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3 years ago

You heat a mug of water to make hot chocolate. Which statement best

Physics

1 answer:

Reika [66]3 years ago

8 0

Answer:

Explanation:

As the particles are heated they begin to vibrate.This vibration causes them to bump into each other and hence results in kinetic energy. So as the temperature increases, the particles vibrate more and bump into each other more which would increase kinetic energy.

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which of these types of radiation do you suppose we should fear the most if administered internally? •gamma rays •neutrons •alph

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Alpha particles, because they are the heaviest ones (helium nuclei) and will travel around the body.

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3 years ago

An Ohmic material is one in which its resistance does not depend on the voltage across it or the current within it. In that case

Alexandra [31]

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3 years ago

What is angle between the vectors 2i -3j +K

Gnom [1K]

Answer:

the answer is B

Explanation:

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3 years ago

Inez uses hairspray on her hair each morning before going to school. The spray spreads out before reaching her hair partly becau

Tamiku [17]

Answer:

$7.0\cdot 10^{-13}C$

Explanation:

The magnitude of the electrostatic force between two charged objects is

$F=k\frac{q_1 q_2}{r^2}$

where

k is the Coulomb's constant

q1 and q2 are the two charges

r is the separation between the two charges

The force is attractive if the charges have opposite sign and repulsive if the charges have same sign.

In this problem, we have:

$r=0.070 cm =7\cdot 10^{-4} m$ is the distance between the charges

$q_1=q_2=q$ since the charges are identical

$F=9.0\cdot 10^{-9}N$ is the force between the charges

Re-arranging the equation and solving for q, we find the charge on each drop:

$F=\frac{kq^2}{r^2}\\q=\sqrt{\frac{Fr^2}{k}}=\sqrt{\frac{(9.0\cdot 10^{-9})(7\cdot 10^{-4})^2}{8.99\cdot 10^9}}=7.0\cdot 10^{-13}C$

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3 years ago

PLEASE HELP!!! FIRST IS BRAINLIEST!!!

Verizon [17]

1. A Medium

2. One of these 4, the refractive index of the medium <span>Choose whichever are on the test.

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3 years ago

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