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Problem: Two small balls, A and B, attract each other gravitationally with a force of magnitude F. If we now double both masses and we cut in half the separation of the balls,
Part A: What will be the new magnitude of the gravitational force on each one?
Please help for the above problem, totally confused!! Show each steps if possible, Thanks.
Angel Falls in southeastern Venezuela is the highest uninterrupted waterfall in the world, dropping 979 m (3212 ft). Assume that it takes 14 s for the water to fall from the lip of the falls to the river below. If the water lands 55 m from the bas..
You walk 3.5m in front of a large round mirror. You see yourimage right side up and apparently half your size (height). What is the focal length of the mirror and what kind of mirror isit?
A 120 V potential difference is applied to a space heater whose resistance is 16 Ω when hot. (a) At what rateis electrical energy transferred to thermal energy?(b) What is the cost in cents for 5.3 h at US5.0¢/kW·h?
you are in a hot-air balloon that relative to the ground has a velocity of 6.28 ms in a direction due east. you see a
Bob has just finished climbing a sheer cliff above a beach, and wants to figure out how high he climbed. How high up is Bob, if the ball started from exactly 2 m above the edge of the cliff
A spring is hung from a ceiling, and an object attached to its lower end stretches the spring by a distance d = 6.80 cm from its unstretched position when the system is in equilibrium, determine the mass of the object
An object, that is 3.25 mm high is placed 16 cm in front of a lens. The image produced by this lens appears 6.0 cm behind the object, what is the height of the image
A 3500 kg block falls vertically through 5 m and then collides with a 400 kg pile, driving it 3.0 cm into bedrock. Assuming that the block-pile collision is completely inelastic, find out the magnitude of the average force on the pile from the bed..
Two particles are fixed to an x axis: particle 1 of charge -5.68 × 10-7 C is at the origin and particle 2 of charge +5.68 × 10-7 C is at x2 = 18.2 cm. What is the magnitude of the net electric field
The density of air under standard laboratory conditions is 1.29{\rm kg}/{\rm m}^{3} , and about 20.0\% of that air consists of oxygen. Typically, people breathe about .5 L of air per breath.
Which medical diagnostic methods require using a nuclear reactor or an accelerator?
Two ice skaters, Daniel (mass 60.0kg) and Rebecca (mass 45.0kg), are practicing. Daniel stops to tie his shoelace and, while at rest, is struck by Rebecca, find the magnitude of Daniel's velocity after the collision
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