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if you hold a 40 cm high square plane mirror 45 cm from your eyes and can just see the full length of an 8.5 m flagpole behind you, how far are you from the pole? (hint a diagram is helpful)
An X-ray photon with a wavelength of 0.260 nm scatters from a free electron at rest. Find the final momentum of the photon
A 10720 kg sailboat is moving through the waters of the Atlantic. Initially, the boat is traveling at 35 mph, 33 degrees East of North. calculate the force of the wind on the boat
find the magnitude and direction of the resultant force A + B that is applied to the stump. Specify the direction with respect to due east.
A 1 m long pedulum with a 2kg mass is pulled back 0.1m and after that released, so that it swings back and forth. How did they solve T= 2.007 seconds.
Four identical particles each have charge q and mass m. They are free from rest at the vertices of a square of side L. How fast is each charge moving when their distance from center of the square doubles.
An undiscovered planet, many lightyears from Earth, has one moon in a periodic orbit. calculate the moon\'s radial acceleration
Two charged spheres are 8.45 cm apart. They are moved and the force on each of them is found to have been tripled. How far apart are they now.
Density is the ratio of an object;s mass to its volume. Would you except density to be a vector or a sdcalar quanity? Explain.
A golf ball is dropped from rest from a height of 9.50 m. It hits the pavement, then bounces back up, rising just 5.50 m before falling back down again. find the total amount of time that the ball is in the air
A woman can read the large print in a newspaper only when it is at a distance of 65 cm or more from her eyes. What should be the refractive power (in diopters) of her glasses
A student sits on a rotating stool holding two 3.9-kg objects. When his arms are extended horizontally, Find the new angular speed of the student
During a thunderstorm, you see a flash of lightning hit the Earth far away from your location. You look at your watch and hear the thunder exactly 10 s after. How far away did the lightning strike the ground
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