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A particle moves along the path whose equation is r = 6theta feet. If the angle theta = 2t^3 radians, determine the velocity of the particle when theta = 40degrees. Express your answer in polar vector form.
A mass of 2.0 Kg hangs from a spring with a force constant of 50 N/m. What is the amplitude of the resulting oscillations
Calculate the magnitude and direction of the transverse horizontal force acting on the train
A current loop in a motor has an area of 0.85 . It carries a 240 current in a uniform field of 0.62. What is the magnitude of the maximum torque on the current loop
A Carnot engine whose cold reservoir temperature is 1.0 C has a thermal efficiency of 40%. By how much should the temperature of the hot reservoir be increased to raise the efficiency to 60%?
The length of a moving spaceship is 28.4 m according to an astronaut on the spaceship. what is the speed of the spaceship
A woman finds the front windshield of her car covered with ice at -12.0 °C. How much heat is required to melt the ice
A scuba diver at a depth of 42.0 m below the surface of the sea off shores of Panama City, where the temperature is 7 °C, releases an air bubble with volume 18 cm3.
A particle is moving with a certain speed. Its speed and momentum are being measured with respect to Earth. What was the original speed of the particle
A typical coal-fired power plant has a generating capacity of about 1.3 X 10^9 W of electric power. What is the overall thermal efficiency of the plant
A converging lens with a focal length of 7.00cm forms an image of a 3.80mm -tall real object that is to the left of the lens. Where are the object and image located
A rotating fan completes 1200 revolutions every minute. Consider the tip of a blade, at a radius of 0.11 m. Through what distance does the tip move in one revolution? What is the tip's speed
Calculate the angular velocity of the wheel when the suitcase reaches the ground. compute the moment of inertia of the wheel.
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