Physics » Page 52

Physics

Kenny Hartman

The force between a 0.001 C is 200 N. What is the distance between them

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Physics

Macie Clements

There is a current of 0.99 a through a light bulb when its connected to a 9.7 v battery what is the resistance of the light bulb

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Physics

Danika Farmer

After school, several students skateboard at the nearby park. Your best friend, Erwin, is a good skateboarder and happens to fall when attempting a fancy trick. After falling, Erwin gets back up and starts repeating the trick over and over again. How would a cognitive psychologist interpret Erwin getting back up and repeating the trick many times?

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Physics

Kaliyah Bolton

A Hall probe serves to measure magnetic field strength. Such a probe consists of a poor conductor 0.103 mm thick, whose charge-carrier density is 1.11 * 1025 m-3. When a 2.89-A current flows through the probe, the Hall voltage is measured to be 3.47 mV. What is the magnetic field strength?

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Physics

Richard Neal

What is the mass of a basketball that is shot with 12N of force at an acceleration of 4m/s2?

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Physics

Myles Mccann

What is transferred by electromagnetic waves?

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Physics

Marlie

Which will change if you turn up a radios volume

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Physics

Janessa Fleming

If the power developed in an electric circuit is doubled the energy used in one second is

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Physics

Luciana Moss

A substance has a density of 13.5 g/cm3. What is the volume of a 50 g block of this substance?

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Physics

Gavyn Humphrey

Select all of the answers that apply.

Which statements are true regarding the scientific evidence supporting the big bang theory?

Researchers found cosmic microwave background radiation, which is a heat imprint left over from the big bang.

Quasars have been observed exploding and expanding from a single, hot, dense singularity.

A primordial form of helium gas was found by the Endeavor space shuttle.

A redshift of light emitted by stars and galaxies indicates the universe is expanding.

Redshift and blueshift of light emitted by stars and galaxies indicate that universe is expanding and contracting.

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Physics

Jazlyn Velasquez

How are magnetic poles and electrical charges similar? A. Their same forces repel each other, and their opposite forces attract each other. B. Their same forces attract each other, and their opposite forces repel each other. C. Magnetic force is equal to electric force. D. Only electric charges are moving. E. Magnetic poles can switch positions.

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Physics

Liberty Powell

As part of his meal, a workman has a cup containing a hot drink.

In order to keep the drink hot whilst he eats the rest of his meal, he covers the cup, as shown in

the figure.

Which sources of energy loss does this action reduce? Tick two boxes.

convection from the surface of the liquid

evaporation from the surface of the liquid

conduction through the cup

radiation from the surface of the cup

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Physics

Keith Joyce

When energy is transformed, the amount of usable energy?

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Physics

Frankie Whitehead

If an object weighs 39.2 n on earth, what is its mass

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Physics

Bradyn Houston

What happens when pressure is applied to a solid.

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