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A 2000 kg car moving east at 10.0 m/scollides with a 3000 kg car moving north. The cars stick togetherand move as a unit after the collision, at an angle of 36.0° north of east and at a speed of 4.94 m/s. Find the speed of the 3000 kg car before the collision.
an alpha particle nucleus of a helium atom consists of two protons and two neutrons and has a mass of 6.64x 10 -27 kg.
A 130 block on a frictionless table is firmly attached to one end of a spring with = 40. The other end of the spring is anchored to the wall. A 21 ball is thrown horizontally toward the block with a speed of 6.6.
A polar bear starts at the North Pole. It travels 1.0 km south, then 1.0 km east, then 1.0 km north, What was the bear's average speed
Assume that none of the alpha particles bounced back from the sheet, meaning that the alpha particles either were captured by the shielding or penetrated completely through the shielding.
Your car tire is rotating at 3.9 rev/s when suddenly you press down hard on the accelerator. What is the tires angular acceleration
A sonar device makes a soundwave in the air with a frequency of f1 = 61 Hz. What is the frequency of the sound wave created
a bullet of mass mb kg is moving with a speed of v ms when it collides with a rod of mass mr and length l m. the rod is
An outfielder throws a 0.150 kg baseball at a speed of 36.0 m/s and an initial angle of 30.0°. What is the kinetic energy of the ball at the highest point of its motion
Io, a satellite of Jupiter, has an orbital period of 1.77 days and an orbital radius of 4.22multiplied by105km. From these data, determine the mass of Jupiter
An airplane flying horizontally 3600 ft above the ground at 120mi/hh, drops relief aid on the ground. Resolve the angle between the vertical and the line joining plane and target at the instant when he package is released.
A 17g rifle bullet travelling 220 m/s buries itself in a 3.90 kg pendulum hanging on a 3m long string, which makes the pendulum swing upward in an arc. Find out the vertical and horizontal components of the pendulum's displacement.
A boy is on a Ferris wheel, which takes him in a vertical circle of radius 5.5 m once every 21.0 s. What is the angular speed of the Ferris wheel
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