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A 770 N student stands in the middle of a frozen pond having a radius of 6.3 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome this diffuculty, he throws his 2.6 kg physics textbook horizontally toward the north shore at a speed of 6.7 m/s. The acceleration of gravity is 9.81 m/s^2 How long does it take him to reach the south shore?
What diameter must a helium filled balloon have to float with neutral buoyancy? The mass of the empty balloon is 2.0g
A compressed spring shoots the block radically outward along a frictionless groove in the surface of the turntable. Illustrate what is the turntable's rotation angular velocity when the block reaches the outer edge?
A player passes a basketball to another player who catches it at the same level from which it was thrown. The initial speed of the ball is 8.1 m/s, What was the initial direction of the ball
A short mild steel column with fixed ends has a cross section of 100mm by 50mm. Assuming a safety factor of 6 calculate the load that it can safely support?
An electric utility company supplies a customer's house from the main power lines (115V) with two copper wires, Calculate the power lost in the copper wires
An airplane is flying in a horizontal circle at a speed of 520 km/h. If the wings of the plane are tilted 34° to the horizontal, what is the radius of the circle (in m) in which the plane is flying
A 51.5 kg hoop rolls along a horizontal floor so that its center of mass has a speed of 0.110 m/s. How much work must be done to stop it
A great amount of water vapor changes phase to become water in the clouds that form a thunderstorm. Does this process release or absorb thermal energy
Select all that apply. Which is the following statements is true?
Estimate the terminal velocity for a dust particle in air. Assume it has a radius of 1.0 um and a density similar to that of balsa wood
Suppose you wish to make a solenoid whose self-inductance is 1.5 mH, The inductor is to have a cross-sectional area of 1.7 x 10-3 m2 and a length of 0.046 m
A microwave oven of mass 12.5kg is pushed a distance 8.00m up the sloping surface of a loading ramp inclined at an angle of 36.2? above the horizontal, What is the work done on the oven by the force
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