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A race car starts from rest on a circular track of radius 274 m. The cars speed increases at the constant rate of 0.560 m/s^2. At the point where the magnitudes of the centripetal and tangential accelerations are equal, find the following.
(a) the speed of the race car.
(b) the distance traveled.
(c) the elapsed time.
an electron is traveling near a current-carrying wire. the electron is moving along the x axis with the velocity along
A 0.800 kg block is attached to a spring with spring constant 14 N/m. While the block is sitting at rest, What is the amplitude of the subsequent oscillations
Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward, What is the total time the blue car is moving, What is the acceleration of the yellow car
Air bags are designed to deploy in 10 ms. Estimate the acceleration of the front surface of the bags as it expands. Express your answer in terms of the acceleration of gravity g
The length of a spring increases by6.9cm from its relaxed length when a mass of1.7kg is hanging in equilibrium from the spring. How much elastic potential energy is stored in the spring
In exercising, a weight lifter loses 0.123 kg of water through evaporation, the heat required to evaporate the water coming from the weight lifter's body. find the change in the internal energy of the weight lifter
A top has a moment of inertia of 2.69×10−4 kg· m2 and is initially at rest. It is free to rotate about a perpendicular stationary axis. A string around a peg along the axis of the top is pulled, maintaining a constant tension of 3.78 N in the string.
holding these two strips togeather they will repel each other. assume the average lencth 10cm of the tapes is half
A uniform beam of negligible weight is supported by a cable. The beam is pivoted at the bottom and a 2000-N object hangs from its top. Find the magnitude of the tension T in the cable.
Suppose the ball leaves the pitcher's hand by velocity of 15 m/sec directed horizontally. Take the point of throw to be 2m above ground. Where does the ball hit the ground?
an astronaut is performing a space walk outside the international space station. the total mass of the astronaut with
Two stationary positive point charges, charge 1 of magnitude 3.45 nC and charge 2 of magnitude 1.50 nC, are separated by a distance of 52 cm. An electron is released from rest at the point midway between the two charges, and it moves along the lin..
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