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Physics

Valentin Rosales

X-component is 5, and y-component is 4. what is the angle of vector?

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Physics

Ryleigh Everett

An open train car, with a mass of 2150 kg, coasts along a horizontal track at the speed 2.83 m/s. The car passes under a loading chute and, as it does so, gravel falls vertically into it for 2.95 s at the rate of 481 kg/s. What is the car's speed v f after the loading is completed? Ignore rolling friction.

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Physics

Belinda Ho

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. Which statement is true for this reaction?

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Physics

Madelynn Huffman

Why does an object in motion stay in motion unless acted on by an unbalanced force?

A) because forces are what stop and start motion

B) because balanced forces cannot exist in nature

C) because motion is the inherent state of all matter

D) because motion, once begun, continues to accelerate

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Physics

Gillian Vega

A car travels 100 meters in 4.0 seconds. find its average velocity.

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Physics

Maeve Novak

What force must he used to do 224 joules of work on an object over a distance of 32 meters

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Physics

Kristen

If my science fair project is about if girls can see through illusions better than boys, what would my background research be about?

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Physics

Angelina Bowers

What is another hypthesis that might expain hy hummingbirds seem to prefer red flowers

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Physics

Guest

Why dont animal cells need chloroplasts?

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Physics

Aditya

Is sugar cane a renewable or non-renewable source of energy? And why?

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Physics

Demarcus Woodward

The speed an object needs to move away from the gravitational pull of the earth is called

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Physics

Savion Allison

Which fact is NOT true about gravity? Gravity depends on distance. Gravity depends on weight. The force of gravity between two objects will never be 0. Gravity depends on mass.

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Physics

Guest

Does heat demagnetize?

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Physics

Jaydin Burke

A golfer strikes a golfball on the ground

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Physics

Haas

Amy walks 32 m right and then 12 m left. She turns and walks another 28 m right and then turns and walks 7 m left. What is Amy's displacement?

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