3 years ago

The light is most intense where it strikes Earth _______ to its surface.

1 answer:

amm18123 years ago

4 0

Answer: The sun's rays strike Earth's surface most directly at the equator. This focuses the rays on a small area. Because the rays hit more directly, the area is heated more.

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A uniform electric field, with a magnitude of 370 N/C, is directed parallel to the positive x-axis. If the electric potential at

dem82 [27]

Answer:

$\Delta U = 0.2072 J$

Explanation:

Potential difference between two points in constant electric field is given by the formula

$\Delta V = E.\Delta x$

here we know that

$E = 370 N/C$

also we know that

$\Delta x = 2.1 - 1.9 = 0.2 m$

now we have

$\Delta V = 370 (0.2) = 74 V$

now change in potential energy is given as

$\Delta U = Q\Delta V$

$\Delta U = (2.80 \times 10^{-3})(74)$

$\Delta U = 0.2072 J$

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4 years ago

an object is moving with a speed of 35 m/s and has a kinetic energy of 1500 J, what is the mass of the object?

Elena-2011 [213]

You'd use the equation kinetic energy=mass*0.5*speed^2
So you'd rearrange this to get mass =kinetic energy /0.5 *speed^2
Which is mass= 1500J/0.5*35^2
=2.44897959183673469........kg

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3 years ago

A change in temperature causes a change in density. true or false?

zvonat [6]

True a change in temperature can cause a change in density.

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What does an atom look like under an electron microscope?

ratelena [41]

If you look at a atom under a electron microscope you would use it

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