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Physics

Navarro

What is another name for a pure substance?

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Physics

Guest

A hockey puck, mass of 0.115 kg, moving at 35 m/s strikes a ray thrown on the ice by a fan. The ray has a mass of 0.265 kg. The puck and the ray slide off together.

Find their velocity.

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Physics

Phillips

A horse runs for 15 seconds to the south at a speed of 12 m/s. What is the

displacement of the horse in this time?

A. 180 m south

B. 150 m south

C. 150 m

D. 180 m

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Physics

Gunner Daniel

Suppose you throw a ball straight up into the air. Describe the changes in the acceleration of the ball.

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Physics

Micah Gilbert

Which of these waves cannot travel in a vacuum? electromagnetic wave

sound wave

microwave

light wave

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Physics

Ryker Holden

A uniform cylinder of radius R and mass M is mounted so as to rotate freely about a horizontal axis that is parallel to, and a distance h from the central longitudinal axis of the cylinder. (a) What is the rotational inertia of the cylinder about the axis of rotation? (b) If the cylinder is released from rest with its central longitudinal axis at the same height as the axis about which the cylinder rotates, what is the angular speed of the cylinder as it passes through its lowest position? State your answers in terms of the given variables, using g when appropriate.

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Physics

Karissa Gomez

A car accelerates from 3.5 m/s to 17 m/s in 4.5 seconds. Find the acceleration of the car in m/s2

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Physics

Maximillian Cantrell

At do we call the cells that are made as the end result

of meiosis?

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Physics

Nathalie Henderson

A force of 6.0 newtons changes the momentum of a moving object by 3.0 kilogramâ¢meters per second. how long did the force act on the mass?

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Physics

Selah Pace

What happens if you drop out of navy seals?

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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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