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julia-pushkina [17]
3 years ago
8

An atom has seven protons, eight neutrons, and six electrons. What type of electrical charge does it possess?

Physics
1 answer:
Crank3 years ago
7 0

Answer:

positive

Explanation:

No. of positive charge= 7

No.of negative charge = 6

so 7 - 6 = 1 positive charge

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Answer:

First one, third one, and fourth one

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The vertical height of an ocean wave from a crest to a trough is 10 meters. What is the amplitude of the ocean wave?
natima [27]

The amplitude of the wave would be 5 meters.
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A child bounces a 60 g superball on the sidewalk. The velocity change of the superball is from 22 m/s downward to 15 m/s upward.
fgiga [73]

complete question:

A child bounces a 60 g superball on the sidewalk. The velocity change of the superball is from 22 m/s downward to 15 m/s upward. If the contact time with the sidewalk is 1/800 s, what is the magnitude of the average force exerted on the superball by the sidewalk

Answer:

F = 1776  N

Explanation:

mass of ball = 60 g = 0.06 kg

velocity of downward direction = 22 m/s = v1

velocity of upward direction = 15 m/s = v2

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Linear momentum of a particle with mass and velocity is the product of the mass and it velocity.

p = mv

When a particle move freely and interact with another system within a period of time and again move freely like in this scenario it has a definite change in momentum. This change is defined as Impulse .

I = pf − pi = ∆p

F =  ∆p/∆t  =  I/∆t

let the upward velocity be the positive

Δp =  mv2 - m(-v1)

Δp =  mv2 - m(-v1)

Δp = m (v2 + v1)

Δp = 0.06( 15 + 22)

Δp = 0.06(37)

Δp = 2.22 kg m/s

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F =  ∆p/∆t

F =  2.22/0.00125

F = 1776  N

4 0
3 years ago
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I would not agree with her since reflection and refraction happens only when waves hit an object. When, waves meet it is either it experiences constructive or destructive interference. Hope this answers the question. Have a nice day.
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Anna [14]

A compound

Explanation:

A compound machine is the combination of two or more simple machines.

An example is bicycle.

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  • A compound machine is a combination of these simple machines.

learn more:

lever brainly.com/question/5352966

#learnwithBrainly

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