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Viefleur [7K]
3 years ago
5

Explain the meaning of the name "black hole". This should be 2-3 sentences. Hint- relate this to density and how it effects thin

gs. *
Physics
1 answer:
Rina8888 [55]3 years ago
8 0
A black hole is a very dense, massive, body, left behind after a large star explodes. It has a huge gravity which will attract everything that comes near it, even light!
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A student places his hand in front of a plane mirror as shown in
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Answer:

A:

Explanation:

Plane mirrors always form virtual images meaning although the object appears to be in the other side of the mirror the light rays actually originate in front of it. The image is inverted meaning that when you lift your right hand it shows your left hand rising. and with true orientation.

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Explain why a law is accepted as fact, but a theory is not
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Because, they have a strong argument regarding it and, the judges, so it makes sense of what the society thinks, and what they are representing.
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3 years ago
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What type of reaction feels cold to the touch?
IRISSAK [1]

Answer:

Explanation:

An endothermic reaction absorbs heat, so it will be cold to touch.

8 0
3 years ago
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8 0
3 years ago
Find the range of a projectile launched at an angle of 30° with an initial velocity of 20m/s.​
Tems11 [23]

Answer:

<em>The range is 35.35 m</em>

Explanation:

<u>Projectile Motion</u>

It's the type of motion that experiences an object projected near the Earth's surface and moves along a curved path exclusively under the action of gravity.

Being vo the initial speed of the object, θ the initial launch angle, and g=9.8m/s^2 the acceleration of gravity, then the maximum horizontal distance traveled by the object (also called Range) is:

\displaystyle d={\frac  {v_o^{2}\sin(2\theta )}{g}}

The projectile was launched at an angle of θ=30° with an initial speed vo=20 m/s. Calculating the range:

\displaystyle d={\frac  {20^{2}\sin(2\cdot 30^\circ )}{9.8}}

\displaystyle d={\frac  {400\sin(60^\circ )}{9.8}}

d=35.35\ m

The range is 35.35 m

7 0
3 years ago
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