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Alex Ar [27]
3 years ago
12

Please in the name of god help me guys.

Physics
2 answers:
zepelin [54]3 years ago
3 0

1. D: the ability to cause a change or do work

The others dont make sense for energy.

2. C: Lamp

A lamp uses the electric current to light up a room, or area.

3. B: foil will bend away

The same charges repel each other that is why a magnet is repelled by the same pole of another magnet.

4. A: Sound

You can’t hear light or any of the other options.

5. A: gravity

Gravity is a force of nature that pulls on everything.

6. C: static electricity

The opposite charges stick to each other, a battery again is an example of this.

7. B: a copper nail

Metal is one of the best electric conductors.

8. C: closed circuit

This is because if a circuit is closed the electricity flows through perfectly but for example an open one would not work or it would leak energy.

Hope this helps

bezimeni [28]3 years ago
3 0
This is just a tip to you. If you actually look at the book that teachers assign to you they will have the answers to everything in this. I know this because i was failing horribly until i actually picked up a book and read through it. They give you the answers in the book broski. Not trying to be mean in any way
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Which occurs when a wave is reflected?
dmitriy555 [2]

Answer: The wave can flip upside down.

Reflection is the bending of a wave when it cannot pass through. For example, plain mirrors which are flat, a ray of light hits the mirror and is reflected from the mirror since it cannot pass through  

When reflection occurs the speed and frequency of the wave does not change but the wave is flipped upside down.

The speed does not change because speed is affected by the change in medium the frequency also remains the same since the energy of the wave does not change.


3 0
3 years ago
Read 2 more answers
I can't seem to get the right angular acceleration and also not sure how to do part b. Help will be much appreciated.
Tcecarenko [31]

Answer:It’s 5 I believe

Explanation: it says to round to the nearest thousandths, so it’ll be 5.

8 0
3 years ago
A tetrahedron has an equilateral triangle base with 25.0-cm-long edges and three equilateral triangle sides. The base is paralle
djverab [1.8K]

Answer:

a. 7.046 Nm²/C

b. 2.348 Nm²/C

Explanation:

Data given:

Base of equilateral triangle = 25.0 cm = 0.25 m

Strength of electric field = 260 N/C

In order to find the electric flux we first have to find out the area of triangle.

Area of triangle = \frac{\sqrt{3} }{4} a^{2}

                         = \frac{\sqrt{3} }{4} (0.25)^{2}

                         = 0.0271 m³

Lets find electric flux,

      Electric Flux = E. A

                          = 260×0.0271

                          = 7.046 Nm²/C

Now we can find the electric flux through each of the three sides.

Electric flux through three sides = \frac{7.046}{3}

                                                = 2.348 N m²/C

       

3 0
3 years ago
A fixed electric space heater wired by a cable with an ampacity of 30 A should draw a maximum current of A. 30 A. B. 24 A. C. 15
Nookie1986 [14]

Answer: The correct answer is option (A).

Explanation

Ampacity is defined as the maximum amount of the current carried by the conductor continuously without exceeding its temperature rating.

The ampacity of the wire of the heater is 30 A .And this means that wire is capable of conducting current of maximum amount of 30 Ampere through it without exceeding its temperature rating.

Hence, the correct answer is option is (A).

7 0
3 years ago
Lucas left a metal bowl and a wooden bowl outside overnight. The next morning, he picked up the bowls to bring them inside. He n
kipiarov [429]

Answer: C. Metal transfers heat away from the skin by conduction, creating the sensation of coolness.

Explanation: The skin releases heat into the metal bowl since there is a difference in temperature between the two objects. So heat is taken away from the hand abd transfers into the metal bowl by conduction creating a cooler sensation.

8 0
3 years ago
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