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A driver involved in an accident claims he was going only 42 MPH. When police tested his car, they found that when his brakes were applied at 42 MPH, the car skidded 160 feet before coming to a stop. However, the driver's skid marks at the accident scene measured 210 feet. Assuming the same constant deceleration, determine the speed he was actually travelling just prior to the accident?
A closely wound coil has a radius of 6.30 cm and carries a current of 1.70 A. How many turns must it have if, at a point on the coil axis 6.30 cm from the center of the coil
An archaeologist found a fragment bone of animal. It has an activity per gram of carbon that is 25% that of an equivalent sample of carbon from a similar living animal
Four point charges, q, are fixed to the four corners of a square that is 11.2 cm on a side. An electron is suspended above a point at which its weight is balanced by the electrostatic force due to the four point charges, at a distance of 11 nm abo..
A newly discovered planet has a mean radius of 2020 km. A vehicle on the planet\'s surface is moving in the same direction as the planet\'s rotation, what is the period of the planet\'s rotation
A 3.0 kg block of aluminum isheated from 20°C to 90°C at atmospheric pressure. Find the work done by the aluminum
A 118 g cube of ice at 0°C isdropped into 1.0 kg of water that was originally at 84°C. What is the final temperature of the water after the ice has melted
A .4 kg ball has a velocity of 25 m/s, what is the kinetic energy of the ball & how much work would be required to stop the ball
Two charged dust particles exert a force of 4.30×10-2 N on each other. What would be the force if they are moved so they are only one-sixth as far apart.
You have a 2.01-m-long stretched string with a mass of 19.5 g. When you oscillate the string at 440 Hz, Calculate the tension in the string
A simple pendulum is made from a 0.691-m-long string and a small ball attached to its free end. how much time elapses before it attains its greatest speed
Radius of rotation of the hanging mass in apparatus in lab M20a is set to 10.0 cm. Determine the centripetal force and suspended mass
A 71-kg skier is going down a slope oriented 32° above the horizontal. Determine the pressure that each skier exerts on the snow
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