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During a lunar eclipse, the Moon, Earth, and Sun all lie on the same line, with the Earth between the Moon and the Sun. The Moon has a mass of 7.36x10^22kg; the Earth has a mass of 5.98x10^24kg; and the Sun has a mass of 1.99x10^30kg. The separation between the Moon and the Earth is given by 3.84x10^8m; the separation between the Earth and the Sun is given by 1.496x10^11m.
(a) Calculate the force exerted on the Earth by the Moon.
(b) Calculate the force exerted on the Earth by the Sun.
(c) Calculate the net force exerted on the Earth by the Moon and the Sun.
A bus makes a trip according to the position time graph shown in the drawing. Find the average velocity (magnitude & direction) of the bus during each of the segments labelled A, B, & C?
An electric motor with a 4.7-hp output drives a machine with an efficiency of 30%. What is the energy output of the machine
A laser emits a light beam with a power of 5 mW. How many photons per second does this laser emit
On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a 6 iron. For how much more time was the ball in flight
A 35 ? lamp and a 90 ? lamp are connected in series and placed across a potential of 40 V. What is the voltage drop across the first lamp
A silver wire has resistivity p = 1.96 x 10-8 ohm·m and a cross-sectional area of 4.40 mm2. What is the displacement current in the wire at that time
The spring of the pressure gauge shown in has a force constant of 1 400N/m, and the piston has a diameter of 1.60cm. When the gauge is lowered into water in a lake, what change in depth causes piston to move in by 0.850cm.
The left ventricle of the heart accelerates blood from rest to a velocity of + 20.8 cm/s. How much time does blood take to reach its final velocity
At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. What is the radius of a chamber
The Mariana trench is located in the Pacific Ocean at a depth of about 11 000 m below the surface of the water. For comparison, determine the weight of a jetliner whose mass is 4.30 × 105 kg
In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0682 s, determine the vertical components of the launch velocity.
A lightbulb is 48 cm from a convex lens, and its image appears on a screen located 31 cm on the other side of the lens. By how much is the image enlarged or reduced
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