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Question: A 13 g toy car moving to the right at 21 cm/s has a head-on nearly elastic collision with a 21 g toy car moving in the opposite direction at 33 cm/s. After colliding, the 13 g car moves with a velocity of 46 cm/s to the left. Find the speed of the second car after the collision.
A 2.00 meter long horizontal plank whose mass is 3.00 kg is placed so that the very end (the right end) rests on a retaining wall. The left end is put on the tailgate of the truck. However the tailgate is tilted a bit, so it only contacts the boar..
A particle of mass 4.47 × 10?27 kg, moving at 9.46 × 105 m/s, strikes an identical particle which is initially at rest. What are the final speeds of the particles
You are the design engineer in charge of the crashworthiness of new automobile models. What is the average force acting on the car by the inner barrier
A child in a sled glides along on a flat, snowy surface towards a snowy incline of angle 35.0o with respect to the horizontal. Her speed at a distance 17.5 m from the incline is 24.8 m/s. How far up the hill would she slide
An object is acted on by a single nonzero force of magnitude F. Is it possible for the object to have zero angular acceleration? a. Yes or b. No
A certain kind of glass has an index of refraction of 1.650for blue light of wavelength 430nm and an index of 1.615 for redlight of wavelength 680 nm. what is the angle between the two beams inside the glass
Two waves traveling in opposite directions along a string fixed at both ends create a standing wave described by y(x, t) = 0.01 sin(44x)cos(1090t). The string has a linear mass density of 0.01 kg/m, and the tension in the string is supplied by a m..
Contrast the sidereal and solar days. How, and by roughly how much, would the length of the solar day change if Earth's rotation were suddenly to reverse direction?
A 600 turn solenoid is 15cm long. the current in it is 35A. a3.0cm long straight wire cuts through the center of the solenoid,along the diameter. the wires carries a 23A current downward. Whatis the magnitude of the force on this wire assuming the so..
A student makes a voltage divider from a 45-V battery, a 475-k\Omega (475 x 103\Omega) resistor, and a 235-k\Omega resistor. The output is gauged across the smaller resistor. What is the voltage?
A 19.6cm diameter coil consists of 40 turns of circular copper wire 1.7mm in diameter. estimate the current in the loop
A train siren indicating that the stationary train is ready to leave the station has a frequency of 80 Hz. What frequency is perceived by the occupant of a car traveling away from the train at 30 m/s? The speed of sound in air is 343 m/s.
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