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Ulleksa [173]
3 years ago
13

1. Two students have volunteered to explore the galaxy in a

Physics
1 answer:
LiRa [457]3 years ago
7 0

Answer:a

Explanation:

I guess

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which statement is a Hypothesis? A: Most of the earthworms moved to the shaded area during experiment. B: If an earthworm is giv
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Answer:

B

Explanation:

It's saying what you think

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Trucks can be run on energy stored in a rotating flywheel, with an electric motor getting the flywheel up to its top speed of 20
Genrish500 [490]

Answer:

The time it can operate between chargins in minutes is

t=102.8 minutes

Explanation:

Given: m=500kg, r=1.0m, w=200\pi rad/s

a). The rotational kinetic energy

K_R=\frac{1}{2}*I*w^2

I=\frac{1}{2}*m*r^2

I=\frac{1}{2}*500kg*(1.0m)^2

I=250 kg*m^2

K_R=\frac{1}{2}*250kg*m^2*(200\pi rad/s)^2

K_R=49.348x10^6J

b). The power average 0.8kW un range time can be find

P=\frac{K_R}{t'}

Solve to t'

t=\frac{K_R}{P}

t=\frac{49.348x10^6}{0.8x10^3w}=6168.5s

t=6168.5s\frac{1minute}{60s}=102.8 minutes

3 0
3 years ago
Which of the following phases of water has a definite volume but not a definite shape?
tatuchka [14]

Answer:

Gas

Explanation:

Cos Milky Said it. Milky Smart.

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3 years ago
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A sodium vapor lamp omit waves with the frequency of 5.26x10^14 Hz. What is the wavelength of light?
koban [17]

Answer:

\lambda=5.70\times 10^{-7}\ m

Explanation:

The frequency of a sodium vapor lamp, f=5.26\times 10^{14}\ Hz

We need to find the wavelength of light. The relation between wavelength, frequency and speed of light is given by :

c=f\lambda\\\\\lambda=\dfrac{c}{f}\\\\\lambda=\dfrac{3\times 10^8}{5.26\times 10^{14}}\\\\\lambda=5.70\times 10^{-7}\ m

So, the wavelength of light is equal to 5.70\times 10^{-7}\ m.

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3 years ago
If a ball of mass 0.30kg is dropped onto a flat surface, which it hits at 9m/s and rebounds to 3m. Find the rebound speed just a
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Answer:

vinegar without v and i

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