Gravity Gauntlet

Froggy Jumps

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Newtonian gravity mastery quiz

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serenity

United States

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Gravity Gauntlet


Froggy Jumps Gravity GauntletOnline version Newtonian gravity mastery quiz by serenity 1 According to Newton, the greater the distance between gravitationally interacting objects, the a less the gravitational force between them. b constancy of the force between them. c more the gravitational force between them. 2 Two objects move toward each other due to gravity. As the objects get closer, the acceleration of each a decreases. b remains constant. c increases. 3 If the masses of two planets are halved and the distance between reduces by half, the force between them would be a half as much. b unchanged. c twice as much. 4 What is the magnitude and direction of the gravitational force that acts on a person who weighs 700 N at the Earth's surface? a 600 N b 70 N c 700 N 5 If Earth's mass decreased to one-half its original mass with no change in radius, your weight would a decrease to one-quarter. b decrease to one-half. c remain the same. 6 If the Sun were twice as massive, a its pull on the Earth would double. b both c Earth's pull on the Sun would double. 7 A very massive object A and a less massive object B move toward each other under the influence of gravity. Which force, if either, is greater? a the force on B b both forces are the same c the force on A 8 An object placed halfway between the Earth and the Moon will fall toward the a Moon. b Earth. c neither 9 The force of gravity acts on all apples on an apple tree. Some apples are twice as far from the ground. Such twice-as-high apples of the same mass, have a 1/2 the weight. b practically the same weight. c 1/4 the weight. 10 Inside a freely falling elevator you would experience no a both b gravitational force. c weight. 11 Strictly speaking, when you step off a curb you are momentarily a in orbit b weightless c in space 12 a rock is thrown upward at 50 with no respect to the horizontal. As it rises, its horizontal component of velocity a increases b remains unchanged c decreases 13 A projectile is launched straight upward at 50 m/s. If air resistance is negligible, its speed upon returning to its starting point is a less than 50 m/s. b 50 m/s c more than 50 m/s 14 If projectile is fired straight up at a speed of 10 m/s, neglecting air resistance, the time it takes to reach the top of its path is a 1 s. b 2 s. c 10 s. 15 A projectile is thrown into the air at an angle of 50 and lands on a target that is at the same level the projectile started. With no air resistance it will also land on the target if it is thrown at an angle of a 40 b 45 c 60 16 The temperature of boiling water is a 100 C/ 212 F b 373.15 K c all the above 17 The temperature of melting ice is a 0C b 32F c both 18 When you touch a piece of ice with your finger, energy flows a from your finger to the ice. b from the ice to your finger. c both ways 19 Absolute zero corresponds to a temperature of a 0 K b -273* C c both 20 Heat is thermal energy that flows due to a molecular activity. b calorie imbalance. c temperature differences. 21 A nutritionist in the United States measures the food energy in units of a Calories. b joules c none of the above 22 For each degree a volume of air at 0C is cooled, its volume a shrinks by 1/273 b shrinks by 100/273 c increases by 1/273 23 A volume of helium gas has a temperature of 10C. The same gas twice as hot has a temperature of a 20C b 283C c 293C 24 Heat is thermal energy that matter a contains b transfers c both 25 A piece of iron and a cup of water both have the same temperature. If they are heated so the thermal energy of each doubles, a the water will have the higher temperature b the iron will have the higher temperature c both will have the same temperature 26 Which law of thermodynamics is a restatement of the conservation of energy as it applies to thermal systems? a first law b second law c third law 27 Which law of thermodynamics addresses the direction of heat flow? a first law b second law c third law 28 Which law of thermodynamics states that no system can reach absolute zero? a first law b second law c third law 29 Increasing the temperature of 80 grams of water by 2C requires a 1 calorie. b 160 calories. c none of the above. 30 An electron and a proton a attract each other. b repel each other. c attract or repel depending on distance. 31 Every electron in universe is surrounded by its own a electric field. b gravitational field. c both 32 A negatively-charged balloon touching a wooden wall a pulls positive charge on the wall surface toward it. b pushes negative charge in the wall away from it c all of the above 33 Two charged particles repel each other will a force F. If the charge on one particle is doubled and the distance between them is doubled, the force will be a F. b 2 F. c F/2. 34 The direction of an electric field is defined as the direction of force on a a charged particle. b a positively-charged particle. c a negatively-charged particle. 35 The electric force on a 2-C charge is 60 N. How great is the electric field at the charge location? a 30 N/C b 60 N/C c 120 N/C

Gravity Gauntlet

Froggy Jumps

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Gravity GauntletOnline version

by serenity

According to Newton, the greater the distance between gravitationally interacting objects, the

Two objects move toward each other due to gravity. As the objects get closer, the acceleration of each

If the masses of two planets are halved and the distance between reduces by half, the force between them would be

What is the magnitude and direction of the gravitational force that acts on a person who weighs 700 N at the Earth's surface?

If Earth's mass decreased to one-half its original mass with no change in radius, your weight would

If the Sun were twice as massive,

A very massive object A and a less massive object B move toward each other under the influence of gravity. Which force, if either, is greater?

An object placed halfway between the Earth and the Moon will fall toward the

The force of gravity acts on all apples on an apple tree. Some apples are twice as far from the ground. Such twice-as-high apples of the same mass, have

Inside a freely falling elevator you would experience no

Strictly speaking, when you step off a curb you are momentarily

a rock is thrown upward at 50 with no respect to the horizontal. As it rises, its horizontal component of velocity

A projectile is launched straight upward at 50 m/s. If air resistance is negligible, its speed upon returning to its starting point is

If projectile is fired straight up at a speed of 10 m/s, neglecting air resistance, the time it takes to reach the top of its path is

A projectile is thrown into the air at an angle of 50 and lands on a target that is at the same level the projectile started. With no air resistance it will also land on the target if it is thrown at an angle of

The temperature of boiling water is

The temperature of melting ice is

When you touch a piece of ice with your finger, energy flows

Absolute zero corresponds to a temperature of

Heat is thermal energy that flows due to

A nutritionist in the United States measures the food energy in units of

For each degree a volume of air at 0*C is cooled, its volume

A volume of helium gas has a temperature of 10*C. The same gas twice as hot has a temperature of

Heat is thermal energy that matter

A piece of iron and a cup of water both have the same temperature. If they are heated so the thermal energy of each doubles,

Which law of thermodynamics is a restatement of the conservation of energy as it applies to thermal systems?

Which law of thermodynamics addresses the direction of heat flow?

Which law of thermodynamics states that no system can reach absolute zero?

Increasing the temperature of 80 grams of water by 2*C requires

An electron and a proton

Every electron in universe is surrounded by its own

A negatively-charged balloon touching a wooden wall

Two charged particles repel each other will a force F. If the charge on one particle is doubled and the distance between them is doubled, the force will be

The direction of an electric field is defined as the direction of force on a

The electric force on a 2-C charge is 60 N. How great is the electric field at the charge location?