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Q. A 15 kg box slides d = 4m down the frictionless ramp, afterwards collides with a spring whose spring constant is 160N/m. The angle of the ramp is 30 degrees. What is the maximal compression of spring?
Q. In coming to a stop, a car leaves skid marks 77m long on the highway. Assuming a deceleration of 8m/s2, estimate the speed of the car just before braking.
A butterfly at eye level is 26 cm in front of a plane mirror. You are behind the butterfly, 48 cm from the mirror. What is the distance between your eye and the image of butterfly in the mirror.
Find out the angle that the total acceleration of the car. the car at the moment the car completes the circle.
The sound produced by the loudspeaker has a frequency of 12002 Hz and arrives at the microphone via two different paths. The sound travels through the left tube LXM that has a fixed length.
However, the current increases by just 0.11 A when R1 is removed, leaving R2 connected across the battery. Find (a) R1 and (b) R2.
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..
A helicopter is ascending vertically with a speed of 4.50 m/s. At a height of 195 m above the Earth, a package is dropped from a window. How much time does it take for the package to reach the ground.
A plastic ball in a liquid is acted upon by its weight and by a buoyant force. The weight of the ball is 4.8N. The buoyant force has a magnitude of 6.5N and acts vertically upward. External force acting on the ball maintains it in the state of res..
A 73 trampoline artist jumps vertically upward from the top of a platform with a speed of 4.0. If the trampoline behaves like a spring of spring constant 6.2×104, how far does he depress it.
A 116 kg chesterfield is pushed up a frictionless ramp at the constant speed by a delivery person. If the ramp is inclined at 25.80° to horizontal. What is the magnitude of the normal force that is exerted on the chesterfield by the ramp.
Two cars with equal mass collide head on. One car is going 18 mph. That car is push backward about 38 feet. What is the speed of other vehicle.
A weather vane at first at rest has a moment of inertia of 0.111 kg • m2 about its axis of rotation. A 53.0 g piece of clay is thrown at the vane and sticks to it at a point 19.5 cm from the axis. The initial velocity of the clay is 20.0 m/s, directe..
A civil engineer wishes to plan a curved exit ramp for a highway in a way that a car will not have to rely on friction to round the curve without skidding. In the other words, a car moving at the designated speed can negotiate the curve even while th..
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