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saul85 [17]
3 years ago
10

Density differences in different materials are able to change the _____________ of a wave.

Physics
1 answer:
AleksAgata [21]3 years ago
8 0

Answer:

speed

Explanation:

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romanna [79]

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3 0
3 years ago
What is the electric force acting between two charges of 0.0072 C and -0.0060 C that are 0.0040 m apart?
telo118 [61]
Answer:
F = -2.4 * 10¹⁰ N

Explanation:
To get the electric force between two charges, we would use Coulomb's law which states that:
F = \frac{k * q1 * q2}{d^{2} }

where:
F is the force between the two charges
k is Coulomb's constant = 9 * 10⁹ Nm²/C²
q1 is the first charge = 0.0072 C
q2 is the second charge = -0.006 C
d is the distance between the two charges = 0.004 m

Substitute with the givens in the above formula to get the force between the two charges as follows:
F = \frac{9*10^9*0.0072*-0.006}{(0.004)^2}

F = -2.4 * 10¹⁰ N

Hope this helps :)
8 0
3 years ago
What is one defining feature of a prokaryotic cell
trapecia [35]
A. nucleus
hope this helps if so please mark me brianliest
5 0
3 years ago
a 2.80 kg mass is dropped from a height of 4.50 m. find its potential energy(PE) when it is 3.00 m above the ground.PLEASE HELP
Dennis_Churaev [7]

Answer:

82.3 J

Explanation:

PE = mgh

PE = (2.80 kg) (9.8 m/s²) (3.00 m)

PE = 82.3 J

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4 years ago
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