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A star rotates in a circular orbit about the center of its galaxy. The radius of the orbit is 1.5 x 1020 m, and the angular speed of the star is 3.7 x 10-15 rad/s. How long (in years) does it take for the star to make one revolution around the center?
We pass a laser beam through a double slit. On a screen 18.52 m away, we observe a series of bright lines which are 3.4 mm apart. What is the distance between the two slits
Mechanical advantage is the ratio of the force required without the use of a machine (sometimes very simple machine) to that needed when using the machine.
A cylindrical storage tank has a radius of 1.04 m. When filled to a height of 3.64 m, What is the density of the solvent
q1. diffraction also occurs with sound waves. consider 1900-hz sound waves diffracted by a door that is 87 cm wide.
A ten pound car wheel has a moment of inertia of 0.52 kg m2. How much torque is required to stop the wheel in 43.21 s?
Two sleds are hooked together in tandem . The front sled is is twice as massive as the rear sled. Determine the ratio of the magnitude of the two forces.
the speed at which the ball left the quarterback's hand.
A 4.0-m-long iron bar of uniform cross section is held perpendicular to the wall by a wire from the end of the bar to the wall, what is the magnitude of the vertical component of force produced by the wall
The planet Mercury takes only 88 Earth days to orbit the Sun. Assume the motion is uniform in a nearly circular orbit, with a radius of 5.79*10^10m. What is Mercury's tangential velocity
On a banked race track, the smallest circular path on which cars can move has a radius of 106 m, compute the largest speed at which cars can move on this track without relying on friction
A wooden raft has a mass of 81 kg. while empty it floats in water (density 1000 kg/m3) with 64% of its volume submerged. What mass of sand can be put on the raft without it sinking.
Calculate the limiting angle of resolution for the eye, assuming a pupil diameter of 1.95 mm, a wavelength of 530 nm in air
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