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1) A hard steel ball is dropped from rest at postion y = 2h and bounces from a hard surface tilted at an angle phi from horizontal. On impact, the ball's component of velocity perpendicular to the surface is reversed (equal magntude oppostite direction), while the velocity component parallel to the surface is unchanged. (This is called a perfectly elastic collison.) Find the horizontal displacment of the ball when it hits the ground (at y = 0) from the point of impact with the surface.
A spring with spring constant k = 430 N/m is initially compressed x = 1.60 cm. How much work is done by the spring during this process
A car takes a sharp turn on a road. Which of the following provides the centripetal force on the car? The weight of the car, frictional force, tangential acceleration, or gravitational force?
When these waves move into a shallower part of the lake, their speed decreases to 1.6 m/s, though their frequency remains the same. Find out the wavelength of the waves in the shallower water.
A particle has an acceleration of 6.19 m/s^2 for 0.350 s. What was the particle's initial velocity
What is the wavelength of the spectral line? B) Assuming this line is from a transition from level n1 = 3 to level n2 = 2 (i.e. the longest wavelength Balmer series transition), what do you calculate for the value of Rydberg constant.
When verticaly falling sand hits a horizontally moving cart, the cart slows. avoid any friction between the cart and the tracks. Give two reason for this, one in terms of a horizontal force acting on the cart, and one terms of momentum conservatio..
suppose that the displacement of your hand is 0.70 m as you throw the ball straight up. How long is the ball is in your hand.
A soccer player kicks the ball toward a goal that is 21.0 m in front of him. Find the speed of the ball when the goalie catches it in front of the net
A 30-meter steel tape is correct at a temperature of 20.0(C). The distance between two points, What is the true distance between the points
One gallon of gasoline contains 3.1x10^7 calories of potential energy that are released during combustion. what is the average force produced by the gasoline
A 12 kg runaway grocery cart runs into a spring with spring constant 300 N/m and compresses it by 70 cm.What was the speed of the cart just before it hit spring.
Suppose you point a pinhole camera at a 15-m-tall tree that is 75m away. If the film is 22cm behind the pinhold, what will be the size of the tree's image on the film
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