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One swimmer in a relay race has a 0.49 s lead and is swimming at a constant speed of 3.97 meter per second. The swimmer has 57.7 meter to swim before reaching the end of the pool. A second swimmer moves in the similar direction as the leader. Determine what constant speed must the second swimmer have in order to catch up to the leader at the end of the pool?
A person looking out the window of a stationary train notices that raindrops are falling vertically down at a speed of 4.57 m/s relative to the ground. How fast is the train moving
Another way of looking at the fact that all objects have wave-like properties is diffraction. At what speed should the student be moving in order to have signficant diffraction as she enters the door
A spring is hung from the ceiling. A 0.600-kg block is then attached to the free end of the spring. Find the angular frequency of the block's vibrations
problem 1what atomic transition in singly ionized helium will produce a photon with the same energy as the smallest
A car with a mass of 950 kg is moving to the right with a constant speed of 1.69 m/s, What is the total force on the car if it is moving to the left
Capacitors C1 = 5.0 µF and C2 = 2.0µF are charged as a parallel combination across a250 V battery. Calculate the resulting charge on each capacitor
A person holds a 1.42-N baseball in his hand, a distance of 34.0cm from the elbow joint, Calculate the net torque acting on the forearm and hand
A communications satellite with a mass of 400kg is in a circular orbit about the Earth. Calculate the wieght of the satellite on the surface of the earth
A crate of eggs is located in the middle of the flat bed of a pickup truck as the truck negotiates an unbanked curve in the road. how fast can the truck be moving without the crate sliding
compass needle points 25 degrees E of N outdoors. However, as it is placed 17 cm to the east of a vertical wire inside a building it points 61 degrees E of N. What is the magnitude of the current in the wire? The earth field there is 0.50X10^-4 T ..
A student (m = 63kg) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a time of 0.040 s. From what height did the student fall
design a crane that will sit on a boat and drop a 1meter by 1 meter by 1 meter box to pick up 10cm steel balls. we need
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