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sveta [45]
3 years ago
6

Which of the following is a metal? Calcium (Ca) Iron (Fe) Sodium (Na) all of these

Physics
2 answers:
ANTONII [103]3 years ago
8 0
Iron (Fe) or at least it can be.

netineya [11]3 years ago
6 0
All of the above are metals
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Two wooden crates rest on top of one another. The smaller top crate has a mass of m1 = 24 kg and the larger bottom crate has a m
marusya05 [52]

Answer:

The sum of all forces for the two objects with force of friction F and tension T are:

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The two equations become:

m₂a = T - m₁a

Solving for a:

a = T / (m₁+m₂) = 2.1 m/s²

2) Using equation(i):

F = m₁a = 51.1 N

3) The maximum friction is given by:

F = μsm₁g

Using equation(i) to find a₁ = a₂ = a:

a₁ = μs*g

Using equation(ii)

T = m₁μsg + m₂μsg = (m₁ + m₂)μsg = 851.6 N

4) The kinetic friction is given by: F = μkm₁g

Using equation (i) and the kinetic friction:

a₁ = μkg = 6.1 m/s²

5) Using equation(ii) and the kinetic friction:

m₂a₂ = T - μkm₁g

a₂ = (T - μkm₁g)/m₂ = 12.1 m/s²

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3 years ago
Which describes one event that causes an eclipse?
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Answer:

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Find the kinetic energy of a 0.1 kg toy truck moving at a speed of 1.1 m/s
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Answer:

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