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At a certain instant, the earth, the moon, and a stationary 1470 kg spacecraft lie at the vertices of an equilateral triangle whose sides are 3.84 x 10^5 km in length.
a) Find the magnitude of the net gravitational force exerted on the spacecraft by the earth and moon. Find in N.
b) Find the direction of the net gravitational force exerted on the spacecraft by the earth and moon. State the direction as an angle measured from a line connecting the earth and the spacecraft. (in degrees)
c) What is the minimum amount of work that you would have to do to move the spacecraft to a point far from the earth and moon? You can ignore any gravitational effects due to the other planets or the sun. (in J)
when two charges are separated by a distance d their electric potential energy is equal to u. what would be their
The Burj Khalifa in Dubai is the world\'s tallest building. The structure is 828 m (2,716.5 feet) and has more than 160 stories. how high is the hotel room from the ground
The hail comes straight down at a mass rate of m/?t=0.069 kg/s and an initial velocity of v0= -15 m/s. calculate the magnitude of the force exerted by the hail on the roof
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A beetle 4.80mm is examined with magnifier of focal length 10.3 cm. what is the apparent length of the beetle
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A 66 kg solid sphere with a 14 cm radius is suspended by a vertical wire. What is the period of the oscillations
Two lenses, separated by a distance of 22.1 cm, are used in combination. The first lens has a focal length of +26.0 cm; the second has a focal length of -15.0 cm. What is the final image distances relative to the second lens
A person drives north at 25 m/s for 10 min. west at 10 m/s for 15min and 20 m/s for 5 min. on a road that is at an angle of 30° south of east. What is the displacement for each part of the drive
A square with sides of length L has a point charge at each of its four corners. Two corners that are diagonally opposite have charges equal to +2.11 µC; the other two diagonal corners have charges Q. Find the magnitude and sign of the charges Q such ..
A father pulls his young daughter on a sled with a constant velocity on a level surface a distance of 10m. how much work does the father do
A car moving at 20.0 m/s decelerates at 7.00 m/s2. How far will it travel before stopping
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