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A solid sphere is released from height h from the top of an incline making an angle θ with a horizontal. Calculate the speed of the sphere when it reaches the bottom of the incline
a) in the case that it rolls without slipping
b) in the case that it slides friction less without rolling
c) Compare the time intervals required to reach the bottom incises a and b.
An alert physics student stands beside the tracks as a train rolls slowly past. calculate the speed of the train
How long after the first strike does Wilma hears the sound. What is the time interval between successive sound pulses she hears.
A car travels around an unbanked highway curve (radius .15 km) at a constant speed of 25 m/s. What is the magnitude of the resultant force acting on the driver
A 50 kg child takes a ride on a roller coast . the coaster maintains a constant speed of15 m/s as it moves around a loop of radius 10m. what is the centrupetal acceleration of the child
Two protons are moving directly toward one another. When they arevery far apart, their initial speeds are 2.1 106 m/s. What is the distance of closest approach
snow is falling vertically at a constant speed of 6.5 ms. at what angle from the vertical do the snowflakes appear to
A two-stage rocket moves in space at a constant velocity of +4940 m/s. The two stages are then separated by a small explosive charge placed between them. Immediately after the explosion the velocity of the 1000-kg upper stage is +5930 m/s.
A 0.2 kg steel ball is dropped straight down onto a hard, horizontal floor and bounces straight up. FIND the magnitude of the impulse delivered to the floor by the steel ball
A pendulum consists of a sphere of mass 1.8 kg attached to a light cord of length 10.5 m, What is the tension of the cord at the lowest point
a what is the escape speed on a spherical asteroid whose radius is 510 km and whose gravitational acceleration at the
Ten boxes, each 22.0 cm high and weighing235 N, initially are all side by side onthe floor. The boxes are lifted and placed in a vertical stack2.20 m high in a time interval of5.50 s. Compute the power necessary to stack the boxes.
a 500 omh resistor and a real inductor with a pure inductance L and an internal resistance of r are in series with a generator with a voltage of V = 10.0V, What are the values of L and r
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