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A 3000-kg truck runs into the rear of a 1000-kg car that wasstationary. The truck and car are locked together after thecollision and move with speed 9m/s.
What was the speed of the truck before the collision?
The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. Assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has..
Average Rate of Work The loaded cab of an elevator has a mass of 3.00 multiplied by 103 kg and moves 235 m up the shaft in 23s at constant speed. At what average rate does the force from the cable do work on cab.
A 1.4 kg block slides on a plane inclined at 37 degrees to the horizontal axis. The coefficient of friction between the plane and the block is .76. Find the acceleration of the two masses- the block and ball
What is the total contact force on the log by ropes 1 and 2 combined? (e) First give the magnitude of the N-S component of the combined contact forces of ropes 1 and 2. You have to decide for yourself if this combined component points North or Sou..
A washer is constructed from soft steel (density p = 7.9•10^3 kg/m^3). Its inside and outside dimensions are 2.00 cm and 3.30 cm, and it's thickness is 0.50 cm.
An electric fan is turned off, and its angular velocity decreases uniformly from 500 rev/min to 200 rev/min in a time interval of length 4.00 s. Find the number of revolutions made by the motor in the time interval of length 4.00s
H-F molecule has spring constant of 970 N/m. Assume that an H-F chemical laser, which lases betwee vibrational states of the H-F molecule, how many photons per seconde does it emit
An ideal gas initially at Pi, Vi, and Ti is taken through a cycle as shown in the figure below where n = 5. Find the net work done on the gas per cycle
Find out the velocity with which he strikes the water.
In a Hall-effect experiment, a current of 2.9 A sent lengthwise through a conductor 0.89 cm wide, 3.1 cm long,, find the drift speed (in m/s) of the charge carriers
Elements in the sixth representative group tend to (lose one, lose two, gain one, gain two) when they participate in the ionic bonding
Assume that you have two objects, one with a mass of 10 kg and the other with a mass of 18 kg, find the electric force that these objects exert on one another
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