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The moon's diameter is 3.48 × 106 m, and its mean distance from the earth is 3.85 × 108 m. The moon is being photographed by a camera whose lens has a focal length of 60.0 mm.
(a) Find the diameter of the moon's image on the slide film.
(b) When the slide is projected onto a screen that is 18.2 m from the lens of the projector (f = 100.0 mm), what is the diameter of the moon's image on the screen?
A 1.70 kg block is released from rest and allowed to slide down a frictionless surface and into a spring. The far end of the spring is attached to a wall.
A ball falls straight down onto a wedge that is sitting on frictionless ice. The ball has a mass of 3.11kg, and the wedge has a mass of 5.39 kg. The ball is moving the speed of v = 4.45m/s when it strikes the wedge, which is initially at rest.
Determine magnitude of the force
Find out the tension in the rope
Water runs out of the horizontal drainpipe at the rate of 120 liters per minute. It falls 3.20 m to the ground. Assume the water doesn't splash up, what average force does it exert on the ground? (1 liter = 1 kg.)
A car travels at a constant speed around the circular track or a radius of 2.6 km. it goes around the track once in 360 seconds.
A column of soldiers, marching at 141 paces per minute, keep in step with the beat of a drummer at the head of the column, What is the approximate length of the column
A car is traveling north at 17.7m/s. After 12s its velocity is 14.10m/s in the same direction. Find the magnitude and direction of the car's average acceleration.
A 5.20 g pop up toy is compressed 1.50 cm and pops up to the height of 50 cm the spring constant is 270 Nm. What is the loss of energy.
A 5.00 X 10-2 kg mass with a charge of +0.75 mC is hung by a thin insulated thread. A charge of -0.9 mC is held 0.15 meters directly to right so that the thread makes an angle q with the vertical. What is the angle q and the tension in the string.
The mean (average) of their squares
what is the distance of closest approach of the two particles. explain two ways in which you could you this equipment to raise the crate.
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