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Zepler [3.9K]
3 years ago
15

Give several examples of a mechanism, machine or system that has two

Physics
1 answer:
blsea [12.9K]3 years ago
5 0
Any large factory that takes multiple machines to manufacture a singular product.
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A bullet of mass 0.02 kg is fired by a gun of mass 20 kg. If the speed of the bullet is 150 ms -1,
wel

Answer:

0.15m/s

Explanation:

Momentum p = mv, must be conserved if there are no external forces acting on the system. Since there are only internal forces acting between the bullet and the gun, momentum must be conserved.

The total momentum before the gun is fired:

p = m_{bullet}v_{bullet} + m_{gun}v_{gun} = 0.02 * 0 + 20 * 0 = 0

The total momentum after the gun is fired, must also be zero:

p = m_{bullet}v_{bullet} + m_{gun}v_{gun} = 0.02 * 150 + 20 * v_{gun} = 0

Solving for v:

v_{gun}=-\frac{m_{bullet}v_{bullet}}{m_{gun}} = -\frac{0.02*150}{20} =-0.15

The recoil speed is the absolute value of the velocity.

7 0
3 years ago
How should you move a bar magnet to cause an electric current to flow in a
Nostrana [21]

I got A it was the same question to. Guess its a different answer for every one

7 0
3 years ago
Where is oceanic crust being formed?
Sever21 [200]
Oceanic crust is being formed it is because of the tectonic plates. Tectonic plates work because of volcanic eruption every time it will erupt the tectonic plates underground will have more pressure on magma, then below there will be a volcano thats why their is a volcano in ocean. The heat rises up then it will open, thats what we call divergent bounderies then their will be earthquakes form. Then another plate opens up and the crust is going down, it will stop if the volcano stops erupting because there is more lava left in volcano then it will go underwater and thats why oceanic crust is being formed.

#CarryOnLearning

Butbot na dili na tinuod ga timala ra ko ana
3 0
3 years ago
Which part of the female reproductive system produces ova?
vovangra [49]
A would be the best answer beacuse
Ovaries - small, oval-shaped glands that are located on either side of the uterus. The ovaries produce eggs (ova - an ovum is one egg, ova means multiple eggs.) The ovaries also produce the main female sex hormones which are released into the bloodstream.
5 0
3 years ago
Read 2 more answers
A 91.1 kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity of 1.73 r
KIM [24]

Answer:

\omega_f = 1.08 rad/s

Explanation:

As we know that there is no external torque on the system of platform, banana and the monkey

so the angular momentum of the system will remains conserved

so here we can say

L_i = L_f

I_o\omega = (I_o + m_1r_1^2 + m_2r_2^2)\omega_f

here we know that

I_o = \frac{1}{2}mR^2

I_o = \frac{1}{2}(91.1)(1.61)^2 = 118.1 kg m^2

m_1 = 9.41 kg

r_1 = \frac{4}{5}(1.61) = 1.29 m

m_2 = 21.1 kg

Now from above equation

118.1(1.73) = (118.1 + 9.41(1.29^2) + 21.1(1.61^2))\omega_f

118.1(1.73) = 188.45\omega_f

\omega_f = 1.08 rad/s

8 0
3 years ago
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