4 years ago

Which does not use a wheel and axle?

1 answer:

4 0

A saw, because wheels and or axles are present in all of the other items. A saw is a wedge, this it does not contain axles or wheels.

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Which one of these exercises gets your heart pumping? *

Nookie1986 [14]

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Explanation:

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3 years ago

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a charge of 7.2x10^-5C is placed in an Electric field with a strength of 4.8x10^5N/C. if the Electric potential energy of the ch

Alecsey [184]

Answer:

$d= 2.2 m$

Explanation:

The data given in the question is

Charge : q = $7.2 \times 10^{-5} C$

Electric field Strength : E = $4.8 \times 10^{5} N/C$

Electrical potential Energy : U = $75J$

Let, the distance be "d"

So, the formula for Electrical potential energy is

$U= q \times E \times d$

Simplified formula for distance become

$d=\frac{U}{q \times E}$

Now , insert the value

$d=\frac{75 J}{7.2 \times 10^{-5}C \times 4.8 \times 10^5 N/C}$

or,

$d=2.17 m$

Rounding off

$d= 2.2 m$

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3 years ago

One clue we can observe that means a chemical reaction has occurred is the formation of light. What is one chemical reaction you

dimaraw [331]

Answer:

There are five signs of a chemical change:

Color Change.

Production of an odor.

Change of Temperature.

Evolution of a gas (formation of bubbles)

Precipitate (formation of a solid)

Explanation:

I just went ahead and gave you the five signs of chemical change hoped it helped

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What is mercury barometer

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A mercury barometer is a device that is used to measure atmospheric pressure at a location. :)

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3 years ago

What is velocity in science

katovenus [111]

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Velocity is the rate at which the position changes. The average velocity is the displacement or position change (a vector quantity) per time ratio.

Hope this helps! ^-^

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