for 3econd. Find (i) Impule given to the body (ii) Final peed of the body
(i) Impulse given to the body is 18 Ns.
(ii) Final speed of the body 10 m/s.
The result is obtained by using Impulse-Momentum Theorem.
What is Impulse-Momentum Theorem?The Impulse-Momentum Theorem states that impulse of an object equals to the change of the momentum. It can be expressed as
I = mΔv
Where
I = Impuls (Ns or kg m/s)Δp = change of momentum (Ns or kg m/s)m = mass of an object (kg)Δv = change of velocity (m/s)The impulse quantity is also calculated by multiplying force and time.
I = FΔt
Where
F = force acting on an object (N)Δt = time (s)A body of mass 2 kg initially moving with a velocity of 1 m/s is acted upon by a horizontal force of 6 N for 3 second.
Find (i) Impulse given to the body (ii) Final speed of the body!
We have
m = 2 kgv₁ = 1 m/sF = 6 NΔt = 3 sUsing the formula above, the impulse given to the body will be
I = FΔt
I = 6 × 3
I = 18 Ns
The final speed is
I = mΔv
18 = 2(v₂ - 1)
9 = v₂ - 1
v₂ = 9 + 1
v₂ = 10 m/s
Hence, the impulse and final speed of the body is 18 Ns and 10 m/s, respectively.
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A cold drink initially at 35°F warms up to 42°F in 2 min while sitting in a room of temperature 72°F. How warm will the drink be if left out for 20 min? °F. If the drink is left out for 20 min, it
To determine how warm the drink will be after 20 minutes, we can use the concept of thermal equilibrium and the rate at which the temperature changes.
Let's assume that the rate of temperature change follows a linear relationship, meaning that the temperature increases at a constant rate over time.In the given scenario, the drink initially at 35°F warms up to 42°F in 2 minutes while sitting in a room with a temperature of 72°F. We can calculate the rate of temperature change as follows:
Rate of temperature change = (Final temperature - Initial temperature) / Time taken
Rate of temperature change = (42°F - 35°F) / 2 minutes
Rate of temperature change = 7°F / 2 minutes
Rate of temperature change = 3.5°F/minute
Now, we can calculate the change in temperature for 20 minutes:
Change in temperature = Rate of temperature change * Time
Change in temperature = 3.5°F/minute * 20 minutes
Change in temperature = 70°F
To find the final temperature, we add the change in temperature to the initial temperature:
Final temperature = Initial temperature + Change in temperature
Final temperature = 35°F + 70°F
Final temperature = 105°F
Therefore, if the drink is left out for 20 minutes, it will warm up to a temperature of 105°F.
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Why did Newton think that a force must act on the moon?
Newton believed that a force must act on the moon because the moon's motion can be explained by assuming that it is under the influence of a force that causes it to move in a curved path around the Earth.
Newton understood that objects in motion tend to move in a straight line, so he reasoned that something must be acting on the moon to cause it to curve around the Earth instead of moving in a straight line. He realized that the force that causes the moon to move in a curved path around the Earth is the gravitational force of attraction between the two objects.
Newton's law of universal gravitation states that every object in the universe attracts every other object with a force that is proportional to the product of their masses and inversely proportional to the square of the distance between them. This law explains how the moon is held in orbit around the Earth, and it also explains many other phenomena in the universe, such as the motion of planets around the sun.
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Gravity on Jupiter is 25 m/s/s, what is the weight of a 12 kg object on Jupiter?
Answer:
300 Newtons
Explanation:
Weight is the force of attraction between two bodies, one usually larger (like a planet), and one smaller (like a person). Force can be calculated using the formula: Force = mass × acceleration.
The mass here is 12kg, the acceleration, which in this case, is the acceleration due to gravity is 25m/s/s, by plugging in our values, we have
Force = 12 × 25 = 300 Newtons or 300 N for short.
where does the 0.7 kg piece land relative to where it was fired from? (give the horizontal distance in meters from the launch point to where the 0.7 kg piece lands.)
63.45 m distance the 0.7 kg piece land relative to where it was fired from.
u= 60 m/s
g=9.8 m/s²
horizontal distance=u²sin²Θ/2g
H=60²sin²86/19.6
H= 63.45 m
Distance is the length between two points or items, and it is directionless. Since distance is a scalar attribute, it only takes into account the overall magnitude and ignores the start and end locations. Being a scalar attribute, distance may only be positive or zero; it cannot be the opposite.
Although kilometers (km) and centimeters (cm) or millimeters (mm) can also be used to express shorter distances, the meter (m) is the most used unit of measurement for distance (mm). When calculating distance, the letter D is usually used to denote the distance traveled.
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You are standing on a sheet of ice that covers the football stadium parking lot in Buffalo; there is negligible friction between your feet and the ice. A friend throws you a 0.400-kg ball that is traveling horizontally at 10.0 m/s. Your mass is 70.0 kg. (a) If you catch the ball, with what speed do you and the ball move after ward
Answer:
0.38m/s
Explanation:
Given data
M1= 0.4kg
U1= 10m/s
M2= 70kg
U2= 0m/s
The system experiences an inelastic collision, the expression for inelastic collision is
M1U1+ M2U1= (M1+M2)V
Subsitute
0.4*10+ 70*0= (0.4+10)*V
4= 10.4V
4=10.4V
V= 4/10.4
V=0.38m/s
Hence the common velocity is 0.38m/s
how do you feed a dog medicine
There are lots more but these are the best
A homogeneous mixture is made by dissolving 25.6 grams of solid barium iodide in 1000 g of water. This is an example of a . In the mixture, barium iodide would be called the and water would be called the . Submit AnswerRetry Entire Group9 more group attempts remaining
A homogeneous mixture is made by dissolving 25.6 grams of solid barium iodide in 1000 g of water. This is an example of a homogeneous solid mixture. In the mixture, barium iodide would be called the solute, and water would be called the solvent.
A solvent is simply a substance that can dissolve other molecules and compounds, which are known as solutes. A homogeneous mixture of solvent and solute is called a solution, and much of life’s chemistry takes place in aqueous solutions, or solutions with water as the solvent.
Because of its polarity and ability to form hydrogen bonds, water makes an excellent solvent, meaning that it can dissolve many different kinds of molecules. Most of the chemical reactions important to life take place in a watery environment inside of cells, and water's capacity to dissolve a wide variety of molecules is key in allowing these chemical reactions to take place.
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According to the definition of matter, what does matter have besides mass?
Answer:
Volume.
Explanation:
Matter refers to basically anything that takes up space. For something to take up space, it is needed to have mass and volume.
Hope this helps! (:
Answer:
Volume and Mass
Explanation:
Takes up space
Hope this helps!
3. How did Kepler's work influence Newton?
Kepler understood that forces caused the motion of planets, but did not understand how to describe this
motion.
Newton understood that forces caused the motion of planets, but did not understand how to describe this
motion.
O Kepler acted as a mentor for Newton as a young astronomer
O Kepler described the motion of planets, but did not explain the cause of this motion
Answer:
How Kepler's work influenced Newton is;
Kepler described the motion of planets, but did not explain the cause of this motion
Explanation:
Kepler's first law states that the motion of the planets are elliptical
Kepler's second law states that the elliptical orbit of the planets round the Sun at the focus of the ellipse is such that an equal area at equal times is swept by the line between the planets and the Sun
Kepler's third law states that the distance of a planet from the Sun and the time it takes the planet to move round the Sun are related mathematically
From Kepler's law Sir Isaac Newton explained the causes of motion
f(x)= 10x-5
What is the value of f-1(-4) ?
Answer:
\(f^{-1}(-4) = \frac{1}{10}\)
Explanation:
Firstly finding \(f^{-1}(x)\)
So,
\(f(x) = 10x-5\)
Substitute \(y = f(x)\)
\(y = 10x-5\)
Exchange the values of x and y
\(x = 10y-5\)
Solving for y
\(x = 10y-5\)
Adding 5 to both sides
\(10y = x+5\)
Dividing both sides by 10
\(y = \frac{x+5}{10}\)
Replace \(y = f^{-1}(x)\)
\(f^{-1}(x) = \frac{x+5}{10}\)
For x = -4
\(f^{-1}(-4) = \frac{-4+5}{10}\)
\(f^{-1}(-4) = \frac{1}{10}\)
Answer:
\(\frac{1}{10}\)
Explanation:
f(x) = y (output)
y = 10x - 5
Switch variables.
Solve for y.
x = 10y - 5
x + 5 = 10y
x/10 + 1/2 = y
\(f^{-1}(x)\) = 1/10x + 1/2
Put x as -4.
1/10(-4) + 1/2
-4/10 + 1/2
-4/10 + 5/10
= 1/10
1. Which of the following contains scarar quantities only a) Speed, energy b) velocity, energy (1) 9elocity, marmentum d) speed, displacement
The correct answer is: "d) speed, displacement". Speed and displacement are merely scalar. Speed is magnitude without direction, a scalar quantity. Displacement is a scalar quantity that only measures an object's position change.
The only scalar option is "d) speed, displacement." Scalar quantities can be described solely by their magnitude or numerical value. They have no vectors. Speed is a scalar quantity since it measures distance covered. It measures speed without direction.
Displacement means moving an object in a certain direction. Displacement is a scalar quantity if just the magnitude of the position shift is considered. Velocity is a vector quantity because it comprises magnitude (speed) and direction. It shows how fast an object changes direction. Momentum, the product of mass and velocity, is a vector quantity. Direction and magnitude. Therefore only "d) speed, displacement" is scalar since it includes speed (scalar) and disregards direction for displacement.
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how much sugar can dissolve in 25 ml of water 25 C
Answer:
204 g/ 100 ml
Explanation:
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How long was a 50 W lightbulb left on for if 500,002 J were burned?
" 50 W " means " 50 Watts " or " 50 Joules per second ".
(500,002 J) / (50 J/sec) = 10,000.04 seconds
(That's 2 hours 46 minutes 40.04 seconds.)
A car is stationary. It accelerates at 0.8 ms^2
for 10 s and then at 0.4 ms^2
for a further 10 s. Use
the equations of motion to deduce the car’s final displacement. You will have to split the journey
into two parts, since the acceleration changes after 10 s.
Answer:
the car’s final displacement is 60 m
Explanation:
Given;
initail velocity of the car, u = 0
acceleration of the car, a = 0.8 m/s²
time of motion, t = 10 s
The first displacement of the car:
\(x_1 = ut + \frac{1}{2} at^2\\\\x_1 = 0 + \frac{1}{2} (0.8)(10)^2\\\\x_1 = 40 \ m\)
The second displacement of the car;
acceleration, a = 0.4 m/s², time of motion, t = 10 s
\(x_2 = ut + \frac{1}{2} at^2\\\\x_2 = 0 + \frac{1}{2} (0.4)(10)^2\\\\x_2 = 20 \ m\)
The final displacement of the car;
x = x₁ + x₂
x = 40 m + 20 m
x = 60 m
Therefore, the car’s final displacement is 60 m
When there is a Crescent Moon in the night sky, how much of the entire Moon’s surface is actually lit by the Sun? Why?
Please help me quickly
Answer:
As moon goes round the earth we see the 50% surface only on full moon nights.
In the picture inner moon shows the actual illumination and outer moons shows our view from Earth
Explanation: i cant get the picture to load so....
A discrete spectral line occurs at an angle of 9.1° in the first order spectrum. If the grating has 3,660 lines/cm, what is the wavelength of this color of light?
Answer:
your answer would be c !
Explanation:
Suppose a wheel with a 15. 0 inch diameter is used to turn a water valve stem with a radius of 0. 950 inches. What is the ideal mechanical advantage?.
The ideal mechanical advantage of a wheel with a 15. 0 inch diameter is used to turn a water valve stem with a radius of 0. 950 inches is 7.89
Diameter of wheel, D = 15 in
Diameter of stem, d = 0.95 in
Radius of wheel, R = D / 2
R = 15 / 2
R = 7.5 in
Radius of stem, r = d / 2
r = 0.95 in
IMA = R / r
IMA = Ideal Mechanical Advantage
IMA = 7.5 / 0.95
IMA = 7.89
Therefore, the ideal mechanical advantage is 7.89
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LL Bean shifted from collecting structure data to unstructured
because:
A). the data warehouse is on site.
B). they a single marketing channel
C). the volume of data collected over time stayed
consist
LL Bean shifted from collecting structured data to unstructured data because the volume of data collected over time remained consistent.
Collecting structured data typically involves organizing and storing data in a predefined format, such as a data warehouse. However, LL Bean's decision to shift to unstructured data suggests that their existing data warehouse, which is likely designed for structured data, may not have been capable of efficiently handling the increasing volume of data collected over time.
Unstructured data, on the other hand, does not adhere to a specific format and can accommodate a larger and more diverse range of data types, allowing LL Bean to effectively manage the growing volume of data they were collecting.
Please note that the provided options A and B are not directly relevant to the reason stated for LL Bean's shift to unstructured data.
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6. A ball rolled 125 m from the top of a hill to the bottom of a hill. How long
did it take for the ball to roll if the average velocity was 5m/s? *
Help Please!
Think about how you can get the color white from using light versus how you can get the color white from using paint or dye. Now, think about how you can get the color black from using light versus from paint or dye. Using this, explain why we call coloring from light “additive” and coloring from paint or dyes “subtractive”.
Answer: Subtractive colors absorb OR subtract some lights causing it to reflect, and creating white.
Explanation:
Subtractive colors are created by completely or partially absorbing (or subtracting) some light wavelengths and reflecting others.
how does charles law, archimedes principle, and boyles law the three principles above explain hot-air balloon flight?
The heating of air inside the balloon causes the volume to expand (Charles's Law), resulting in a decrease in the pressure compared to the surrounding air (Boyle's Law).
Hot-air balloon flight can be explained by the combined principles of Charles's Law, Archimedes' Principle, and Boyle's Law.
Charles's Law states that the volume of a gas is directly proportional to its temperature, assuming the pressure remains constant. In the case of a hot-air balloon, the air inside the balloon is heated, causing the gas molecules to move faster and increase in temperature. As a result, the volume of the gas expands, leading to an increase in the volume of the balloon.
Archimedes' Principle states that an object immersed in a fluid experiences an upward buoyant force equal to the weight of the fluid displaced by the object. In the context of a hot-air balloon, the heated air inside the balloon is less dense than the surrounding cool air. The buoyant force acting on the balloon is equal to the weight of the air displaced by the balloon. This buoyant force is greater than the weight of the balloon itself and the payload, causing the balloon to rise.
Boyle's Law states that the pressure of a gas is inversely proportional to its volume, assuming the temperature remains constant. When the air inside the balloon is heated, the volume increases. As a result, the pressure inside the balloon decreases relative to the surrounding air pressure. The pressure difference creates a net upward force, contributing to the balloon's ascent.
In summary, the combined effects of Charles's Law, Archimedes' Principle, and Boyle's Law explain hot-air balloon flight. The heating of air inside the balloon causes the volume to expand (Charles's Law), resulting in a decrease in the pressure compared to the surrounding air (Boyle's Law). The buoyant force (Archimedes' Principle) acting on the less dense heated air allows the balloon to rise.
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Explain how friction affects the work done by machines.
Friction affects the work done by machines by reducing the mechanical advantage of that machine.
MA = \(F_{o}\) / \(F_{i}\)
MA = Mechanical advantage
\(F_{o}\) = Output force
\(F_{i}\) = Input force
Mechanical advantage is the ratio of output force to input force in a system.
According to law of conservation of energy, input energy is equal to output energy. It is true in the machines also but some of the output energy is not necessarily asked of the machine. That energy which is not useful is heat produced due to friction.
Therefore, friction affects the work done by machines by reducing the mechanical advantage of that machine.
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Tyler is in downtown San Antonio entertaining the tourists with amazing feats of physics. He carries a nickel
(mass of 5.0 grams) up to the top of the Tower of the Americas and places it on the edge of the observation
deck, a height of 124 meters. Tyler pushes the nickel off the edge of the Tower, and then tells the tourists
that he will be able to calculate the velocity of the nickel just before it hits the ground. What will be the
nickel's velocity?
Answer:
The velocity of the nickel just before it hits the ground is approximately 49.3 m/s
Explanation:
In order to calculate the velocity of the nickel just before it hits the ground, we recall the kinematic equation of motion, v² = u² + 2·g·h, where the variables of the equation are defined as follows;
v = The velocity of the nickel just before it hits the ground after it is pushed off the observation deck
u = The initial velocity of the nickel just before it is pushed off the observation deck = 0 m/s
g = The acceleration due to gravity = 9.8 m/s²
h = The height from which he nickel is pushed off the edge = 124 m
Substituting the given values and the constant, "g", we have;
v² = 0² + 2 × 9.8 × 124 = 2,430.4
v = √2,430.4
Using a graphing calculator, we have;
v = √2,430.4 = 14·√(62/5) ≈ 49.3
The velocity of the nickel just before it hits the ground = v ≈ 49.3 m/s.
a series rlc ac circuit has a capacitive reactance of 55 ω, and inductive reactance of 25 ω, and a resistance of 40 ω. what is the phase constant of this circuit?
The phase constant of this circuit is approximately -36.87°.
The phase constant of a series RLC AC circuit can be calculated using the following formula:
Phase constant (Φ) = arctan((inductive reactance - capacitive reactance) / resistance)
Given the values, we have capacitive reactance (Xc) = 55 Ω, inductive reactance (Xl) = 25 Ω, and resistance (R) = 40 Ω. Plugging these values into the formula:
Φ = arctan((25 - 55) / 40) = arctan(-30 / 40)
Φ ≈ -36.87°
The phase constant of this circuit is approximately -36.87°.
To further elaborate, the phase constant in a series RLC AC circuit refers to the phase shift between the voltage across the resistor and the voltage across the combination of the inductor and capacitor.
In this formula, the inductive reactance (Xl) is calculated as 2πfL, where f is the frequency of the AC source and L is the inductance of the circuit. The capacitive reactance (Xc) is calculated as 1/(2πfC), where C is the capacitance of the circuit.
When the inductive reactance is greater than the capacitive reactance, the circuit is said to be "inductive" and the phase constant will be positive (leading).
When the capacitive reactance is greater than the inductive reactance, the circuit is said to be "capacitive" and the phase constant will be negative (lagging).
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