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The electric potential energy stored in the capacitor of a defibrillator is 68 J, What is the potential difference across the capacitor plates
The inner and outer surfaces of a cell membrane carry a negative and positive charge, respectively. What is the magnitude of the electric field in the membrane
a basball pitcher pitches with a horizontal velocity of 80mph(36m/s) the horizonatal distance from the point of release to home plate is 59ft. what is the intantous linear velocity of the sweet spot
In a television picture tube, electrons strike the screen after being accelerated from rest through a potential difference of 32000 V. find the electron speed just before the electron strikes the scr
The physical therapist Is examining a rehab patient right knee in preparation for fitting them a knee brace. What is the name of the anatomical plane in which this flexion/extension motion occurs
You have been given 4.4584807 g of copper from which you are to fashion a wire whose resistance is 1.2941073 ohms. What will the diameter of the wire be that you fashion
while unloading furniture, a worker slides a heavy box down the ramp on the rope. find the mass of the box
A ball with a mass of 0.65 kg is dropped on a table. The initial height of the ball is 0.85 meters. Calculate the change in the momentum of the ball during its collision with the table
A 83.0 kg fullback is running at 3.86 m/s to the east and is stopped in 0.760 s by a head-on tackle by a tackler running due west. Calculate the impulse exerted on the fullback.
If 1 mol of oxygen is heated at a constant pressure of 1 atm from 10 C to 25 C. What is the change of volume of the gas in this process
A 0.420 kg ice puck, moving east with a speed of 3.12 m/s, has a head-on collision with a 0.890 kg puck initially at rest. Assuming a perfectly elastic collision, What is the speed of the heavier pu
A golf ball of mass 0.047 kg is hit off the tee at a speed of 40.2 m/s. The golf club was in contact with the ball for 3.29E-3 s. Find the impulse imparted to the golf ball
A pulsar is an extremely dense neutron star which is a highly magnetized. As it rotates it emits a beam of electromagnetic radiation which can sweep across the earth at very regular intervals. by wh
A listener increases his distance from a sound source by a factor of 3.62. what is the change in the sound intensity level in dB
A neutral conductor contains a hollow cavity in which there is a +100 nC point charge. A charged rod then transfers ??50 nC to the conductor. what is the charge on the inner wall of the cavity wall
A horse drags a 100 kg sled a distance of 4 km in 20 minutes. What is the coefficient of sliding friction between the sled and the ground
A disk of mass M and radius R is initially at rest. It is acted upon by a constant torque N for a time t. what was the minumum power rating of the motor
My home is exactly 5.9 km from Spartan Stadium, where the football team has just scored another touchdown. What is the temperature(in degree Celsius) of the air
Transverse waves with a speed of 48.7 m/s are to be produced on a stretched string. What is the required tension in the string
A harmonic wave in a wire has amplitude 7.07 mm, wavelength 2.61 m, and frequency 254 Hz. What is the propagation speed of the wave
A simple pendulum has a period of 3.74 s. The acceleration of gravity is 9.8 m/s^2 What is its length? What would its period be on the Moon
A 237 g mass is connected to a light spring of force constant 3 N/m that is free to oscillate on a horizontal, frictionless track. What is the maximum acceleration of the mass
A hoop and a disk, both of 0.70- m radius and 5.0- kg mass, are released from the top of an inclined plane 3.0 m high and 8.2 m long. What is the speed of the hoop
A 65.5 kg firefighter slides down a pole while a constant frictional force of 300 N retards her motion. Find the maximum distance the spring is compressed
A string is wrapped tightly around the circumference of a wheel with a mass of 1.23 kg and a radius of 0.324 m. What is the moment of inertia of the wheel