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Elena-2011 [213]
4 years ago
14

If 2000 kg cannon fires 2 kg projectile having muzzle velocity 200 m/s then the KINETIC ENERGY of the CANNON will be ("E4" means

"*10^4") *
1 point
4 J
40 J
400 J
None of the above
Physics
2 answers:
Alex4 years ago
7 0
40 j would be your answer
lilavasa [31]4 years ago
6 0

Answer:

M V = m v        conservation of momentum (Caps-cannon  Small-projectile)

V = m / M * V = 2 / 2000 * 200 m/s = .2 m/s    recoil velocity of cannon

KE = 1/2 M V^2 = 2000 / 2 kg * (.2 m/s)^2  = 40 kg m^2/s^2 = 40 J

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The answer would be c 
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3 years ago
Other than temperature, which property also has an effect on the rates of chemical reactions?
PSYCHO15rus [73]

Other than temperature, the property that also has an effect on the rates of chemical reactions is the concentration of the reactants. The correct answer is B

The rate of chemical reaction means how chemical react with respect to time or as a function of time. The rate of chemical reaction tells us the speed or how fast chemicals react.

There are many factors that can affect the rate of chemical reaction. Temperature is one of them. Increase in temperature will increase the rate at which chemical react.

The color of reactants, solubility of reactants and volume of reactants have nothing to do with the rate of chemical reaction.

Other than temperature, the property that also has an effect on the rates of chemical reactions is the concentration of the reactants.

Other factors affecting the rate of chemical reaction are:

  • the physical state of the reactants
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Therefore, the correct answer is option B

Learn more about chemical reaction here: brainly.com/question/11231920?source=archive

8 0
3 years ago
Carbon dioxide is released into the atmosphere by _____.
loris [4]
It is released in the atmosphere by chemicals 
3 0
3 years ago
Read 2 more answers
The question is in the attachment. ​
sammy [17]

Answer:

Correct answer:  Yes, with acceleration a = 10 m/s²

Explanation:

By definition acceleration is equal.

a = ΔV / Δt = (V₂ - V₁) / (t₂ - t₁)

a = (10 - 0)/ (1 - 0) = (20 - 10)/ (2 - 1) = ........ (50 - 40)/ (5 -4) = 10 m/s²

a = 10 m/s²

God is with you!!!

5 0
4 years ago
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stealth61 [152]

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Explanation:

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4 years ago
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