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A diver springs upward from a board that is three meters abovewater. At an instant he contacts the water his speed is 9.20 m/sand his body makes an angle of 78.0o with respect to the horizontalsurface of the water.
(a) Determine his initial velocity (magnitudeand direction).
(b) What is his maximum height above the watersurface?(c) Find the horizontal distance between his initial and finalpoints.
A stone is dropped from a cliff; 2.47 s later another stone is thrown downward with an initial speed of 35 m/s. Find the height of the cliff
King Arthur's knights fire a cannon from the top of the castle wall. The cannonball is fired at a speed of 50 m/s and at an angle of 35°. What is the ball's maximum height above the ground
In a lightning bolt, a large amount of charge flows during a time of 2.9 x 10-3 s. Assume that the bolt can be represented as a long, How much charged has flowed during the lightning bolt?
A crate of 45.2-kg tools rests on a horizontal floor. You exert a gradually increasing horizontal push on it and observe that the crate just begins to move when your force exceeds 310N. find the coefficient of static friction between the crate and ..
A certain gasoline engine has an efficency of 30% what would the hot resevoir temp be for a carnot engine having that efficency if it operates with a cold resevoir temp off 200C
A dump truck, with a mass of 2030 kg, moves at a constant speed 2.23 m/s along a horizontal track. What is the truck's speed after the loading is completed
What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20^circ {rm C}? Suppose that the air bubble is always in thermal equilibrium with the surrounding water.
Two long, straight wires cross each other at right angles, and each carries same current. Which of the following statements are true regarding the total magnetic field at the various points due to the two wires.
Two 10 cm long thin glass rods uniformly charged to + 10;{rm nC} are placed side by side, 4cm apart. What are the electric field strengths E_1, E_2, and E_3 at distances 1.0 cm, 2cm, and 3cm to the right of the rod on the left, along line connecti..
A 13g bullet traveling 221 m/s penetrates a 2 kg block of wood and emerges cleanly at 160 m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges.
A cylinder of gas is at room temperature (20°C). What is the new pressure of the gas relative to its initial pressure
A 40-g block of ice is cooled to ?70°C and is then added to 590 g of water in an 80-g copper calorimeter at a temperature of 22°C. Determine the final temperature of the system consisting of the ice, water, and calorimeter.
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