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ZanzabumX [31]
2 years ago
13

Stars that are not very hot but give off a lot of light are

Physics
2 answers:
melomori [17]2 years ago
6 0

\huge{\textbf{\textsf{{\color{navy}{An}}{\purple{sw}}{\pink{er}} {\color{pink}{:}}}}}

Giants.

  • thanks
  • hope it helps.
MAVERICK [17]2 years ago
3 0

Explanation:

giants are those stars that are not so hot but give a lot of light

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Please help on this one?
koban [17]

Using the given equation:

di = 20.0 * 10.0 / 20.0 - 10.0

di = 200/10

di = 20.0 cm

The answer is A.

6 0
3 years ago
Read 2 more answers
A car has a kinetic energy of 1.9 × 10^3 joules. If the velocity of the car is decreased by half, what is its kinetic energy?
VLD [36.1K]
The initial kinetic energy of the car is
E_1 =  \frac{1}{2}mv_1^2 =  1.9 \cdot 10^3 J

Then, the velocity of the car is decreased by half: v_2 =  \frac{v_1}{2}
so, the new kinetic energy is
E_2 =  \frac{1}{2}mv_2 ^2 =  \frac{1}{2} m ( \frac{v_1}{2} )^2= \frac{1}{2}m \frac{v_1^2}{4}= \frac{E_1}{4}
So, the new kinetic energy is 1/4 of the initial kinetic energy of the car. Numerically:
E_2 =  \frac{1.9 \cdot 10^3 J}{4}=475 J
5 0
3 years ago
The magnitude of the weight of a 3.0 kg object on the surface of the earth is 29 N. True False
madreJ [45]
True

In fact, the weight of an object on the surface of the Earth is given by:
F=mg
where m is the mass of the object and g=9.81 m/s^2 is the gravitational acceleration on Earth's surface. If we use the mass of the object, m=3.0 kg, we find
F=mg=(3.0 kg)(9.81 m/s^2)=29 N
8 0
2 years ago
Which of the following is a form of mechanical energy?
ki77a [65]

Answer:

D. gravitational potential energy

Explanation:

7 0
2 years ago
Ice does not need to melt into liquid water before it can return to the atmosphere as water vapor.
Nuetrik [128]
That only happens when the temperature is below freezing and the air around the ice is dry.
6 0
3 years ago
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