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A meter stick of mass 0.25 kg is mounted on a perpendicular axis at the 20 cm mark. A force of 3 N is applied at the 80cm mark. This force is perpendicular to both the ruler and the axis. Determine the angular acceleration of the ruler.
The Hall voltage across a conductor in a 42mT magnetic field is 1.9mu V. When used with the equal current in a different magnetic field, the voltage across the conductor is 2.7mu V.
A dog sits 1.53-m from the center of a merry-go-round with an angular speed of 1.65 rad/s. If the magnitude of the force that maintains the dog's circular motion is 38-N, what is the dog's mass.
a what is the strength of the electric field 4.0 cm from a small glass bead that has been charged to 8.0 nc?b what is
When jumping straight down, you can be seriously injured if you land stiff-legged. In a stiff-legged landing he comes to a halt in 2.5 ms. Find the average net force that acts on him during this time
Compressed air is used to fire a 60 ball vertically upward from a 1.1--tall tube. The air exerts an upward force of 2.2 on the ball as long as it is in the tube. How high does the ball go above the top of the tube? Express your answer to two signific..
You are given a wooden rod 70 cm long and asked to drill a small diameter hole in it so that when pivoted about the the hole the period of the pendulum will be a minimum. How far from the center should you drill the hole
The intensity of radiation from a distant source like the Sunvaries inversely with the square of the distance from thesource. At the top of Earth's atmosphere the solar intensity(power per unit area) is 1.35 kW/m2.
A doubly charged helium atom whose mass is 6.6 10-27 kg is accelerated by a voltage of 2500 V. What is its period of revolution
A generator at Hoover Dam can supply 396 MW of electrical power. Find the rate with which falling water must supply energy to the turbine
A sky diver jumps out of a plane and falls freely for 7.8 seconds before opening the parachute. What is the sky diver's speed when the parachute opens
A fast tortoise runs with a speed of 10.0 cm/s and a hare runs 20.0 times faster. They start a race together but the hare stops to rest for 2.00 minutes. What distance did the hare cover
If we imagine an electron as orbiting the proton, with the orbit of radius 5 x 10 ^-11 m, what is the total energy of the atom
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