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Question1
An artillery shell is fired with an initial velocity of 310 m/s at 57.0° above the horizontal. It explodes on a mountainside 39.0 s after firing. What is x and y coordinates of the shell where it explodes, relative to its firing point.
Question2
An airplane is flying with a velocity of 96.0 at an angle of 25.0 above the horizontal. While the plane is a distance 112 straight above a dog that is standing on level ground, a suitcase drops out of the luggage compartment. How far from the dog will the suitcase land? Air resistance can be ignored.
A man of mass 91 kg drops to a concrete patio from a window 0.63 m above the patio. What is the magnitude of the average stopping force exerted on him by the patio
A model rocket is launched straight upward. Its altitude y as a function of time is given by y = bt -ct2, where b = 82 m/s, c = 4.9 m/s2, t is the time in seconds, and y is in meters, (a) make use of differentiation to find out a general expressio..
Heat engines take input energy in the form of heat, use some of that energy to do work, What is the magnitude of the internal energy that the athlete uses in order to do 9.7x104 J of work
A NASA satellite has just observed an asteroid that is on a collision course with the Earth. With what speed will it hit the Earth's surface
A metal wire of resistance 2.20 multiply.gif 10-8 omegacap.gif is cut into four equal pieces that are then connected side by side to form a new wire the length of which is equal to one-fourth the original length
Starting from rest, a speedboat reaches a speed of 2.30 m/s in 1.2 s. What is the boat's speed after an additional 2.50 s has elapsed, assuming the boat's acceleration remains the same.
Water flowing through a garden hose of diameter 2.79 cm fills a 21.0-L bucket in 1.10 min. What is the speed of the water leaving the end of the hose
A spherical, conducting shell (inner radius = a and outer radius = b) has a charge +Q placed on it. What is the electric field everywhere
Just as you are about to step into a nice hot bath, a small earthquake rattles your bathroom. What is the speed of the waves that are reflecting back and forth inside the tub to create the standing wave
An asteroid orbits the Sun at a constant distance of 4.080e+11 meters. What is the orbital speed of the asteroid
A 120-V motor has mechanical power output of2.10hp. It is84.0%efficient in converting power that it takes in by electrical transmission into mechanical power. Find the current in the motor
One argument against Darwin's theory of evolution draws upon the second law of thermodynamics. Does this mean that organisms violate the Second Law of Thermodynamics
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