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Problem: A 950-kg car traveling west at 15.0 m/s collides with a 750-kg car traveling north at 20.0 m/s. The cars stick together.
Part A: What is the speed of the wreckage just after the collision?
I need help to find the speed of the wreckage just after the collision.
What is the effective spring constant (that is, the ratio of force to change in length) of a copper cable that is 7.0 in diameter and 13 long?
A helicopter is ascending vertically with a speed of 5.4 m/s. At height of 105m above the earth a package is dropped from the helicopter. How much time does it take for the package to hit the ground
A small sphere with mass 1.20 hangs by a thread between two large parallel vertical plates 5apart. The plates are insulating and have uniform surface charge densities and. The charge on the sphere is = 8.80×10-6.
In Europe, a large circular walking track with a diameter of 0.900 km is marked in angular distances in radians. How many radians should he walk per day to maintain his daily routine
A 2000 kg car is slowed down uniformly from 21.0 m/s to 6.00 m/s in 5.60 s.
His arm is 70 cm long and has a mass of 4.0 kg. Illustrate what is the magnitude of the torque about his shoulder if he holds his arm straight out to his side, parallel to the floor?
A jeweler uses a draw plate to stretch a wire to three times its original length. Find by what factor does its resistance increase
in proton-beam therapy a high-energy beam of protons is fired at a tumor. the protons come to rest in the tumor
The sound a string guitar can be varied by changing the tension in each string. what are the wave's natural frequencies
A laser beam passes during a converging lens with a focal length of 10 cm. At what distance past the lens has the laser beams (a) intensity and (b) electric field strength increased with a factor of 4?
A golf ball is dropped from rest from a height of 9.50 m. It hits the pavement, then bounces back up, rising just 5.50 m before falling back down again. A boy then catches the ball when it is 1.30 m above the pavement. Ignoring air resistance, cal..
Hydraulics is used on many cars for operating brakes. The normal force among the brake pads and rotor needs to be 1500Newtons, and your pump can supply a pressure of 225 PSI. What is the diameter of the cylinder/piston (in cm.)?
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