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A 3.5 kg block is released from a compressed spring whose spring constant is 640N/m. After leaving the spring at the spring’s relaxed length, the block travels over a horizontal surface by a coefficient of friction of 0.25, for distance of 7.8mcoming to rest. How far was the spring compressed?
You have a 1.93-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 particle with a charge of q = -5.60 nC is moving in a uniform magnetic field of B= (-1.23 T) z. Calculate the x component of the velocity of the particle
A police officer is investigating the scene of an accident where two cars collided at an intersection. One car with a mass of 1015 kg moving west had collided with a 1300-kg car moving north. The two cars, stuck together, skid at an angle of 30° n..
Two batteries in parallel, each of emf 10 V and internal resistance 0.5 ?, are connected to an external 20 ? resistor. Find the current in the external resistor.
An oil drop carries one excess electron and weighs 9.2 10-15 N. What electric field strength is necessary to suspend drop so it is motionless.
You are traveling on an airplane. The velocity of the plane with respect to the air is 130 m/s due east. What is the Velocity with respect to the ground
In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 21 m/s at an angle of 31 degrees above the horizontal
Two resistors have resistances R(smaller) and R(larger), where R(smaller)
a force of 63.1 n is required to start a 7.0-kg box moving across a horizontal concrete floor. what is the coefficient
A man stands on the roof of a building of height 13.6m and throws a rock with a velocity of magnitude 31.8m/s at an angle of 31.6 degrees above the horizontal. compute the maximum height above the roof reached by the rock
Taipei 101 (a 101-story building in Taiwan) is sited in an area that is prone to earthquakes and typhoons, What is the period of oscillation of the building
An electron has an initial velocity of 4.9 • 106 m/s in a uniform 1.9 • 105 N/C strength electric field. How far does the electron travel before coming into rest in m
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