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You wish to launch a satellite that will remain above the same spot on earth's surface. this means the satellite must have a period of exactly one day. calculate the radius of the circular orbit this satellite must have.
a ray of light incident upon a mirror makes an angle of 33.9° with the mirror. What is the angle between the incident ray and the reflected ray
After a plant or animal dies, its 14C content decreases with a half-life of 5730 years. what is the age of the ancient site
A transformer is to be used to provide power for a computer disk drive that needs 5.0 V (rms) instead of the 120 V (rms) from the wall outlet. The number of turns in the primary is 415, and it delivers 500 mA (the secondary current) at an output v..
A microwave radio transmitter emits electromagnetic waves of a single wavelength. What is the power of the transmitter
Two parallel planar mirrors face each other. An object is placed between them at a distance x from one and 3x from the other. how far away are the second-order images from the object, in terms of x
A skier slides horizontally along the snow for a distance of 21 m before coming to rest. how fast was the skier going
Calculate the acceleration of the arrow in the bow.
A 48.9 kg pole vaulter running at 13.0 m/s vaults over the bar. Assuming that the vaulter's horizontal component of velocity over the bar is 1.7 m/s and disregarding air resistance, how high was jump.
A blackened, solid copper sphere that has a radius equal to 4.5 cm hangs in an evacuated enclosure whose walls have a temperature of 23°C. find the initial rate at which its temperature changes
A light bulb is rated at 60W, 120 V. how many electrons flow through the bulb per second and find the resistance of the bulb
How numerous extra electrons are on this particular oil drop (given the presently known charge of the electron)?
A molecule of DNA (deoxyribonucleic acid) is 2.09 µm long. The ends of the molecule become singly ionized: negative on one end, compute the effective spring constant of the molecule
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