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irga5000 [103]
3 years ago
13

A night-light uses 3 W.If the voltage is 120 V, what is the current? A.0.025A B.40 A C.360A D.0.25A

Physics
1 answer:
Tomtit [17]3 years ago
6 0
The answer to this question is A. 



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Two illustrations of transverse waves. The one with shorter crests is labeled A. The wave with taller crests is labeled B. Which
suter [353]

The largest distance moved by a particle of a vibrating body from its equilibrium position is called amplitude. Wave B has higher energy because wave it has a higher amplitude.

<h3>What is the amplitude of a wave?</h3>

The largest distance moved by the particles on either side of the mean position is the amplitude of a wave.

The maximum height of either crest or trough from its equilibrium position is called amplitude.

Hence Wave B has higher energy because it has a higher amplitude.

To learn more about the amplitude of a wave refer to the link;

brainly.com/question/9351212

7 0
2 years ago
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How do you know that Earth is affected by the gravitational pull of the sun ? Explain how you would be affected if you were able
Assoli18 [71]

Answer:

The Sun's gravity pulls on the planets, just as Earth's gravity pulls down anything that is not held up by some other force and keeps you and me on the ground.

Explanation: Newton realized that the reason the planets orbit the Sun is related to why objects fall to Earth when we drop them. I am so sorry if I get this wrong, I'm in 5th grade! ♥

6 0
3 years ago
a car has a velocity of 10ms-1. it accelerates at 0.2 ms-2 for half minute find the total distance travelled and final velocity
Readme [11.4K]

Answer:

Final velocity = 16 m/s

Total distane travelled = 390 m

Explanation:

We can use equation of motion to solve this:

v = u + at \\ v = 10 + 0.2(30) \\ v = 16 {ms}^{ - 1}

s = ut +  \frac{1}{2} a {t}^{2}  \\ s = 10(30) +  \frac{1}{2} (0.2) {(30)}^{2}  \\ s = 390m

5 0
3 years ago
Select the correct answer. In a given chemical reaction, the energy of the products is greater than the energy of the reactants.
ioda
B. Energy is released in the reaction... just looked it up!
3 0
3 years ago
You are a detective investigating why someone was hit on the head by a falling flowerpot. One piece of evidence is a smartphone
umka21 [38]

Answer:

0.37 m

Explanation:

Given :

Window height, h_1 = 1.27 m

The flowerpot falls 0.84 m off the window height, i.e.

h_2 = (1.27 x 0.84 ) m in a time span of $t=\frac{8}{30}$   seconds.

Assuming that the speed of the pot just above the window is v then,

h_2=ut+\frac{1}{2}gt^2

$(1.27 \times 0.84) = v \times \left( \frac{8}{30} \right) + \frac{1}{2} \times 9.81 \times \left( \frac{8}{30} \right)^2$

$v=\left(\frac{30}{8}\right) \left[ (1.27 \times 0.84) - \left( \frac{1}{2} \times 9.81 \times \left( \frac{8}{30 \right)^2 \right) \right]}$

$v= 2.69$ m/s

Initially the pot was dropped from rest. So,  u = 0.

If it has fallen from a height of h above the window then,

$h = \frac{v^2}{2g}$

$h = \frac{(2.69)^2}{2 \times 9.81}$

h = 0.37 m

3 0
3 years ago
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