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Alvarado
Hat is the kinetic energy of a 1.0-kg billiard ball that moves at 5.0 m/s?

A.

5.0 J

B.

6.5 J

C.

10.0 J

D.

12.5 J
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Judith Cabrera
Linus builds an electrical circuit with a battery and with wires that carry the current. As the battery weakens, the current also weakens.

How does this affect the magnetic field around the wires?

1The field gets stronger.

2The field gets weaker.

3The field changes direction.

4The field disappears completely.
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Nina Montgomery
Ignoring details associated with friction, extra forces exerted by arm and leg muscles, and other factors, we can consider a pole vault as the conversion of an athlete's running kinetic energy to gravitational potential energy. If an athlete is to lift his body 3.8 m during a vault, what speed (in m/s) must he have when he plants his pole
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Kaya Bridges
DNA is coiled into chromosomes in a cell's
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Gunnar Mejia
When an electron is gained, the resulting ion is? When an electron is lost, resulting ion is?
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Brenna Golden
Why does a straw look broken viewed in a glass of water?
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Bradyn Cook
What would happen to the coil if the current passing through it was too large?
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Cody Galloway
Listed following are three possible models for the long-term expansion (and possible contraction) of the universe in the absence of dark energy:

A) recollapsing universe

B) coasting universe

C) critical universe

Rank each model from left to right based on the ratio of its actual mass density to the critical density, from smallest ratio (mass density much smaller than critical density) to largest ratio (mass density much greater than critical density).
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Mireya Guerrero
Suppose a bird takes off from a tree and flies in a straight line. It reaches a speed of 1o miles per second. What is the change in the bird's velocity?
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Hendrix
What would tweezers be used for in a first-aid kit?

A. To remove objects from the eye

B. To remove a splinter from the hand

C. To pull back skin from a wound

D. To set a stress fracture
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Konner Franco
Bambi is walking along the train tracks when he suddenly notices a fast approaching train and freezes in his tracks like a deer in headlights. IF the 1000kg train collides with Bambi at a speed of 8 m/s, and Bambi, who weighs 75kg, gets stuck to the front of the train, how fast will the train and Bambi continue to move after the collision
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Guest
How does knowing the planets orbit the sun relate to today
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Ayanna Fuentes
A ship sends out a pulse of sound and receives an echo back one second later. If the water is 750m deep, what is the speed of sound in water?
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Guest
Yusef is doing an experiment to find out how the amount of sunlight affects the growth of a seedling what is the variable in yisef experiment
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Gaven Blair
A race car completes the final lap of a race on a 2-kilometer circular track. At the start of the lap, it crosses the line at 60 meters/second. It completes the lap 28.57 seconds later, crossing the line at 85 meters/second. Calculate the displacement and average acceleration of the car within the span of 12 seconds.
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