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3 years ago

What is the momentum of a ten ton truck which is sitting still?

Physics

1 answer:

ANTONII [103]3 years ago

7 0

The momentum of the truck is given by:

p = mv

p = momentum, m = mass, v = velocity

There isn't too much work to do here; the truck is at rest, therefore its velocity is 0. This means the product of m and v is 0, giving the momentum as 0.

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Find the relation, time velocity graph : acceleration of an object, time position graph : ?

Anit [1.1K]

Answer:

In a time-position graph (s-t graph):

slope = velocity

In a time-velocity graph (v-t graph):

slope = acceleration

area under graph = change in displacement (distance travelled)

In a time-acceleration graph (a-t graph):

area under graph = change in velocity

8 0

3 years ago

Find the momentum of a 500,000 kg train that is stopped on the tracks?

Aneli [31]

Answer:

The answer should be A) 0m/s

Explanation:

It is stopped on the train tracks therefore it is not moving.

Please tell me if I am wrong because I'm not 100% sure on this. Hope it's right and that it helped you.

5 0

3 years ago

Which of the following causes a current in an electrical circuit?

Len [333]

C. because you need voltage in a circuit to cause current.

8 0

4 years ago

Which chemical reaction shows photosynthesis

djverab [1.8K]

Answer: Option (a) is the correct answer.

Explanation:

Photosynthesis is defined as a chemical process in which plants tend to make their own food in the presence of sunlight, water and carbon dioxide.

During this process, product formed by the plants is glucose and oxygen.

The chemical reaction equation for photosynthesis is as follows.

$6CO_{2} + 6H_{2}O + \text{Sunlight} \rightarrow C_{6}H_{12}O_{6} + 6O_{2}$

Therefore, we can conclude that out of the given options the correct equation is as follows.

$\text{water + carbon dioxide + sunlight} \rightarrow \text{oxygen + glucose}$

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3 years ago

a 20 A fuse is connected in series with a circuit containing a 240 V source. What is the minimum resistance required to prevent

kipiarov [429]

Answer:

12 ohms

Explanation:

you just divide 240 and 20

240 V/ 20 A = 12 ohms

7 0

3 years ago