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A bowling ball of mass m and radius R is released so that at the instant it touches the floor it is moving horizontally with a speed v0 and is not rotating. It slides a distance s1 in time t1 before it begins to roll without slipping. If μk is the coefficient of kinetic friction between the ball and the floor, find s1, t1 and the final speed of the ball, v1. What is the ratio of the final kinetic energy to the initial kinetic energy of the ball?
The Earth has a surface temperature around 270 K and an emissivity of 0.8, while space has a temperature of around 2 K. If the Earth is in thermal equilibrium, how much power must the Earth absorb from the Sun
For tests using a ballistocardiograph, a patient lies on a horizontal platform that is supported on jets of air. Because of the air jets, the friction impeding the horizontal motion of the platform is negligible. determine the recoil velocity
Write an expression for the sinusoid in given Figure. - What are the phase angle and time shift of the waveform?
A proton in the upper atmosphere moves at 8.6×105m/s , perpendicular to Earth's magnetic field, Find the curvature radius of the proton's trajectory
A steel cable is to support an elevator whose total (loaded) mass is not to exceed 3100 kg. calculate the diameter of cable required
A bicyclist climbs a 2.0km long hill that makes an angle of 7.0° with the horizontal. The total weight of the bike and rider is 750N. How much work is done on the bike and rider by gravity? (The answer given in the textbook is: -180kJ) I'm having tro..
An AC generator rotating at 60 Hz in a 300 Gauss field has 1000 turns and produces an rms voltage of 150 volts, What is the area of each turn in the coil
the work being performed in this lab serves to solidify our understanding of how a magnetic field around a ring behaves
If a Space Station is in a circular orbit 630 km above thesurface, what is its orbital velocity in metres per second
A 15.0 kg box initially sits at the bottom of a frictionless ramp. It is pulled by a cable to the top of the ramp, which is 2.5 m higher than the bottom of the ramp, and brought to a stop. How much work does each force acting on the box do durin..
A jet lands comes in for a landing on an aircraft carrier with an initial landing speed of 152 mi/h. What is the acceleration (assumed constant) if it stops in 2.2 s due to an arresting cable that snags the jet and brings it to a stop
A train 450 m long is moving on a straight track with a speed of 82.1 km/h. determine how long the train blocked the crossing
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