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A baseball thrown off a pedestrian pathway, 36 m above the Erie Canal, has an initial velocity of 13.2 m/s at an angle of 45° above the horizontal. What is the range of the baseball? Show all work.
Two stationary positive point charges, charge 1 of magnitude 3.80 and charge 2 of magnitude 1.95 , are separated by a distance of 38.0 . An electron is released from rest at the point midway between the two charges.
A child on a swing of length R= 2 meters is given an initial velocity v=8.9 m/s. Calculate the height from the bottom when the cord just goes slack, and the child leaves the circular path
Find the current in a 9.00 ? resistor connected to a battery that has an internal resistance of 0.30, What is the emf of the battery
A gun is fired vertically into a 2.00 kg block of wood at rest straight above it. If the bullet has a mass of 21.0 g and a speed of 198 m/s, how high would the block rise into the air after the bullet becomes embedded in it.
A bullet is fired through a board 8.0 cm thick in such a way that the bullet's line of motion is perpendicular to the face of the board. Find the total time the bullet is in contact with the board
A very fast-moving train car passes you, moving to the right at 0.50c. You measure its length to be 12m. How long does David measure the train car to be
To make a secure fit, rivets that are larger than the rivet hole are often used and the rivet is cooled (usually in dry ice) before it is placed in the hole
A car is traveling with a constant velocity when the driver suddenly applies the brakes, giving the car a deceleration of 3.50 m/s2, what was the magnitude of the car's original velocity
A scientific supply catalog advertises a material having the index of refraction of 0.85. Is that a better product to buy? Why or why not.
You push with a horizontal force of 50.0N against a 24.0N box, pressing it against a rough wall to hold it in place. what is the friction force of the box
A large wheel starts from rest and has a constant angular acceleration of 3.5 radians/second^2. Determine the total angular displacement of the wheel during this motion
The 20-g centrifuge at NASA's Ames Research Center in Mountain View, Determine the rotation rate, in revolutions per second, required to give the astronaut a centripetal acceleration of 19.8g
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