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A 20.0kg rock slides on a rough horizontal surface at 5.50 m/s and eventually stops due to friction. The coefficient of kinetic friction between the rock and the surface is 0.300.
What average thermal power (Watts) is produced as the rock stops?
A converging lens (f = 14.6 cm) is located 31.4 cm to the left of a diverging lens (f = -7.91 cm), Find the overall magnification
Jack and Jim are resting on an offshore raft after a swim. They estimate that the horizontal distance between a trough, Calculate how fast the waves are moving
How do you establish the value of theta
In a physics laboratory experiment, a coil with 200 turns enclosing an area of 12.0 cm^2 is rotated from a position where its plane is perpendicular to the earth's magnetic field to one where its plane is parallel to field.
A flat uniform circular disk (radius = 2.40 m, mass = 1.00 x 10^2 kg) is initially stationary. The disk is free to rotate in the horizontal plane about a frictionless axis perpendicular to the center of the disk. A 45.0 kg person, standing 0.95 m fro..
You are studying standing sound waves in an organ pipe of length L with both ends open, What is the frequency of the musical tone produced by the organ pipe in the situation described in part b
A satellite with mass 2200kg is initially in a circular orbit a distance 325km above the earth's surface. Due to air drag, the satellite's altitude decreases to 250km. Calculate the change in gravitational potential energy
Particle A of mass M and speed v moving to the right, strikes particle B of mass 3M that is moving to the left at speed v5.0. find the velocity of the center of mass of the two particles before the collision
An insulating rod of length 14.0 cm is bent into the shape of a semicircle and has a uniform total charge of -7.5 uC, Calculate the magnitude and direction of the electric field at the center of the semicircle arc
Suppose your weight has been constant, but then - after being introduced to really good chocolate - you start eating 100 extra food calories (recall, 1 food calorie is really 1kcal or 1000 calories of energy) every day without otherwise adjusting ..
A jet engine emits sound uniformly in all directions, radiating an acoustic power of 3.89 × 102 kW, calculate the corresponding sound intensity level
A proton (mass 1.67 × 10 ?27kg) is moving at 1.15 ×10 ?6m/s directly toward a stationary helium nucleus (mass 6.64 × 10 ?27kg). After a head-on elastic collision, what is the helium's velocity
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