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A ball is thrown vertically upwards into the air. It rises a vertical distance of 3.1 m before falling to the ground. Assuming that all of the ball's initial kinetic energy is converted into gravitational potential energy as the ball rises, at what speed was the ball thrown into the air?
You should assume g = 9.8 m s-2 and give your answer to an appropriate number of significant figures and in the correct SI units.
An 83.6kg person with density 1055 kg/m^3 stands on a scale while completely submerged in water. what does the scale read
Two rockets approach earth from opposite directions at equal speeds relative to the earth. How fast are the rockets moving with respect to the earth
question what mass of solid cao is needed to remove the sulfur dioxide from 1.0 106 m3 of air having an so2
Alpha Centauri, a star close to our solar system, is about 4.3 light years away. Suppose a spaceship traveled this distance at a constant speed of .90c relative to Earth. What is the trip distance according to the traveler
23g of copper pellets are removed from a 300?C oven and immediately dropped into 70mL of water at 23?C in an insulated cup
A gate is free to rotate without friction about its hinges at H. The gate is initially at rest. Compute the magnitude of the mud's angular momentum about H
Point charges q1=? 4.10nC and q2=+ 4.10nC are separated by distance 3.20mm , forming an electric dipole, What is the direction of the dipole moment
Will is attempting to swim to a dock directly across a river from his current position. In what direction should he swim relative to his intended path
A 2.5 kg block of ice at a temperature of 0.0 C and an initial speed of 5.7 m/s slides across a leveled floor. If 3.3 x 10^5 J are required to melt 1.0 kg of ice, how much ice melts, assuming that the initial kinetic energy of the ice block is entire..
One day when you come into physics lab you find several plastic hemispheres floating like boats in a tank of fresh water. What is the mass of the heaviest rock that, in perfectly still water, won't sink the plastic boat
A ship sets out to sail to a point 148km due north. An unexpected storm blows the ship to a point 109km due east of its starting point.
The three ropes shown are tied to a small, very light ring that is stationary. Two of these ropes are anchored to walls at rightangles with the tensions shown in the figure. What is the magnitude of the tension T3 in the third rope, ifT1 = 56.3 N,..
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