Answer:
c.Mechanical
Explanation:
A 2.70 kg book rests on an incline of 13.0. You give it a sharp push up the frictionless ramp. It comes to a stop in 25.25 at 17.5 m up the ramp before starting its descent(a) What is the magnitude of the normal force on the book
Answer:
the magnitude of the normal force on the book is 25.78N
Explanation:
The computation of the magnitude of the normal force on the book is shown below
Normal force = N is
= mgcosβ
= 2.70 × 9.8 × cos13°
= 25.78N
hence, the magnitude of the normal force on the book is 25.78N
The above formula should be applied
An electron has an initial velocity to the south but is observed to curve upward as the result of a magnetic field. This magnetic field must have a component:___________
a) north
b) upwards
c) downwards
d) east
e) west
Answer:
e) west
Explanation:
According to Lorentz left hand rule, the left hand is used to represent the motion of an electron in a magnetic field. Hold out the left hand with the fingers held out parallel to the palm, and the thumb held at right angle to the other fingers. If the thumb represents the motion of the electron though the field, and the other fingers represent the direction of the field, then the palm will push in the direction of the force on the particle.
In this case, if we point the thumb to the south (towards your body), with the palm facing up, then the fingers will point west.
37 microgram to Gigagram
3.7e-1437 Gigagram
BRAINILIEST PLEASE
Use the relationship shown in
Figure 18 to predict the travel time when
speed is 110 km/h.
The time taken to travel when the speed is 110 km / h is 2.7 hours to cover a distance of 300 km.
We know that,
v = d / t
where,
v = Velocity
d = Distance
t = Time
From the given graph,
At t = 6 hrs, the time taken is 50 km / h
d = 6 * 50
d = 300 km
So this graph represents the time it takes to cover 300 km at different speeds.
At v = 110 km / h
t = 300 / 110
t = 2.7 hrs
The given graph is an example of inverse relationship. An inverse relationship is a hyperbolic relationship in which one variable is the inverse of other variable.
Therefore, the time taken is 2.7 hrs.
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As part of a safety investigation, two 1300 kg cars traveling at 17 m/s are crashed into different barriers. Find the average forces exerted on:
a. the car that hits a line of water barrels and takes 1.5 s to stop
b. the car that hits a concrete barrier and takes 0.10 s to stop.
Answer:
a. F = 14,733.33 N
b. F = 221,000 N
Explanation:
Given;
mass of the cars, m = 1300 kg
velocity of the cars, v = 17 m/s
time taken for the first car to stop after hitting a barrier, t = 1.5 s
time taken for the second car to stop after hitting a barrier, t = 0.1 s
The average forces exerted on each car is calculated as follows;
a. the car that hits a line of water barrels and takes 1.5 s to stop
\(F = ma = m\times \frac{v}{t} = 1300 \times \frac{17}{1.5} = 14,733.33 \ N\\\\F = 14,733.33 \ N\)
b. the car that hits a concrete barrier and takes 0.10 s to stop
\(F = ma = m\times \frac{v}{t}= 1300 \times \frac{17}{0.1} = 221,000 \ N\\\\F = 221,000 \ N\)
A frying pan is connected to a 1500 volt circuit. If the resistance of the frying pan is 25 ohms, how many amperes does the frying pan draw?
The current (in amperes) the frying pan draws from the 500 volt circuit, given that it has a resistance of 25 ohms is 60 amperes
How do i determine the current drawn by the frying pan?From the question given above, the following data were obtained:
Voltage of circuit (V) = 1500 V Resistance of frying pan (R) = 5 Ω Current (I) =?The current drawn by the frying pan can be obtained as follow:
Voltage (V) = Current (I) × resistance (R)
Inputting the given parameters, we have:
1500 = Current × 25
Divide both sides by 25
Current = 1500 / 25
Current = 60 amperes
Thus, from the above calculation we can conclude that the current drawn by the frying pan is 60 amperes
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Please see the attached image
The moment of inertia of the flat square is MA²/6
What is moment of inertia?The moment of inertia of a body is a property of the body which shows its ability to ritate about an axis.
What is the moment of inertia of the flat square?To find the moment of inertia of the flat square through its center of mass, we know that the moment of inertia of a rectangular slab is given by
I = M(a² + b²)/12 where
M = mass of slab and a and b = side lengthsNow, for a flat square a = b. so,its moment of inertia is I = M(a² + b²)/12
I = M(a² + a²)/12
= 2Ma²/12
= Ma²/6
Now for the given flat square, we have that
its mass equals M and its length equals A.So, substituting these into the equation of moment of inertia for the flat square, we have that
The moment of inertia of the flat square is given by
I = Ma²/6
I = MA²/6
So, moment of inertia is MA²/6
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where were the first psychology laboratory established?
Answer:
it was established in USA, Johns Hopkins University.
Answer:
The 1st psychology lab in the U.S.A. was established in 1883 at Johns Hopkins University by G. Stanley Hall
how atoms are in one mole of patassuim
Answer:
There are 6.022 × 10²³ atoms of potassium in every mole of potassium.
an athlete runs some distance before taking a long jump, why?
Answer:
To gain momentum before the jump is made
A 1.50x103-kilogram car is traveling east at 30 meters per second.
The brakes are applied and the car is brought to rest in 9.00 seconds.
A. Calculate the magnitude of the total impulse applied to the car to
bring it to rest. [Show all work, including the equation and
substitution with units.]
B. State the direction of the impulse applied to the car. [East or
West?]
PLEASE HELP!!!!
Answer:
\(39000\ \text{kg m/s}\)
West
Explanation:
m = Mass of car = \(1.3\times 10^{3}\ \text{kg}\)
t = Time = 9 seconds
u = Initial velocity = 30 m/s
v = Final velocity = 0
Impulse is given by
\(J=m(v-u)\\\Rightarrow J=1.3\times 10^3(0-30)\\\Rightarrow J=-39000\ \text{kg m/s}\)
The magnitude of the total impulse applied to the car to bring it to rest is \(39000\ \text{kg m/s}\).
The direction is towards west as the sign is negative.
an electron and a proton are placed close to each other. what is the direction of the electric field due to these charges at some point a great distance from them
A force perpendicular to the electric field will be felt by the proton, and an opposing force will be felt by the electron.
What takes place when an electron and a proton are placed adjacent to one another?
However, a proton and an electron are drawn to one another. Another way to describe it is that similar or "like" charges repel one another, whereas opposite charges attract one another. Because opposing charges are attracted to one another, the negatively charged electrons are drawn to the positively charged protons.
How are electrons created?
a microscopic, negatively charged component found in every atom. Electron streams generated by specialist equipment can be utilized in radiation therapy.
What exactly is a proton?
Each atom's nucleus contains a proton, a subatomic particle. The particle possesses a positive electrical charge that is opposite and equal to that of the electron.
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What is the biggest agent of erosion?
a tornadoes
b pollution
c gravity
d water
Answer:
D - Water
Explanation:
A 100 kg gymnast comes to a stop after tumbling. Her feet do 5,000 J of work to stop her.
Which of the following was the girl's velocity when she began to stop?
Answer:10 m/s
Explanation:
A 100 kg gymnast comes to a stop after tumbling. Her feet do 5,000 J of work to stop her. The girl's velocity when she began to stop is 10 m/sec.
What is velocity?When an item is moving, its velocity is the rate at which its direction is changing as seen from a certain point of view and as measured by a specific unit of time. Velocity is vector quantity.
Uniform motion an object is said to have uniform motion when object cover equal distance in equal interval of time within exact fixed direction. For a body in uniform motion, the magnitude of its velocity remains constant over time. Here in the question velocity is changing by using work energy theorem we have,
work done = change in kinetic energy
5000 = (.5).m.v² , where v is velocity.
5000 = (.5).100.v²
v = 10 m/sec
A 100 kg gymnast comes to a stop after tumbling. Her feet do 5,000 J of work to stop her. The girl's velocity when she began to stop is 10 m/sec.
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An artillery shell is fired at a target 200 m above the ground. When the shell is 100 m in the air, it has a speed of 100 m/s. What is its speed when it hits its target?
The speed of the artillery shell when it hits its target is 100 m/s.
Given:
Initial vertical displacement (y) = 200 m
Vertical displacement at 100 m in the air (y') = 100 m
Final velocity in the vertical direction (vy') = 0 m/s (at the highest point of the trajectory)
Using the equation for vertical displacement in projectile motion:
y' = vy^2 / (2g),
where g is the acceleration due to gravity (approximately 9.8 m/s^2), we can solve for the initial vertical velocity (vy).
100 m = vy^2 / (2 * 9.8 m/s^2),
vy^2 = 100 m * 2 * 9.8 m/s^2,
vy^2 = 1960 m^2/s^2,
vy = sqrt(1960) m/s,
vy ≈ 44.27 m/s.
Now, since the horizontal motion is independent of the vertical motion, the horizontal speed of the shell remains constant throughout its trajectory. Therefore, the speed of the shell when it hits its target is 100 m/s.
Hence, the speed of the artillery shell when it hits its target is 100 m/s.
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An object whose weight is 100 lbf experiences a decrease in kinetic energy of 500 ft lbf and an increase in potential energy of 1500 ft lbf. The initial velocity and elevation of the object, each relative to the surface of the earth, are 40 ft/s and 30 ft, respectively. If g 5 32.2 ft/s2 , determine:
(a) the final velocity, in ft/s.
(b) the final elevation, in ft.
Answer:
a) \(v_2=35.60ft/sec\)
b) \(h_2=45ft\)
Explanation:
From the question we are told that:
Weight \(W=100lbf\)
Decrease in kinetic energy \(dK.E= 500 ft lbf\)
Increase in potential energy \(dP.E =1500 ft lbf.\)
Velocity \(V_1=40\)
Elevation \(h=30ft\)
\(g=32.2 ft/s2\)
a)
Generally the equation for Change in Kinetic Energy is mathematically given by
\(dK.E=\frac{1}{2}m(v_1^2-v_2^2)\)
\(500=\frac{1}{2}*\frac{100}{32.2}(v_1^2-v_2^2)\)
\(v_2=35.60ft/sec\)
b)
Generally the equation for Change in Potential Energy is mathematically given by
\(dP.E=mg(h_2-h_1)\)
\(1500=mg(h_2-h_1)\)
\(h_2=45ft\)
A submarine has a 'crush depth" (that is, the depth at which water pressure will crush the submarine) of 100 m. What is the approximate pressure (water plus atmospheric) at this depth? (Recall that the density of seawater is 1025 kg/m³, g = 9.81 m/s², and 1 kg/(m•s²) = 1 Pa = 9.8692 x 10-⁶ atm.)
A) 10.9 atm
B) 9.9atm
C)37.9atm
D)25.9atm
Answer:
25.9atm
Explanation:
Answer: my grandfather was a marine so he kept me in check
25.8 atm
Explanation:
Total pressure is:
P = Patm + ρgh
where Patm is the atmosphere pressure,
ρ is the fluid density,
g is acceleration due to gravity,
and h is the depth of the fluid.
P = (1 atm) + (1025 kg/m³) (9.81 m/s²) (250 m) (9.8692×10⁻⁶ atm/Pa)
P = 1 atm + 24.8 atm
P = 25.8 atm
Electrons are ____________ charged particles. Answer here
Answer:
negatively charged
Explanation:
Answer: electrons are negative charged
Explanation:
PLEASE Which list places the three types of radiation in order from the one that is
most difficult to block to the one that is easiest to block?
A. Gamma, alpha, beta
B. Alpha, beta, gamma
C. Alpha, gamma, beta
D. Gamma, beta, alpha
Answer:
D
Explanation:
Gamma, beta, alpha
If right, please mark me brainliest
The types of radiation from the most difficult to easiest to block is Gamma, beta, alpha.
What is radiation and explain its types?The energy from the source that travel with the speed of light to the space is known radiation. There are three types of radiation:
they are:
Alpha particlesBeta particlesGamma raysAlpha particles is a particle which consists of 2 proton and 2 neutron.
The alpha particles can easy to block.
eg: Helium nucleus
Beta particles is a ray or radiation that emits electron and positron during the process of beta decay.
Gamma rays is a radiation which is the penetration of electromagnetic radiations during radioactive decay. These radiations were very difficult to block.
So, Option D is the correct answer.
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An object traveling at a constant speed exhibits which of the following:
Net force of 0N.
Acceleration is 0m/s/s
Speed of 0m/s.
None of the above
When an object is traveling at a constant speed, the acceleration is 0 m/s².
What is constant speed?If an object covers an equal amount of distance in equal interval of time, then the body is said to be moving at a constant speed.
F - ff = ma
where;
F is the applied forcem is mass of the objecta is acceleration of the objectDuring constant speed, acceleration = 0
Thus, when an object is traveling at a constant speed, the acceleration is 0 m/s².
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Quastion and answer about Accrate and precise
Accuracy refers to how close a measurement is to the true or accepted value. Precision refers to how close measurements of the same item are to each other.
Precision and accuracy are two indices of observational error. Precision is how near a collection of measurements is to its true value, whereas accuracy is how close the measurements are to one other. Precision, in other terms, is a description of random errors and a measure of statistical variability.
If you weigh a body weighing 20 kg and obtain 17.4,17,17.3, and 17.1, your weighing scale is exact but not particularly accurate. If your scale returns values of 19.8, 20.5, 21.0, and 19.6, it is more accurate but not particularly precise.
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How do concrete walls minimize the effects of natural phenomena on structures?
They allow the structure to move slightly with natural phenomena but remain solid. They can resist compression forces caused by earthquakes.
They can only protect the walls in the basement of a house.
They create a strong roof so it can’t be damaged in any natural phenomena.
The concrete walls' strength, stability, and resistance to water and fire damage can help to reduce the effects of natural phenomena on buildings.
What is a concrete wall's benefit?Concrete home construction gives a wall structure that is more durable than steel and wood. Concrete walls do not deteriorate when exposed to moisture from wind-driven rain, diffusion, or airflow. Contrary to steel, concrete does not rust when exposed to moisture. Termites are resistant to concrete barriers.
How resilient are structures to natural disasters?Powerful building materials like steel and concrete support the home's façade, and ceilings made of western red cedar temper the industrial style inside. These constructions are resistant to natural calamities since they are constructed of sandbags, barbed wire, and soil.
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A 10 kg box is on an inclined plane that is 40 degrees above the horizontal. It is sliding
down with a constant velocity.
a. Draw a free body diagram with Fg, FN, F₂ and Ff.
b. What is the weight of the box?
What is the normal force of the box?
c. What is the force of friction acting on the box?
d. What is the net force acting on the box?
A horizontal force of 10.0 N is acting on a 10 kg box that is sliding to the right along the floor with velocity v.
What are the assumptions for drawing a free-body diagram?Most people make the common assumptions of rigid body action and ignoring air resistance and friction. In statics, all forces and moments must balance to zero; if they don't, the body is accelerating and the laws of statics do not apply, according to the physical interpretation.
The specific situation and the presumptions used will determine how many forces and moments are displayed. Most people make the common assumptions of rigid body action and ignoring air resistance and friction.
In statics, all forces and moments must balance to zero; if they don't, the body is accelerating and the laws of statics do not apply, according to the physical interpretation. The resultant forces and moments in dynamics can have non-zero values.
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mr wang works in a recycling center recyclable materials arrive at the center mixed together workers use magnets separate steel cans from other items which two statements are true about the force between a steel can and a magnet
The force between the magnet and the can is the noncontact force. The attraction between the magnet and the can is a pull. Therefore, option B and C are correct.
What is a magnet?A magnet can be described as a material that produces a magnetic field and this magnetic field is responsible for the properties of a magnet. The properties magnet is such a force that pulls ferromagnetic materials, such as steel, iron, cobalt, etc., towards it.
A permanent magnet can be described as an object made of a material that can be magnetized and creates its own magnetic field. These type of materials are strongly attracted to a magnet, is known as ferromagnetic, and consist of the elements iron, nickel, and cobalt.
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Your question was incomplete, most probably the complete question was,
Mr. wang works in a recycling center recyclable materials arrive at the center mixed together workers use magnets to separate steel cans from other items which two statements are true about the force between a steel can and a magnet:
A) Gravity pushes the can toward the magnet.
B) The force between the magnet and the can is the noncontact force.
C) The attraction between the magnet and the can is a pull
D) The attraction between the magnet and the can is a push.
A car accelerates uniformly from rest and
reaches a speed of 28.8 m/s in 5.7 s. The
diameter of a tire is 50.6 cm.
Find the number of revolutions the tire
makes during this motion, assuming no slipping.
A cyclist bikes with an average velocity of 20 m/s for 5 seconds.
What is the magnitude of the cyclist's displacement?
Your answer should have one significant figure.
Explanation:
v = s/t
20 = s/5
100 = s
s = 100 = 1 × 10².
When a cyclist bikes with an average velocity of 20 m/s for 5 seconds, the magnitude of the cyclist displacement would be 1×10² meters.
What is Velocity?
The total displacement covered by any object per unit of time is known as velocity. It depends on the magnitude as well as the direction of the moving object. The unit of velocity is meter/second. It can also be represented by the infinitesimal rate of change of displacement with respect to time. The generally considered unit for velocity is a meter per second.
The mathematical expression for velocity is given by the formula
velocity= total displacement/Total time
The area under the velocity-time graph represents the total displacement covered by the object while the slope of the velocity time graph represents the acceleration of the object.
For the given problem when a cyclist bikes with an average velocity of 20 m/s for 5 seconds,
Displacement =velocity×time
=20×5
=1×10²
The magnitude of the cyclist's displacement is 1×10²
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Which is considered computer storage
The options are application Hard drive input and software
Answer:
Second Option
Explanation:
The "hard drive" or the second option is one of the main components of storing information on a computer. You already have a hard drive built into your computer, or laptop when you buy it, and you can buy additional hard drives in the form of plugins that can store even more data if your original hard drive becomes full of data.
Hope this helps.
Answer:
B
Explanation:
Whereas memory refers to the location of short-term data, storage is the component of your computer that allows you to store and access data on a long-term basis. Usually, storage comes in the form of a solid-state drive or a hard drive.
how many males are color blind one in 50 1 and 10 one hundred one and 12
One in twelve males have color blindness whereas One in two-hundred females have color blindness. Thus, Option D is correct.
Color blindness is the ability to distinguish different colors. It is hard to differentiate the colors between the same color family. A person with color blindness can not able to see red and green, and can able to see grey, black, and white. It is often inherited.
A person with color blindness can not able to differentiate the colors between red and green. There are three types of color blindness they are Deuteranomaly (difficulty with red-green color blindness and it makes green look redder), Protanomaly(red look greener), Protanopia, and deuteranopia (difficulty in identifying red and green). It is cured by using proper contact lenses.
Thus, One in twelve males has color blindness. Hence, the ideal solution is option D.
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An ideal transformer has 50 turns in the primary and 500 turns in the secondary. An input of 12 V will produce an output ofA) 12 V.B) 120 V.C) 1200 V.D) none of the above.
On an ideal transformer, the ratio between the number of turns in the primary and the secondary is the same as the ratio between the input and output voltage:
\(\frac{N_{\text{ in}}}{N_{\text{out}}}=\frac{V_{\text{ in}}}{V_{\text{out}}}\)Since the secondary has 10 times more turns than the primary, then the output voltage must be 10 times greater than the input voltage.
Therefore, the answer is:
\(120V\)Around ___ percent of children and ___ percent of adolescents currently experience a major depressive disorder. As many as ____ percent of adolescents experience at least one depressive episode during their teen years.
2; 8; 20
Around 2 percent of children and 8 percent of adolescents currently experience a major depressive disorder. As many as 20 percent of adolescents experience at least one depressive episode during their teen years.
Why most of the adolescents experience depressive disorder?Depressive disorders are common among adolescents and adults, with approximately 1 in 5 adults in the United States experiencing a depressive disorder in any given year. This prevalence is even higher among adolescents, with approximately 1 in 8 teens experiencing some form of depression.The causes of depressive disorders are often complex and vary from person to person, but there are some common risk factors that may contribute to the development of depression. These include genetic predisposition, family history of mental health issues, adverse childhood experiences, trauma, physical or emotional abuse, substance abuse, chronic medical conditions, and certain medications. Social isolation, lack of meaningful relationships, and limited access to mental health care can increase the risk of depression. Additionally, adolescents and adults may experience depression due to changes in their life, such as a move to a new city, the end of a relationship, or the loss of a job.The symptoms of depression vary from person to person, but often include persistent sadness, loss of interest in activities, difficulty sleeping, changes in appetite, fatigue.To learn more about depression refer to:
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