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a tennis ball is fired from a gun that us mounted on the floor. the tennis ball has an initial speed Vo= 25.0m/s and is launched at an angel if 0o=35degree above horizontal. You are standing 57meters Away from the gun.
A) at what time do you catch the tennis ball ( assume that t=0 when the ball is fired).
B) what is the height of the ball above ground when it reaches your racket?
C) what is the speed of the tennis ball when it reaches your racket?
Suppose a patient having an MRI is immersed in a 3.0 T field along the axis of his body. He then quickly tips his head to the side, toward his right shoulder, tipping his head by 30 degrees in the rather short time of 0.15 s.
A "door closer" is attached to the door and the top of the door frame.When the door is open and at rest, the door closer exerts a torque of 4.8 {rm N} cdot {rm m}. What is the least force that you need to apply to the door to hold it open.
For a common emitter amplifer, current gain is 70. If the emitter current is 8.8mA, Calculate the collector and base current. Also calculate current gain
Consider a nonconducting rod that would make a great wire except for the fact that it is nonconducting, Find the electric field strength at a point on the axis of the rod
A diver, below the surface of a lake, notices that no light appears to be coming toward her greater than the angle è, what is the angle è
A rod of length 30.0 cm has linear density (mass per length) given by l 5 50.0 1 20.0x, What is the mass of the rod
A lottery machine uses blowing air to keep 2000 Ping-Pong balls bouncing around inside a 1.0m X 1.0m X1.0m box. What is the mean free path between collisions
A container has a pressure of 4 atmospheres and is at the temperature of 200 degrees celsius, what is the average distance between molecules (assume container is a cube)
What focal length does the lens need. how many meters will the car have moved before it begins to slow down.
A 50 newton horizontal force pushes a 10 kg mass sitting on a horizontal surface. What is the acceleration of the mass
the distance between the object and the eyepiece of a compound microscope is 18 cm. what is the total magnification of the microscope
A dead tree is initially stationary and there is a 30.0-degree angle between the tree and the vertical, How fast is the top of the tree moving (in m/s) just before it hits the ground
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