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A mass of 2kg rests on a horizontal table and is attached to one end of a spring constant 200N/m. The other end of the sping is moved in the horizontal direction according to x = a cos(wt) where a = 4 x 10^-3m and w = 5pi rad/s. The damping constant b = 4.0 N/m s. Determine the amplitude and relative phase of the steady state oscillations of the mass.
A variable-speed drill, initially turning at 250 rpm, speeds up to 1300 rpm in a time interval of 0.1 s. What is its average rotational acceleration
A 9 m, 260-N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.5, and the ladder makes a 50° angle with the ground. How far up the ladder can an 800-N person climb before the ladd..
which describes an electric field vector and an electric field line? the vector has no certain orientation to the field
A volleyball is spiked so that its incoming velocity of +4.2 m/s is changed to an outgoing velocity of -24 m/s. What impulse does the player apply to the ball
A satellite orbits a planet of unknown mass in a circle of radius 2.0*10^7m?The magnitude of the gravitational force on the satellite from the planet is 74 N. What is the kinetic energy of the satellite in this orbit
A laboratory technician drops a 0.0840-kg sample of unknown material, at a temperature of 100.0°C, into a calorimeter. Compute the specific heat capacity of the sample
Conisder the Earths magnetic field (53 uT) at a point near the equator where the field is horizontal, Calculate the velocity, V of this proton
The tension in a string is 15 N and its linear density is0.085 kg/m. What is the speed and wavelength of the wave
An electron moves at a speed of 15000 m/s in a circular path of radius 2.2 cm. Find the strength of the magnetic field inside the solieod
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 1.00 m3 container of air absorbs 6098 J of heat at a constant pressure of 1.00 atm. Find the increase in the air's internal energy
a racing dog is initially running at 10.0 m/s, but is slowing down. By what fraction has its kinetic energy been reduced when its speed has been reduced by half
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