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Question1
Two bicycle tires are set rolling with the same initial speed of 4.00m/s along a long, straight road, and distance each travels before its speed is reduced by half is measured. One tire is magnified to a pressure of 40 psi and goes the distance of 18.1m; other is at 105 psi and goes the distance of 92.4m. suppose that a net horizontal force is due to rolling friction only and take a free fall acceleration to be g = 9.80m/s2
Question2
Jean camps by a wide river and wonders how wide it is. She spots large rock on the bank directly across from her. She next walks upstream until she judges that an angle between her and the rock, that she can still see clearly, is now at an angle of 30 degrees downstream. Jean measures her stride to be about one yard long. Distance back to her camp is 120 strides, about how far across, both in yards and in meters, is river?
How much energy was released in an explosion
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A dockworker applies a constant horizontal force of 84.0\({\rm N}\) to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves a distance 12.5\({\rm m}\) in a time 4.80\({\rm s}\)
Introductory Mechanics: Calculate the smallest coefficient of static friction
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A resistor is in the shape of a cube, with each side of resistance R . Find the equivalent resistance between any two of its adjacent corners.
A sphere of radius R is uniformly charged to a total charge of Q. It is made to spin about an axis that passes through its center with an angular speed ω. Find the magnitude of the resulting magnetic field at the center of the sphere.
Find out the minimum horizontal velocity magnitude of the acceleration of the blocks
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Discover the magnetic field on the z axis What happens if the block is immersed in carbon disulfide
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Determine the simple harmonic motion of the spring what ac velocity is ball moving
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