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At a certain instant, the earth, the moon, and a stationary 1260 kg spacecraft lie at the vertices of an equilateral triangle whose sides are 3.84×10^5 km in length
What is the magnitude of the net gravitational force exerted on the spacecraft by the earth and moon?
What is the angle measured from a line connecting the earth and the spacecraft?
Express your answer to three significant figures.
q. a baby bounces up and down in her crib. her mass is 10.5 kg and the crib mattress can be modeled as a light spring
A 75 kg man is riding an escalator in a shopping mall. Theescalator moves the man at a constant velocity from ground level tothe floor above, What is the work done on the man
On a sunny morning in a ?eld, the atmospheric pressure is 10N/m and the temperature is 279 K. How much heat must be added to the air in the balloon to initiate the ?ight
A parallel plate air filled capacitor having area 40cm^2 and plate spacing 1.0mm is charged to a potential difference of 600V. find the energy density between the plates
Two, concentric, thin spherical shells of radii R1 = 40.8 cm and R2 = 51.0 cm are uniformly charged with a total charge Q1 = â€"50.5 μC, What is the potential of the outer shell
piano tuners tune pianos by listening to the beats between the harmonics of two different strings. when properly tuned
70.1 million excess electrons are inside a closed surface. What is the net electric flux through the surface
A paddle wheel frictionally adds thermal engery to 5.0 moles of an ideal monatomic gas in a sealed insulated container. The paddle wheel is driven by a cord connected to a falling object as shown in the drawing. How far has the 2.0kg object fallen..
You are working for a shipping company. Your job is to stand at the bottom of a 5.9 -long ramp that is inclined at 45 above the horizontal. You grab packages off a conveyor belt and propel them up the ramp.
What is the period of oscillation of the scale? State your reply numerically in seconds.
The world's strongest magnet that can produce a sustained field is a 45-T device at the National High Magnetic Field Laboratory in Florida. What's the corresponding magnetic-energy density
A uniformly accelerated car passes three equally spaced traffic signs. The signs are separated by a distance d = 21 m. What is the magnitude of the acceleration of the car
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