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A moon worm is orbiting an asteroid in a circular path with radius r and speed v. If the moon worm decides to double its speed, how will it have to change the radius of its path so that it continues to orbit the asteroid in a perfect circle?
The space between two concentric conducting spherical shells of radii b = 2.40 cm and a = 1.20 cm is filled with a substance of dielectric constant ? = 13.1. A potential difference V = 89.0 V is applied across the inner and outer shells.
An Automobile engine slows down from 4500 rpm to 1200 rpm in 2.50 s. Calculate (a) its angular acceleration, assumed constant and (b) total number of revolutions the engine makes in this time.
When 1g of natural gas is burned in a stove, about 56kJ ofheat is produced. How much mass is lost in the process
A galvanometer whose full scale current is 150amps and coal resistance is 75ohms is used with a 1.50 ohms shunt resistor to make an ammeter. what is the largest current that can be measured by the ammeter.
Standing on the surface of a small spherical moon whose radius is 6.75·104 m and whose mass is 6.71·1018 kg, What maximum height above the surface of the moon will the rock reach
The amplitude of a lightly damped oscillator decreases by 4.9% during each cycle. What percentage of the mechanical energy of the oscillator is lost in each cycle
When a diver jumps into the ocean, water leaks into the gap region between the diver's skin and her wetsuit, estimate how much energy (in units of candy bars = 300 kcal) is required by this heating process
the two stars in a binary star system have masses 1.7 x 10 ^ 30 kg and 5.8 x 10 ^ 30kg. They are separated by 2.1 x 10 ^ 12m, What is the speed of the heaviest star
A block of mass 4.7 kg slides 20 m from rest down an inclined plane making an angle of 24 o with the horizontal. If the block takes 10 s to slide down the plane, what is the retarding force due to friction?
When a proton (+1.6 x 10^-19 C) moves .10 m along the direction of an electric field of strength 3.0 N/C, what is the magnitude of the electrical potential difference between the protons initial and ending points
A 4.00 kg hollow sphere of radius 5.00 cm starts from rest and rolls without slipping down a 30.0 degree incline. If the length of the incline is 50.0 cm, then the velocity of the center of mass of the hollow sphere at the bottom of the incline is:
The resolution of the eye is ultimately limited by the pupil diameter. What is the smallest diameter spot the eye can produce on the retina
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