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lawyer [7]
3 years ago
14

1. Which of the following is

Physics
1 answer:
k0ka [10]3 years ago
3 0

Answer:

B

Explanation:

Water is essential to most bodily functions.

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If you were on a rocket traveling at 99.9% of the speed of light: if someone felt like 1 year had passed on earth how much time
kirill [66]
One year it just feels like less because you’re going so fast
5 0
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Satellite A orbits the earth at a height 3.00 times the earth's radius. Satellite B orbits the earth at a height 2.00 times the
dsp73
The correct answer to this question is this one: "<span>B) 1 to 3√(3/2)^2 "
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The fact that </span>Satellite A orbits the earth at a height 3.00 times the earth's radius and  Satellite B orbits the earth at a height 2.00 times the earth's radius. The ratio of the of the period of Satellite B to the period of Satellite A is 1 :<span> 3√(3/2)^2 
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7 0
4 years ago
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The one star that does not appear as a small point of light is called
seraphim [82]

The sun. lol. It is closer to Earth, therefore bigger to us, and not just a small point of light.

5 0
3 years ago
The stoplight had just changed and a 2100 kg Cadillac had entered the intersection, heading north at 3.2 m/s , when it was struc
elena55 [62]

Explanation:

It is given that,

Mass of the Cadillac, m_1=2100\ kg

Speed of Cadillac, v_1=3.2\ m/s (towards north)

Mass of Volkswagen, m_2=1100\ kg

The cars stuck together and slid to a halt, leaving skid marks angled 35 degrees north of east.

According to the law of conservation of momentum,

The momentum along x axis, m_1v_1=(m_1+m_2)\ usin35............(1)

The momentum along y axis, m_2v_2=(m_1+m_2)\ ucos35...........(2)

From equation (1) and (2) it is clear that,

\dfrac{m_1v_1}{m_2v_2}=tan35

v_2=\dfrac{m_1v_1}{m_2\ tan35}

v_2=\dfrac{2100\times 3.2}{1100\times \ tan35}

v_2=8.72\ m/s

So, the Volkswagen going just before the impact is 8.72 m/s. Hence, this is the required solution.

6 0
3 years ago
Allison wants to calculate the denisty of a rock. To do this, what tools will she need to measure
fredd [130]

Answer:

Explanation:

Allison can measure the mass of the rock by using a scale. An electronic beam balance will be able to give her the mass of the rock to a fairly accurate degree.

To go about measuring the volume of the rock, an indirect approach has to be adopted since the rock is not regular in shape.  Allison would have to adopt a principle that explains that the volume a solid body displaces when immersed in a pool of liquid, is directly equal to the volume of the solid itself.

This means that if the stone is placed in a beaker of water containing an already measured volume of water, the increase in the volume of the water when the stone is immersed is equivalent to the volume of the stone.

6 0
3 years ago
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