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zimovet [89]
3 years ago
13

Formula for calculating work done in machines ​

Physics
1 answer:
Archy [21]3 years ago
7 0

Answer:

force×distance

Explanation:

i think that's the answer and it could also be expressed as m×g×d

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How do light travels
Leni [432]

Answer:

subway

Explanation:

︎ ︎︎ ︎︎ ︎︎ ︎︎ ︎︎ ︎︎ ︎︎ ︎︎ ︎

7 0
3 years ago
A circuit with a 60 V battery, a 7 Ω resistor, a resistor with 0.2 A across it, and another 7 Ω resistor in series. What is the
skelet666 [1.2K]

Answer:

28.6 ohm

Explanation:

there is a 3rd resistor in series. voltage drop across the resistors will be equal to 60v

7*.2+7*.2 +.2x = 60

2.8+.2x = 60

.2x = 57.2

x = 28.6

8 0
2 years ago
In a physics experiment, a ball is released from rest, and it falls toward the ground. The timer was not paying attention but es
tigry1 [53]

Answer:

(A) –14m/s

(B) –42.0m

Explanation:

The complete solution can be found in the attachment below.

This involves the knowledge of motion under the action of gravity.

Check below for the full solution to the problem.

4 0
4 years ago
Do you think that rubbing two pieces of woods together would have more or less friction than wood rubbing against smooth metal ?
jek_recluse [69]

I think rubbing two pieces of woods together will have more friction than wood rubbing against a smooth metal.

<u>Explanation:</u>

The friction offered by surfaces has a great role in deciding the ease of movement of objects along the surface.

The friction of the surface depends upon its roughness. Rough surfaces offer greater friction than smooth surfaces.

In this question wooden pieces have greater friction than that of smooth metal. So rubbing two wooden pieces together will have greater friction than rubbing a wooden piece against a smooth metal.

5 0
4 years ago
What are some of the differences between solids, liquids, and gases?
9966 [12]

Answer:

SOLIDS                                     LIQUIDS  

Have a definite shape.        Don't have a definite shape.

Have a definite mass.         Have a definite mass.

Have a definite volume.       Have a definite volume.

GASES

Have a definite mass.

Don't have a definite volume.

Don't have a definite shape.

DEFINITE- CLEARLY STATED OR EXACT TRUTH ABOUT A FACT.

Explanation:

7 0
3 years ago
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