The ratio of electrical force, Fe, to the gravitational force Fg, between two electrons is

A) 2.1 × 1042
B) 4.2 × 1042
C) 6.3 × 1042
D) 8.4 × 1042
E) 9.8 × 1042


B

Physics & Space Science

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The special theory of relativity was developed

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Conservation of ___________ is observed in all interactions

a. baryon number b. lepton number c. strangeness d. charm e. beauty

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A stone is dropped from the top of a well that has water in it at a depth of 30.0 m. How long does it take the stone to reach the water?

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A solid wood door, 90.0 cm wide by 2.00 m tall has a mass of 35.0 kg. It is ajar and at rest. A ball with a mass of 500 g is thrown perpendicular to the door with a speed of 20.0 m/s and hits the door 60.0 cm from the hinged side

The ball rebounds with a speed of 16.0 m/s along the same line. How much energy is lost in the process? A) 29.8 J B) 16.3 J C) 14.9 J D) 12.7 J E) 4.79 J

Physics & Space Science