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Q. A vertical spring (spring constant = 119 N/m) is mounted on the floor. A 0.390-kg block is placed on top of the spring and pushed down to start it oscillating in simple harmonic motion. The block is not attached to the spring.
Q. A 13 g bullet traveling 219 m/s penetrates a 2.0 kg block of wood and emerges cleanly at 158 m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?
A 47 kg skier starts from rest at height H = 19 m above the end of a ski-jump ramp as shown. as theskier leaves the ramp, his velocity makes an angle theta= 29 above the horizontal. neglect air resistance and friction. calculate the speed of the s..
An airplane is flying with the velocity of 85.0 m/s at an angle of 20.0 degrees above the horizontal. When the plane is a distance 107 m directly above the dog that is standing on level ground, a suitcase drops out of the luggage compartment. How far..
Suppose you were performing the same experiment on this crate but were doing it on the moon instead, where the acceleration due to gravity is 1.62 m/s squared. What magnitude push would cause it to move? What will be its acceleration if you maintaine..
What is the size of the smallest vertical plane mirror in which a 10 tall giraffe standing erect can see her full-length image? (Hint: Locate the image by drawing a number of rays from giraffe's body that reflect off the mirror and go to her eye.
A street lamp weight 164N. It is supported equally by two wires that form an angle of 129 degrees with each other. What is the tension of each of these wires.
Find the energy, in joules, of one quantum of energy for an atomic oscillator in a block of aluminium.
Dan is gliding on his skateboard at 4 m/s. He suddenly jumps backward off the skateboard, kicking the skateboard forward at 6 m/s (as measured by an observer on the ground). Dan's mass is 50 kg and the skateboard's mass is 7 kg. How fast is Dan going..
As part of a safety investigation, two 1900 cars traveling at 23 are crashed into different barriers. Find the average forces exerted on (a) car that hits a line of water barrels and takes 1.5 to stop, and (b) car that hits a concrete barrier and ta..
How fast is the roller coaster moving at the top of the loop
Calculate the shear stress of the crude oil at the walls, and plotting the velocity distribution graph for the same.
What is direction of the velocity of the canoe
Assume a constant upward slope of 32; calculate the horizontal and vertical components of the acceleration of a truck that slowed from 140 to rest in 7.3.
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