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The frequency of an electromagnetic wave is f = 3.75 x 1014 Hz and its wavelength in a particular material is %u03BB = 550 nm. What is the index of refraction n of the material?
Hakeem throws an 8.00 g ball straight down from a height of 2.0 m. The ball strikes the floor at a speed of 7.40 m/s. What was the initial speed of the ball? Assume that air resistance is negligible.
A displacement vector at an angle of 150 degrees (counter clockwise) from the x axis has a y component equal to 123 meters
The mass of a discus is 2 kg. The average net torque exerted on the discus was 100 Nm, What was the angular impulse applied to the discus during the throw
An asteroid orbiting the Sun has a mass of 4.00Ã?1016 kg. At a particular instant, How far is the asteroid from the Sun
A child sits on the edge of a spinning merry-go-round that has a radius of 2.9 m. What is the child's acceleration
If the car starts at height h= 3.00 R and the radius is R_1 = 24.0 m, compute the radial acceleration of the passengers while the car is at point C, which is at the end of a horizontal diameter.
At a certain point, A, in its motion, its velocity angle is 19° above the horizontal. At another point, B, later in its motion, its velocity angle is 39° below the horizontal. Illustrate what is the horizontal distance from point A to point B?
two basketball players collide head on. play a weighs 80 kg and is travelling 2.5m/s to the right while player b weighs 68 kg and is travelling 1.2 m/s to the left, what is the change in momentum of player a
A rocket in a fireworks display explodes high in the air. The sound spreads out uniformly in all directions. Find the distance from the source at which the intensity is 0.80 10?6 W/m2
a projectile is fired with an initial velocity of 35 m/s at an angle of 30 degrees above horizontal of a 30 feet tall building. find (a) the max height of the projectile
A 750.0 kg boulder is raised from a quarry 125 m deep by a long uniform chain having a mass of 575 kg. What is the max acceleration the boulder can have
As part of an excercise program, a woman walks south at a speed of 2.00 m/s for 60 minutes. She then turns around and walks north a distance of 3000 m in 25.0 minutes
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