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Karolina [17]
3 years ago
8

Unit 2 Lesson 7 Portfolio for physics

Physics
1 answer:
madam [21]3 years ago
4 0
If two charges are moved so that the distance between them is reduced
by half, then the forces between them become 4 times as strong.
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Long Shore Drift is the ...
azamat

Answer: D. movement of material along a coast by waves that approach at an angle to the shore.​

Explanation:

Longshore drift is also referred to as the littoral druft and it means the sediment that is moved by the longshore current.

Longshore drift is the movement of material along a coast by waves which approach at an angle to the shore but then recede down the beach.

Therefore, the correct option is D.

5 0
3 years ago
A 1.34 kg ball is connected by means of two massless strings, each of length L = 1.70m, to a vertical, rotating rod. The strings
Dennis_Churaev [7]
I think it’s B I’m so right
3 0
3 years ago
A man standing on a bridge throws a stone horizontally with a speed of 20m/s. The stone hits the water below 3 seconds later. Ho
SpyIntel [72]
 <span>h = 1/2 * g t^2 
= 1/2 * 9.8 * 3^2 
= 44.1 m 

d = vx * t = 20 * 3 = 60 m 
Ans: 44.1 m, 60 m </span>
4 0
3 years ago
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Although you can see the pencil, it appears broken in the glass of water. This is because
Likurg_2 [28]
Hello,

Although you can see the pencil, it appears broken in the glass of water. This is because <span>electromagnetic waves travel at different speeds through different media.

Mark brainliest if helped!</span>
8 0
4 years ago
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Suppose a certain battery has an internal emf of 9.00 V but the potential difference across its terminals is only 80.0 % of that
Rudiy27

Answer:

1140.48\times 10^{-6}J

Explanation:

We have given that the battery has an internal emf of 9 volt

So E = 9 volt

Capacitance C=44\mu F=44\times 10^{-6}F

It is given that on the terminal voltage is only 80% of potential difference

So V = 0.8×9 = 7.2 volt

We know that energy stored in the capacitor is given by

E=\frac{1}{2}CV^2=\frac{1}{2}\times 44\times 10^{-6}\times 7.2^2=1140.48\times 10^{-6}J

8 0
3 years ago
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