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A car moving with an initial speed v collides by a second lighter stationary car that is 41.7% as massive. After the collision, the two cars stick together and move off in the same direction as before. Compute the final speed of the two cars after the collision. Give your answer in units of the initial speed (i.e. as a fraction of v)
A vertical straight wire carrying an upward 40-A current exerts an attractive force per unit length of 8.8*10-4 N/m on a second parallel wire 5.0cm away. What current (direction and magnitude) flows in the second wire?
A series RCL circuit contains a 47.0 ohm resistor, a 2.00 microF capacitor, a 4.00 mH inductor, and a generator with a frequency of 2550 Hz and Emax of 60V. what is the average power dissipated by the resistor
A capacitor consists of square conducting 21cm on a side and 4.5mm apart, carrying +- 1.0 uC. Find the electric field between the plates
Two equally charged particles are held 3.9 x 10-3 m apart and then released from rest. Determine the mass of the second particle
A hardworking ant must supply 0.00805 N to pull a small piece of fruit at constant velocity over a distance of 9.60 cm up a small hill to the entrance of the colony. calculate the work done by the ant by pulling the piece of fruit up the hill
A woman stands between a vertical mirror 0.80 m tall and a distant tree whose height is H. She is 2.85 m from the mirror, and the tree is 11.0 m from the mirror. How tall is the tree
An object with a mass of m = 5.5 kg is attached to the free end of a light string wrapped around a reel of radius R = 0.275 m and mass of M = 3.00 kg. compute the magnitude of the acceleration of the object
Two firecrackers explode at the same place in a laboratory and are separated by a time of 3 years as measured on the laboratory clock. What is the spatial distance between these two events in a rocket frame in which the events are separated in time..
A cubical box with sides of length a#consists of five metal plates which are welded together and grounded, Find the potential everywhere inside the box
If the rms speed of the molecules of a quantity of helium at temperature 142 K is the same as the rms speed of neon atoms at a second temperature
A submarine is 300. m horizontally out from the shore and 100m. beneath the surface of the water. How long does it take for the laser bream to reach the building
A Carnot heat engine is to be designed with an efficiency of 81%. what is the temperature of the "hot" reservoir
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