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The moon barely covers the sun at a solar eclipse. Given that the moon is 4 X 105 kilometer from Earth and that the Sun is 1.5 X 108 kilometer from Earth, find how much bigger the Sun diameter is than the moon. If the moon radius is 1800 kilometer, determine how big is the Sun?
a single infinite sheet of charge is aligned on the y axis. a point charge of -6.4 micro-coulombs is placed to the
A certain double-pane window consists of two glass sheet, each 80 cm x 80 cm x 0.30 cm, separated by a 0.30 cm stagnant air space. How much heat passes through the window each second
imagine a very heavy cube of pure gold that is 1.40 m on a side. approximate the atoms in this cube as little cubes.
A helicopter lifts a 72 kg astronaut 15 m vertically from the ocean by means of a cable. How much work is done on the astronaut by the force from the helicopter
A 1000kg car moving at 40mph hits a 750 kg parked car. If they move off locked together after the collision how fast are they moving
A 180 W light bulb is plugged into a standard 110 Voutlet. How much does it cost per month (31 days) to leavethe light turned on, evaluate What is the current of the bulb
a 8.2 kg mass hanging from a spring scale is slowly lowered onto a vertical spring.part a what does the spring scale
please include all units and conversions in calculations.over a time interval of 2.16 years the velocity of a planet
a 5.5 -thick layer of oil n1.46 is sandwiched between a 1.3 -thick sheet of glass and a 2.3 -thick sheet of polystyrene
The angular speed of a propeller on a boat increases with constantacceleration from 10.9 rad/s to 24.0 rad/s in 2.20 revolutions. What is the acceleration of the propeller
971-kg car starts from rest on a horizontal roadway and accelerates eastward for 5.00 s when it reaches a speed of 30.0 m/s. What is the average force exerted on the car
Smaller mammals use proportionately more energy than larger mammals; that is, it takes more energy per gram to power a mouse than a human. A typical mouse has a mass of 20 g and, at rest, needs to consume 3.0 Cal each day for basic body processes.
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