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A 800 kg car pushes a 2000 kg truck that has a dead battery. When the driver steps on the accelerator, the drive wheels of the car push against the ground with a force of 4100 N.
(a) What is the magnitude of the force of the car on the truck?
N
(b) What is the magnitude of the force of the truck on the car?
A wire is 3.500 m long. After applying a force to one end of the wire, it is now 3.504 m long. Calculate the tensile strain in the wire
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