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The earth's orbit about the sun is almost a circle. a)What is the angular velocity of the earth (regarded as a particle ) about the sun and b)its average linear speed in its orbit? c) What is the acceleration of the earth with respect to the sun?
An electron is accelerated from rest through a potential difference that has a magnitude of1.65 107 V. what is the relativistic kinetic energy (in joules) of the electron
An astronaut can barely resolve two objects on the earth's surface, 230 km below. What is the minimum distance smin that separates the two objects
A metal rod (2.4 kg, 1.5 m long) is rotating about an axis through its center at 20.0 rad/s. Calculate its rotational kinetic energy
A very distant galaxy has an apparent bolometric magnitude of +23.5. Determine the measured flux of photons
A spring with k=620 N/M is stretched with a tension of 40 N. What is the potential energy of the stretched spring
calculate the work done by a person pulling a 50kg sled, at constant velocity, along the snow at an angle of 50 degrees from vertical for 5m
Another student bumps the field-producing device so that the electric field is now (23.7 N/C)i + (15.5 N/C)k, What is the new electric flux through the hoop
A 0.500 kg hammer is moving horizontally at 6.50 m/s when it strikes a nail and comes to rest after driving it 1.00 cm into a board. Calculate the duration of the impact
An artillery gun is firing a shell with the initial velocity V0 =250 m/s at an angle 1 =60o to the horizontal. Find the time interval t between shots
A swimmer bounces straight up from a diving board and falls feet first into a pool. What is her velocity when her feet hit the water
Suppose Fuzzy, a quantum-mechanical duck, lives in a world in which h = 2?J · s. Fuzzy has a mass of 2.25 kg, What is the minimum uncertainty in the duck's speed
What is the speed of an electron that has a total energy of zero in a hydrogen atom
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