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In a mall, a shopper rides up an escalator between floors. At the top of the escalator, the shopper turns right and walks 10.1 m to a store. The magnitude of the shopper's displacement from the bottom of the escalator to the store is 16.0 m. The vertical distance between the floors is 7.60 m. At what angle is the escalator inclined above the horizontal?
Find the critical angle of incidence for a ray of light going from a diamond to air
using a large shiny curved surface (mirror). you notice that an object is upright and exactly 2/3 of the height of the object when it is 150m away from the mirror. what is the image distance
q1. a certain kind of glass has an index of refraction of 1.660 for blue light of wavelength 420 nm and an index of
What is the greatest mass that can be accelerated upwards at 2.9 m/s2 if the stress in the cable is not to exceed the elastic limit of the cable, that is 2.2 108 Pa.
The combined mass of the professor and the chair is 90-kg. He is pushed 2.60-m along the incline by a group of students who together exert a constant horizontal force of 600-N. The professor speed at the bottom of the ramp is 1.75m/s. use the work..
A camera with a telephoto lens of focal length 125 nm is used to take a photograph of a plant 1.8 m tall. The plant is 5.0 m from the lens. How tall is the image
A gun shoots bullets that leave the muzzle with a speed of 336 m/s. If a bullet is to hit a target 136 m away at the level of the muzzle, the gun has to be aimed at a point above the target. How far above the target is this point.
Starting from rest, the elevator accelerates upward. During the acceleration, the hoisting cable applies a force of 9300 N. Illustrate what does the scale read during the acceleration?
A horizontal rifle is fired at a bull's-eye. The muzzle speed of the bullet is 655 m/s. What is the horizontal distance between the end of the rifle and the bull's-eye
Brain injuries generally occur any time the brain's acceleration reaches 100 g for even a short time, Consider a car running into a solid barrier
q1. every day our earth receives 1.55times1022 j energy from the sun. if we were able to use 0.85 percent of this
do believe that we as a country should be taking more or less preventative measures against global warming?explain why
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