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AlexFokin [52]
3 years ago
10

Dimension of density ​

Physics
1 answer:
Rom4ik [11]3 years ago
8 0

Answer:

See the explanation below.

Explanation:

We know that density is defined as the relationship between mass and volume.

Ro = m/V

where:

m = mass [kg]

V = volume [m³]

Therefore Ro is given in:

[kg/m^{3} ]

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Joey ran at a speed of 18 km/h for a total of 2 hours. How much distance did he<br> cover?
GenaCL600 [577]

Answer:

<h2>36 km</h2>

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8 0
3 years ago
In an arcade game a 0.135 kg disk is shot across a frictionless horizontal surface by compressing it against a spring and releas
ioda

Answer:

v=2.42m/s

Explanation:

We use the energy conservation theorem in order to solve the problem. The energy when the spring is compressed is equal at the energy when the disk leaves the spring:

E_{initial}=E{final}\\E_{k-initial}+E_{p-initial}=E_{k-final}+E_{p-final}\\0+\frac{1}{2}kx^2=\frac{1}{2}mv^2+0

At the beginning the initial energy is totally potential, energy linked to the compressed spring. At the end the energy is totally kinetics

We solve the equation in order to find the speed.

k=162 N/m

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v=x*\sqrt{k/m}=0.07*\sqrt{162/0.135}=2.42m/s

6 0
3 years ago
Nitrogen gas (N2) and hydrogen gas (H2) combine to form ammonia (NH3). Which equation correctly represents this reaction?
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Answer:

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Explanation:

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5 0
4 years ago
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