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You are researching personal watercraft (PWC) safety. These vehicles have a well known safety issue in which the rider loses stearing control when there is no thrust from the engine. You want to know for what distance the rider loses control when the machine loses thrust at top speed. The particular PWC you are testing weighs 635 lbs (has mass 288 kg) and has a top speed of 7.0 × 101 mph (31 m/s). It takes 2.0 × 101 s for the watercraft to slow to a safe 2.25 mph (1 m/s). What is the distance covered in that time? Ignore air resistance.
Suppose atmospheric pressure at Denver is 1.0135 × 105 N/m2 today. How high will the water column stand on the barometer tube
A radio tuner is built by connecting an L=0.48mH inductor and variable capacitor in series with an antenna. What is the quality factor of the circuit with the capacitance you found
A spaceship moves away from Earth at a speed 0.417 c and fires a shuttle craft that then moves in a forward direction at 0.701 c relative to the ship. determine the speed of the pribe realitive to earth
question1a bus travels 330 km south along a straight path with an average velocity of 84 kmh to the south. the bus
You are a space traveller and you land on the surface of a new planet. You decide to drill a tunnel through the center of the planet to the opposite side of the planet. How long will it take to make it to the other side of the planet
An Olympic long jumper leaves the ground at an angle of 19.8 ° and travels through the air for a horizontal distance of 8.17 m before landing. What is the takeoff speed of the jumper
An airplane pilot wishes to fly to his destination 500 mi due west, but the wind is blowing at 21.5 mi/hr toward 18.9° north of west. what will be the speed of the plane relative to the ground
Three objects with masses, m1 = 6.0 kg, m2 = 10.0 kg, and m3 = 15.0 kg, are attached by strings over frictionless pulleys as indicated. The horizontal surface is frictionless and the system is released from rest. Using energy concepts, find out th..
You want to lift a heavy box with a mass of 98 kg using a two pulley system. If you lift the box by 1 m, how much work is done by gravity
A circular saw blade 0.200 m in diameter starts from rest. Find the angular acceleration and the angle through which the blade has turned in this time
a pottery wheel is rotating initially with an angular velocity of 4.0rad/s clockwise. find the direction of the angular acceleration of the wheel
An outfielder throws a 0.150 kg baseball at a speed of 36.0 m/s and an initial angle of 30.0°. What is the kinetic energy of the ball at the highest point of its motion
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