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a 100g marble (modeled as a solid sphere with radius 2cm) rolls without slipping down a ramp. It starts from rest and its speed is 1m/s at the bottom of the ramp. How tall is the ramp?
A hunter aims directly at a target (on the same level) 160 m away, If the bullet leaves the gun at a speed of 260 m/s, by how much will it miss the target
the snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57. Find out the acceleration of the sled and child.
In a crash test, a 1100 kg car slams into a concrete wall at 17.1 m/s and comes to rest in 0.275 s. a)Find out the magnitude of the impulse delivered to the car.b) Find the average stopping force.
What is the range of frequency of the light emitted by the hydrogen atom
What is the magnitude of the normal force exerted by the car.
The displacement vectors 44.5 cm at 15.0° and 23.0 cm at 51.0° both start from the origin and form two sides of a parallelogram. Find the area of the parallelogram
Two friends hold on to a rope, one at each end, on a smooth, frictionless ice surface. What is the magnitude of the angular momentum of the system comprised of the two friends
Suppose that the separation between two speakers A and B is 3.20 m and the speakers are vibrating in-phase. They are playing identical 121-Hz tones and the speed of sound is 343 m/s. An observer is seated at a position directly facing speaker B in..
er beam with wavelength ? = 6328 Å is incident normal to the plane of a diffraction grating. find the distance between the two first-order maxima in the pattern
A child and sled with the combined mass of 60.4 kg slide down a frictionless hill. If the sled starts from rest and has a speed of 13.4 m/s at the bottom, what is the height of the hill.
Given that the diameter of the moon is 3,480 km, and using a meter stick or tape measure plus a 25¢ coin, estimate the distance, D, from the Earth to the Moon
A stamp collector uses a lens with 7.5-cm focal length as a simple magnifier. The virtual image is produced at the normal near point (25 cm). What is the expected angular magnification
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