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a 4.0 kg block slides along a frictionless surface with a constant speed of 5.0 m/s as shown. two seconds after it begins sliding, a horizontal, time- dependent force is applied to the mass. The force is removed eight seconds later. What is the speed of the Block at t = 11 seconds.
A small blob of putty of mass m = 90.0 g falls from the ceiling and lands on the outer rim of a turntable of radius R = 15.0 cm, find the postcollision angular speed of the turntable-putty
A spherically spreading EM wave comes from a 1200 W source. What is the rms value of the electric field
solid disk of radius 4.05 cm and angular velocity of 81.32 rad/s about an axis through its center perpendicular to its plane. How far (in cm) will the disk travel until it stops skidding
find the speed and direction of a proton passing through the origin and where the magnetic fields are: B1=1.0x10^-13 (j hat) T at (x,y,z)= (1,0,0) in mm, B2= -1x10^-13 (i hat) at (0,1,0) in mm
An object of mass M = 3.5 kg slides from rest a distance d = 6 m down a frictionless inclined plane where it encounters a spring. When the block just touches the spring, how much gravitational potential energy has it lost
A .4 kg ball has a velocity of 25 m/s, what is the kinetic energy of the ball & how much work would be required to stop the ball
Calculate the energy content of 1 kg of natural uranium assuming complete fission. Estimate an average energy per fission. Compare this to the energy in 1 kg of coal (reference all values assumed).
A standing wave is produced on a clothesline 8m long when five birds sit on the line. No birds sit on the end. What is the wave speed
q1. a heavy piece of hanging sculpture is suspended by a 146.0 cm long 8.03 gm wire. when the wind blows hard the wire
Determine the coefficient of kinetic friction between the block & the table.
As the police car approaches a brick wall it emits a sound at 800Hz. The speed of the car is 100km/h. Find the beat frequency recorded by the driver of the police car
A 7.5 nC charge is located 1.8m from a 4.2 nC charge. Find out the magnitude of the electrostatic force that one charge exerts on the other. Is the force attractive or repulsive.
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