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A boat whose speed in still water is 8 m/s, is directed across a river with a current of 6.0m/s. What is the speed of the boat as it crosses the river?
What is the wavelength of the waves on the string?
You witnessed a hit-and-run accident when you were driving a car at velocity u towards a radio station very far ahead on the street. Here is how it happened: you were listening to the radio when you \saw" a car driving towards you hit a person sta..
An automobile and a truck start from rest at the same instant, with the automobile initially at some distance behind the truck, What is the speed of the truck when they are abreast, How far was the automobile behind the truck initially
Sound with a frequency 650 HZ from a distant source passes through a doorway 1.10 m wide in a sound absorbing wall. Find the number and angular directions of the diffraction minima at listening positions along a line parallel to the wall.
A car crashes into a wall at 25 m/s and is brought to rest in 0.1s. Calculate the average force exerted on a 75-kg test dummy by the air bags
A single circular loop piece of copper wire has a radius (r) of 12 cm. What is the average electrical energy dissipated in the resistance of the wire
Six pendulums of mass and length are released from rest at the similar angle from vertical. Rank the pendulums according to the number of complete cycles of motion each pendulum goes through per minute.
Two pendula of equal length b and equal masses m connected by a spring of force constant k. Write the Lagrangian for the system, and use it to derive the equations of motion of the system
A parachutist leaves a stationary plane and free falls for 50.0 meters (ignore air resistance for the free fall). At what height did she leave the plane
If a person eats a popsicle of mass 0.045 kg and temperature -10 C, then how much energy does this person use
A 0.650 kg ice puck, moving west with a speed of 5.0 m per second, what will be the speed and direction of each puck after the collision
Determine the resolution limit set by diffraction . what average force do you need to apply to stop the sled? Utilize the concepts of impulse and momentum.
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