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A 238-kg sleigh is pulled by one horse at constant velocity for 0.78 km on a snowy, horizontal surface; the coefficient of kinetic friction between the sleigh runners and snow is 0.32. What power must the horse deliver to the sleigh for the trip to take 12 min?
in the experiment you will study an oscillator called a torsion pendulum. in this case the restoring force is the
Water flowing through a garden hose of diameter 2.71 centimeter fills a 25.0 L bucket in 1.50 minute. Obtain the speed of the water leaving end of the hose
We are going to heat up some water. We start with 10 kg of ice at T = -20° C. How much heat did we need to add to the system
Is the total translational kinetic energy of the molecules in the ball higher, lower or the same as when the ball was at rest?
They drive directly toward a tornado warning siren at 27.0 m/s. The siren emits sound at 685 Hz. What frequency of sound do the students hear?
a what is the probability that an electron will tunnel through a 0.50-nm air gap from a metal to a scanning tunneling
a toy car of mass 3.0 kg is stationary and a child rolls a truck of mass 3.5kg straight toward it with a speed of 7.0
A Hall-effect probe to measure magnetic field strengths needs to be calibrated in a known magnetic field. Determine the strength of this magnetic field
A long, straight, thin-walled cylindrical shell of radius R carries a current I parallel to the central axis of the shell. Discover the magnetic field (including direction) both inside and outside the shell.
A very thin sheet of plastic (n=1.60) covers one slit of adouble-slit apparatus illuminated by 640-nm light, What is the (minimum) thickness of the plastic
An autographed baseball rolls off a 0.64m high desk and strikes the floor 0.61 m away from the desk. How fast was it rolling on the desk before it fell off? The acceleration of gravity is 9.80 m/s^2.
An particle with a charge value of 0.21 C is moving in the presence of an electric field of 5.5 N/C. What force does the particle experience
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