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Ilia_Sergeevich [38]
3 years ago
13

What are all the stars made up of?

Physics
1 answer:
katrin2010 [14]3 years ago
6 0
Hydrogen, hope I helped.
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A horse of mass 242 kg pulls a cart of mass 224 kg. The acceleration of gravity is 9.8 m/s 2 . What is the largest acceleration
Rufina [12.5K]

To solve this problem it is necessary to apply the concepts related to Newton's second Law and the force of friction. According to Newton, the Force is defined as

F = ma

Where,

m= Mass

a = Acceleration

At the same time the frictional force can be defined as,

F_f = \mu N

Where,

\mu = Frictional coefficient

N = Normal force (mass*gravity)

Our values are given as,

m_h = 242 kg\\m_c = 224 kg\\\mu = 0.894\\

By condition of Balance the friction force must be equal to the total net force, that is to say

F_{net} = F_f

m_{total}a = \mu m_hg

(m_h+m_c)a = \mu*m_h*g

Re-arrange to find acceleration,

a= \frac{\mu*m_h*g}{(m_h+m_c)}

a = \frac{0.894*242*9.8}{(242+224)}

a = 4.54 m/s^2

Therefore the acceleration the horse can give is 4.54m/s^2

3 0
3 years ago
Can anyone help me plz I m confused with this last question?
Gemiola [76]

Answer:

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Explanation:

8 0
3 years ago
Which law represent a balanced chemical equation?
givi [52]
The law<span> of conservation of mass applies in all </span><span>chemical equations</span>
3 0
3 years ago
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Mitch holds a pumpkin at waist level. How can he add potential energy to the pumpkin?
avanturin [10]

Answer:

raise it as high as he can

Explanation:

4 0
3 years ago
Is there ever a situation where an ant will have more momentum than an elephant? Explain why or why not?
Mariulka [41]

Answer:

Yes

Explanation:

The momentum of an object is given by:

p=mv

where

m is the mass of the object

v is the velocity of the object

We know that an elephant has a mass much larger than the mass of an ant. However, we see that the momentum of the animal also depends on its velocity.

If the elephant is at rest, its velocity is zero:

v = 0

so its momentum is also zero:

p = 0

And therefore, an ant which is moving (so, non-zero speed) can have more momentum than an elephant, if the elephant is at rest.

6 0
2 years ago
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