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A spring stretches by 0.0157 m when a 3.22-kg object is suspended from its end. How much mass should be attached to this spring so that its frequency of vibration is f = 6.43 Hz?
Plot the position, velocity, and acceleration of the plane throughout this time interval as a function of time, using initial position of the plane as the origin.
A driver measures her "cold" tire gauge pressure to be 2.02 105 Pa. The measurement is made before driving, Find the final temperature of the air in the tires
A proton, q=1.60 x 10^19C moves 10.0 cm on a path parallel to the direction of a uniform electric field of strength 3.0 N/C What is the change in electric potential energy
A mass (m) 100g is released from rest from 1.0m above the horizontal level. Find the vertical acceleration of the mass
q1. a flight attendant pulls her 70.0 n flight bag a distance of 274 m along a level airport floor at a constant speed.
A softball of mass 0.220 kg that is moving with a speed of 5.5 m/s (in the positive direction) collides head-on and elastically with another ball initially at rest. Calculate the velocity of the target ball after the collision
The coefficients of kinetic friction on the incline and the plane are negligible. What would be the velocity of the box right after the collision
A car traveling 53.9 km/h is 23.7 m from a barrier when the driver slams on the brakes. The car hits the barrier 2.57 s later. How fast is the car traveling at impact
A 55-kW radio station broadcasts its signal uniformly in all directions. What is the average intensity of its signal at a distance of 250 m from the antenna
A square loop of dimension a x a is moving at a speed v toward a straight wire carrying a current I. What is the induced emf of the loop as a function of the distance d between the wire and the nearest side of the loop
A speedboat moving at 35.0 m/s approaches a no-wake buoy marker 100 m ahead. How long does it take the boat to reach the buoy
q1. a solid cylindrical disk has a radius of 0.14 m. it is mounted to an axle that is perpendicular to the circular end
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