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MrRissso [65]
3 years ago
14

1. Which of the following equations can be used to directly calculate an object s momentum, p?

Physics
1 answer:
Taya2010 [7]3 years ago
3 0

Answer:

p = mv

Explanation:

The momentum of an object is given by the equation:

p=mv

where

m is the mass of the object

v is the velocity

Since velocity is a vector, it follows that momentum is a vector as well, therefore it has a magnitude and a direction (the same as the velocity).

The SI unit of the momentum is kg \cdot m\cdot  s^{-1}

An important law related to the momentum is the law of conservation of momentum, which states that for an isolated system (= zero net external force on it), the total momentum of the system is conserved.

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A solid cylindrical object has a mass of 2.0 kg, a diameter
omeli [17]

Answer:

I = 0.0025 kg.m²

Explanation:

Given that

m= 2 kg

Diameter ,d= 0.1 m

Radius ,R=\dfrac{d}{2}

R=\dfrac{0.1}{2}

R=0.05 m

The moment of inertia of the cylinder about it's axis same as the disc and it is given as

I=\dfrac{mR^2}{2}

Now by putting the all values

I=\dfrac{2\times 0.05^2}{2}

I = 0.0025 kg.m²

Therefore we can say that the moment of inertia of the cylinder will be  0.0025 kg.m².

4 0
3 years ago
Bumper car A (281 kg) moving
solmaris [256]

use consevation of linear momentum

  • m1v1+m2v2=(M1+M2)V3
  • 281(2.82)+209(-1.72)=(209+281)V2
  • 792.42-359.48=490v3
  • 432.9=490v3
  • V3=0.88m/s
4 0
2 years ago
How many stars are in our solar system?
Annette [7]

Answer:

there are over 100 billion stars in our galaxy.

5 0
3 years ago
What is the prmary source of energy inside of the earth
FromTheMoon [43]
The correct answer is the energy of the sun
8 0
2 years ago
Read 2 more answers
What is the magnitude of a point charge in coulombs whose electric field 51 cm away has the magnitude 2.5 n/c?
Tema [17]

The magnitude of a point charge is 0.189 x 10⁻⁹C.

<h3>Steps</h3>

We have stated that the point charge's electric field is E=2.5 N/C.

Distance from point charge R = 51 cm = 0.51 m

We are aware that the electric field resulting from a point charge is given as E = 1 / 4π∈₀ × Q / R²

so 2.5 = 9 x 10⁹ Q/ 0.68²

The magnitude of a point charge is 0.189 x 10⁻⁹C.

The electric force per unit charge is referred to as the electric field. It is assumed that the field's direction corresponds to the force it would apply to a positive test charge.

From a positive point charge, the electric field radiates outward, and from a negative point charge, it radiates in.

learn more about electric field here

brainly.com/question/14372859

#SPJ4

7 0
2 years ago
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