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A 108m long train starts from rest (at t=0) and accelerates uniformly. At the same time (at t=0), a car moving with constant speed in the same direction reaches the back end of the train. At t=12 s the car reaches the front of the train. However, the train continues to speed up and pulls ahead of the car. At t=32 s, the car is left behind the train. Determine
a) the car's speed
b) the train's acceleration.
The Hall effect can be used to determine the density of mobile electrons in a conductor. Find the density of mobile electrons in the material
Draw a free body diagram for each situation and find the magnitude of the larger of the two individual forces in units of N. Find out the magnitude of the smaller of the individual forces in units of N.
If the measured parallax shift of star A was 0.1 arcsecs and the parallax shift of star B was 0.05 arcsecs, What is the distance of the farthest star in light-years
A dockworker loading crates on a ship finds that a 18-kg crate, initially at rest on a horizontal surface, Find the coefficients of static and kinetic friction between crate and floor
a 4.0 kilogram cart moving to the right and a 6.0 kilogram cart moving to the left on a horizontal frictionless surface. find the magnitude of the total momentum of the two-cart system
A ball, initially at y = 0, is thrown straight down and takes 1.40 s to move 13.8 m in the - y direction. Calculate the initial velocity of the ball
A 73 kg parachutist descends during a vertical height of 420 m with constant speed. Find the increase in entropy produced by the parachutist; assume the air temperature is 21°C.
High-altitude mountain climbers do not eat snow, but always melt it first with a stove. Calculate the energy absorbed from a climber's body if he eats 0.70kg of -15?C snow which his body warms to body temperature of 37?C
The prong of a tuning fork moves back and forth when it is set into vibration. what are the maximum velocity and the maximum acceleration of the prong
a circular loop of radius 1.00 m is placed in a magnetic field of magnitude of 0.500 T. find the magnetic moment of the loop
q1. a music fan at a swimming pool is listening to a radio on a diving platform. the radio is constant frequency when
A grandfather's clock is calibrated at a temperature of 20 C. The pendulum is a thin brass rod with a heavy mass attached to the end. On a hot day, when the temperature is 30 C, does the clock run fast or slow? How much time does it gain or lose i..
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