please help with these 4 questions on a level surface at different constant veloci-ties. Within the same time interval, greater force65. The work done in raising an object must result66. Two cars having different weights are traveling63. A person does 100 joules of work in pullingback the string of a bow. What is the initialspeed of a 0.5-kilogram arrow when it is firedfrom the bow?in an increase in the object's(1) internal energy(2) kinetic energy(3) gravitational potential energy(4) elastic potential energy(1) 20 m/s(2) 50 m/s(3) 200 m/s(4) 400 m/s64. An 8.0-kilogram object and a 4.0-kilogramobject are released simultaneously from a heightof 50. meters above the ground. After fallingfreely for 2.0 seconds, the objects have different(3) kinetic energies(4) displacements(1) accelerations(2) speedsis always required to stop the car that has hegreater(1) weight(2) kinetic energy(3) velocity(4) momentum

Answered: Image /qna-images/answer/73e42d3b-20a6-4c48-b112-48f12ac89a0f.jpg

Answered: please help with these 4 questions

Science

Physics

please help with these 4 questions

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter8: Potential Energy And Conservation Of Energy

Section: Chapter Questions

Problem 35P: Ignoring details associated with friction, extra forces exerted by arm and leg muscles, and other...

See similar textbooks

Related questions

Q: Explain why the balloon moved in that way? What is the charge of balloon? clothes? and wall? What is...

A: Charge is a physical property of matter particles that results in the attraction and repulsion of pa...

Q: OPart 2: Torque on a wire loop Shown below-left is a square wire loop (the length of each side is L)...

A: Answer is Lever for side 12= 0 Lever for side 23 = L /2 Lever for side 34 =0 Lever for side 41 = L/...

Q: Explain in short description 1. Resistivity, 2. Conductivity, and 3. Electrical Conductivity.

A: Electrical conductivity and conductivity are the same thing; they both describe a material's ability...

Q: A small asteroid strikes the surface of Mars and causes a rock to fly upward with a velocity of 26 m...

A: We have given initial speed =26m/s Angle of projection =52° Displacement in vertical y=12m We hav...

Q: 1. Consider the motion graph shown below. (SIG FIGS ARE NOT NECESSARY HERE) [East] -2- -1- v (m/s) t...

Q: Set the total energy of the system equal to 0 and derive an expression for the speed the electron mu...

A: 1st Given: Total energy=0 K=12mv2where, m=mass of particlev= velocity of particleU=kq1q2rwhere,q1 an...

Q: • An engine pumps water through a hose pipe. Water passes through the pipe and leaves it with a velo...

A: Given Velocity of water, V = 2 m/s Mass per unit length = M/L = 100 kg /m The power of engine is ...

Q: The figure shows a block of mass m1 on a horizontal, frictionless surface and a hanging block of mas...

Q: In your own words, Make a reflection about knife vs handgun, and what distance should you keep when ...

A: The 21-foot rule has long been used by police officers. Essentially, it says that when an assailant ...

Q: Assuming that the field of view is flat, what is the resultant vector (yellow line) of an observer p...

Q: Why don't you feel a gravitational force from the text book you're reading?

A: according to newton law if gravitation every object exerts gravitational force on the other object ...

Q: Determine equivalent resistance

A: Given data : Resistance=R1 Resistance=R2 Resistance=R3 Required : Equivalent resistance

Q: 1. Compute for W1 to pull he block up 2. Compute for W1 to keep the block in position 3. If the surf...

Q: In the diagram below, each resistor has a resistance of 10 2 & the battery is 27 V. Determine I. R1 ...

A: Given data: Three resistors are connected in series R1 = R2 = R3 = 10 Ω Battery voltage (V) = 27 V ...

Q: 1 kg of coffee, originally at 95°C, is placed into a .3 kg aluminum cup. After some time, you pour 0...

Q: A car accelerates from rest at 7.55 m/s2 for 4.25 s. Determine the final velocity of the car.

Q: ira car accelerates from rest at 2 meters per second per second, its speed 3 seconds later will be o...

A: Given data : Initial velocity=U Acceleration=a Time=t To find : Speed after 3 sec

Q: A person rides a Ferris wheel that turns with constant angular velocity. Her weight is 544.0 N. At t...

Q: If the radius is 6.3 cm and the charge 1S 4.1 µC, how much work was done in charging the sphere? The...

A: The given data The radius of the sphere R = 6.3 cm = 0.063 m The charge is q = 4.1μC = 4.1×10-6 C ...

Q: Part C Compact fluorescent bulbs are much more efficient at producing light than are ordinary incand...

Q: A high fountain of water is located at the center of a circular pool as shown in the figure below. N...

Q: Transverse waves are sent along a 5.00-m long string with a speed of 30.0 m/s. The string is under a...

A: speed of transverse wave is given by v=Tμ= Tm/L -------(1) where T = tension on the string m...

Q: Why does the SI Measurement System use “kilogram” instead of “gram” as the base unit of mass?

A: Here, we have to answer , why is kilogram used instead of gram as the base unit of mass. Let's see h...

Q: Two particle of mass m, = 1.0 g and m, = 2.0 g had a head-on collision and after collision the two m...

A: Given that:- m1=1 gm2=2 gv1=3i^-2j^ m/sv2=4j^-6k^ m/sv=velocity after collision=?

Q: Two balls, A and B, collided together. Ball A has a mass of 0.6 lbs and an initial velocity of 2.25 ...

Q: A metal is heated up to a temperature of 500 degrees. It is then exposed to a temperature of 38 degr...

A: According to Newton's law of cooling:- T=T0+(Ti-T0)e-kt where, T=Temp. at any time 't'.T0=Surroundin...

Q: Figure 2 shows the field produced by two point charges +q and -q of equal magnitude but opposite sig...

A: This question is based on Gauss law. The gauss law states that the net electric flux through a close...

Q: In the following diagram a block is placed on an inclined plane. The mass of the block is 10.0 kg ar...

Q: Homework #5 1) A ball is thrown at 14.0 m/s at 45° above the horizontal. Someone located 30.0 m away...

Q: A train 350 m long is moving on a straight track with a speed of 80.1 km/h. The engineer applies the...

A: Given Length of train, L = 350 m Initial speed, Vi = 80.1 km /h = 22.25 m/s Final speed, Vf = 18....

Q: 1. Determine the X and Y components of each of the forces shown. F- 390 12 30 P-300 T-400 Ib

Q: solve using both polygon method and component method. a worm crawls 32 cm in a northerly direction,...

Q: Two cannonballs are dropped from a second floor physics lab at height h above the ground. Ball A has...

Q: Find acceleration

A: Given data : Initial velocity=U Final velocity=V Time=t Required : Acceleration

Q: A 2 kg frame is hung in a ceiling as shown. Find the tensions T1 and T2 in the rope. 30° T1 40° T2 2...

Q: Problem An explorer in Antarctica leaves his shelter during a whiteout. He takes 50 m northeast, nex...

Q: A car is moving with a velocity of 12 m/s [E]. It makes a turn over 8.0 s so that the velocity is 15...

Q: A point charge q = +3.0 mC is surrounded by an imaginary sphere of radius r = 0.20 m centered on th...

Q: We have a car, which mass is 1250 kg, and the diameter of the wheels is 60 cm. Initially, the car mo...

Q: ON A CERTAIN DESERT LAND, A HORSE IS RUNNING AT A SPEED OF 60 MPH. HOW FAR BACK OF A STOP WAGON SHOU...

A: Given that:- Speed of horse=60mph

Q: A m=10.0 kg solid block made of plastic with a coefficient of linear expansion a = 420 x 10-6 K-1 an...

A: Givenm=10.0 kgα=420×10-6 k-1ρ25°C=1200 kg/m3ρW=1000 kg/m3g=9.80 m/s2

Q: Force 4 N Displacement%31 m Work done

A: Given , Force (F) = 4N Displacement(d) = 1m

Q: diffraction and interference

A: Interference is a phenomenon in which two or more waves pass through to form the resulting wave of l...

Q: A barge is pulled down a canal by a horse walking beside the canal. if the angle of the rope is 60.0...

Q: A 1.0-kg object moving 9.0 m/s collides object moving 6.0 m/s in a direction that is perpendicular t...

Q: We have a car, which mass is 1250 kg, and diameter of the wheels are 60 cm. Initially the car moves ...

Q: A.Charges and Electrostatic Charging 1. If a charged particle attracts a nearby object, must that ob...

Q: 9- At what speed must a ball be thrown upwards to reach a maximum height of 25m?

A: Given data: Maximum height (h) = 25 m Final velocity (Vf) = 0 m/s Required: Initial velocity (Vi)

Q: Compute for the acceleration due to gravity for each height, percentage error obtained for each meas...

A: Write the free fall formula for height as below. h=12gt2 Here, h is height, g is the acceleration du...

Q: Soba shot an arrow directly up in the air with a velocity of 30.0 m/s. Disregarding air resistance, ...

Concept explainers

Speed of light

The speed at which the light travels in a vacuum is unbiased for both the source and inertial frame of reference of the observer. This was postulated by the physicist, Albert Einstein, by observing the theory of electromagnetism of Maxwell. Also, there was no evidence for the luminiferous aether, that is, the medium for the propagation of light where the electromagnetic field exists.

Question

please help with these 4 questions

on a level surface at different constant veloci-
ties. Within the same time interval, greater force
65. The work done in raising an object must result
66. Two cars having different weights are traveling
63. A person does 100 joules of work in pulling
back the string of a bow. What is the initial
speed of a 0.5-kilogram arrow when it is fired
from the bow?
in an increase in the object's
(1) internal energy
(2) kinetic energy
(3) gravitational potential energy
(4) elastic potential energy
(1) 20 m/s
(2) 50 m/s
(3) 200 m/s
(4) 400 m/s
64. An 8.0-kilogram object and a 4.0-kilogram
object are released simultaneously from a height
of 50. meters above the ground. After falling
freely for 2.0 seconds, the objects have different
(3) kinetic energies
(4) displacements
(1) accelerations
(2) speeds
is always required to stop the car that has he
greater
(1) weight
(2) kinetic energy
(3) velocity
(4) momentum

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

A particle of mass 2.0 kg moves under the influence of the force F(x)=(3/x)N. If its speed at x=2.0 m is v=6.0 m/s, what is its speed at x = 7.0 m?
When jogging at 13 km/h on a level surface, a 70-kg man uses energy at a rate of approximately 850 W. Using the facts that the “human engine” is approximately 25 efficient, determine the rate at which this man uses energy when jogging up a 5.0 slope at this same speed. Assume that the frictional retarding force is the same in both cases.
The force exerted by a diving board is conservative, provided the internal friction is negligible. Assuming friction is negligible, describe changes in the potential energy of a diving board as a swimmer drives from it, starting just before the swimmer steps on the board until just after his feet leave it.
Check Your Understanding What potential energy U(x) can you substitute in Equation 8.13 that will result in motion with constant velocity of 2 m/s for a particle of mass 1 kg and mechanical energy 1 J?
Suppose you are jogging at constant velocity. Are you doing any work on the environment and vice versa?
Energy is conventionally measured in Calories as well as in joules. One Calorie in nutrition is 1 kilocalorie, which we define in Chapter 11 as 1 kcal = 4 186 J. Metabolizing 1 gram of fat can release 9.00 kcal. A student decides to try to lose weight by exercising. She plans to run up and down the stairs in a football stadium as fast as she can and as many times as necessary. Is this in itself a practical way to lose weight? To evaluate the program, suppose she runs up a flight of 80 steps, each 0.150 m high, in 65.0 s. For simplicity, ignore the energy she uses in coming down (which is small). Assume that a typical efficiency for human muscles is 20.0%. This means that when your body converts 100 J from metabolizing fat, 20 J goes into doing mechanical work (here, climbing stairs). The remainder goes into internal energy. Assume the students mass is 50.0 kg. (a) How many times must she run the flight of stairs to lose 1 pound of fat? (b) What is her average power output, in watts and in horsepower, as she is running up the stairs?
Using energy considerations, calculate the average force a 60.0-kg sprinter exerts backward on the track to accelerate from 2.00 to 8.00 m/s in a distance of 25.0 m, if he encounters a headwind that exerts an average force of 30.0 N against him.
Suppose a car travels 108 km at a speed of 30.0 m/s, and uses 2.0 gal of gasoline. Only 30 of the gasoline goes into useful work by the force that keeps the car moving at constant speed despite friction. (The energy content of gasoline is about 140 Mi/gal.) (a) What is the magnitude of the force exerted to keep the car moving at constant speed? (b) If the required force is directly proportional to speed, how many gallons will be used to drive 108 km at a speed of 28.0 m/s?
A typical automobile engine has an efficiency of 25 . Suppose that the engine of a 1000-kg automobile has a maximum power output of 140 hp. What is the maximum grade that the automobile can climb at 50 km/h if the frictional retarding force on it is 300 N?
A particle of mass 2.0 kg moves under the influence of the force F(x)=(5x2=7x)N. If its speed at x=4.0 m is v=20.0 m/s, what is its speed at x=4.0m ?
Suppose you throw a ball upward and catch it when it returns at the same height. How much work does the gravitational force do on the ball over its entire trip?
An electron in a television tube is accelerated uniformly from rest to a speed of 8.4107 m/s over a distance of 2.5 cm. What is the power delivered to the electron at the instant that its displacement is 1.0 cm?