What is the change in potential energy

Assignment Help Physics
Reference no: EM1350128

Q. A person does 100 joules of work of pulling back the string of the bow. What will be the intial speed of a 0.5 killogram arrow when it's fired from the bow?

Q. A uniform electric field of magnitude 365 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 2.60 cm.

(a) What is the work done by the field on the electron?

(b) What is the change in potential energy associated with the electron?

(c) What is the velocity of the electron?

Write a Review

Sunlight shining in during daytime is absorbed by the floor

What mass of stone is necessary if the temperature is not to drop below 18.5°C overnight. Sunlight shining in during the daytime is absorbed by the floor, interior walls, and objects in the room, raising their temperature to 37.5°C.

How long does it take to catch the motorist

The two forces in each pair could have different physical origins (for instance, one of the forces could be due to gravity, and its pair force might be due to friction or electric charge).

What is the mass of each hailstone

Differences in analysing a roller coaster system as particle and rigid body, such as the assumption(s) made when treating the roller coaster as particle, parameters involved in kinematic and kinetic analysis.

Analyse the magnitude of the plane''s acceleration

An m=8.25 Kg mass is suspended on a string that is pulled upward by the force of F=83.3 N. If the upward velocity of the mass is 3.25 m/s right now, what is the velocity 5.50 s later.

The mirror of the nearest point on the floor

A person whose eyes are H = 1.64 m above the floor stands L = 2.3 m in front of a vertical plane mirror whose bottom edge is 38 cm above the floor. What is the horizontal distance x to the base of the wall supporting the mirror of the nearest point o..

Calculate the acceleration of the system

A 3.80 m-long, 430 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 66.0 kg construction worker stands at the far end of the beam. What is the magnitude of torque abou..

How to produce two high energy photons

A positron is a particle of "antimatter"; it has the same mass as an electron (9e-31 kg), but its charge is positive instead of negative. At research facilities such as Cornell Electron Positron Storage Ring at Cornell University in New York, high..

What is the potential difference measured by voltmeter

What is the potential difference measured by voltmeter

Find graphically magnitude and direction of resultant force

Find graphically magnitude and direction of resultant force

What will be the frequency of vibrations

A proton collides elastically with a stationary deuteron. If the proton is deflected by 37 degrees, what fraction of its kineti energy does it transfer to the deuteron.

What is the linear charge density along the arc

A solid block of mass m2 = 0.5 , at rest on a horizontal frictionless surface, is linked to a relaxed spring (with spring constant k = 150 whose other end is fixed. Another solid block of mass m1 = 2.4 and speed v1 = 2.2 collides with the 0.50 blo..

What was the ball''s initial speed

For instance, the flute can be described as an open-open pipe because a flutist covers the mouthpiece of flute only partially. Meanwhile, a clarinet can be described as an open-closed pipe as the mouthpiece of the clarinet is almost completely closed..