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A 12.0 uF capacitor is charged to a potential of 50-V and then discharged during a 175 ohm resistor. How long does it take the capacitor to lose (a) half of its charge and (b) half of its stored energy?
a baseball has mass 0.145 kg.a if the velocity of a pitched ball has a magnitude of 50.0 ms and the batted balls
An astronaut is traveling in a space vehicle that has a speed of 0.515c relative to Earth. The astronaut measures his pulse rate at 69.0 per minute. What pulse rate does the Earth observer measure
A 818 kg car is going 28 m/s and the driver has to slam on his brakes to prevent an accident. find the change in temperature of the brake pads and rotors
A spaceship travels at a constant speed from earth to a planet orbiting another star. When the spacecraft arrives, thirteen years have elapsed on earth, and 6.5 years have elapsed on board the ship. How far away (in meters) is the planet, according t..
Utilizing an information provided in your course text, complete the "Motivation Concepts Table." This table will serve as a convenient quick reference for the remainder of the course.
A 5.0 megawatt windmill has three 45 m-long blades that can be approximately viewed as straight rods. If the rotational speed of the rods is 6 rpm, what is the mass of each rod
2 kg block slides on a rough horizontal surface. the block hits a spring with a speed of 2.4 m/s and compresses it a distance of 11 cm before coming to rest. what is the force constant of the spring
An atom is ionized so that it has only one electron. When the electron drops from the n = 4 shell to the n = 1 shell, an X-ray of wavelength 155.61 pm is emitted. What is the atomic number
What approximations can you make about reactances when the series RCL circult is connected to a battery, Which reactance would be the most important
A tiger leaps horizontally from a 5.5 m high rock with a speed of 3.9 m/s. How far from the base of the rock will she land
when a parachute opens the air exerts a large drag force on it. this upward force is initially greater than the weight
Two bars of identical mass are at 33°C. One is made from glass and the other from another substance. Find the specific heat capacity of the other substance
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