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tresset_1 [31]
3 years ago
11

A group of letters used at the start of a word to change its meaning?

Physics
1 answer:
Diano4ka-milaya [45]3 years ago
6 0

Answer:

prefix

Explanation:

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The model represents a fluorine (F) atom. What is the mass of the atom?
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Answer:

19

Explanation:

The mass of an atom is found in the nucleus: number of protons + number of neutrons; 9 + 10 = 19

The mass number of fluorine is 19

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Coffee or certain cola drinks can be used to test the effect of __________ on reaction time. What drug completes the sentence?
natulia [17]

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"caffeine"    both products contain this compound

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2 years ago
A student uses a spring to launch a marble vertically in the air. The mass of the marble is
Fed [463]

Answer:

the maximum height reached by the marble is 11.84 m.

Explanation:

Given;

mass of the marble, m = 0.02 kg

extension of the string, x = 0.08 m

force applied to the string, F = 58 N

Apply the principle of conservation of energy;

elastic potential energy = gravitational potential energy

¹/₂fx = mgh

h = \frac{Fx}{2mg} \\\\h = \frac{58 \ \times \ 0.08}{2 \ \times \ 0.02 \ \times \ 9.8} \\\\h = 11.84 \ m

Therefore, the maximum height reached by the marble is 11.84 m.

5 0
3 years ago
Light wands are small tubes that can be used to give off light without electricity or fire.
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<span>c.the chemical energy of the fluids inside the wand</span>
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Answer:

ZAMN

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