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Tom [10]
3 years ago
8

The density of balsa wood is 0.170 g/cm3.  What is the mass if the volume is 12.0 mL?

Physics
1 answer:
Harlamova29_29 [7]3 years ago
8 0

Answer:

<h3>The answer is 2.04 g</h3>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

density = 0.17 g/cm³

1 mL = 1 cm³

12 mL = 12 cm³

So we have

mass = 0.17 × 12

We have the final answer as

<h3>2.04 g</h3>

Hope this helps you

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A person holding a 15.0 kg containing one 50.0 g bullet is riding on a train that is traveling at 75.0 km/h east. If the man fir
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Answer:

The velocity of the gun relative to the ground is 19.66 m/s

Explanation:

Given data,

The mass of the gun, M = 15.0 kg

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                                           = 20.83 m/s

The velocity of bullet relative to train, V' = 350 m/s

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                                                                       = 370 m/s

According to the law of conservation of momentum,

                                Mv' + mV' = 0

                                   v' = -\frac{mV'}{M}

                                   v' = -\frac{0.050\times 350}{15}

                                      = -1.17 m/s

Therefore, the velocity of the gun with,

                                   v₀ = V + v'

                                        = 20.83 - 1.17

                                         = 19.66 m/s

Hence, the velocity of the gun relative to the ground is 19.66 m/s

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