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2 years ago

Experiments need to be repeated by the scientist and also replicated by other scientists.

Physics

2 answers:

BlackZzzverrR [31]2 years ago

6 0

Answer:

true

Explanation:

grandymaker [24]2 years ago

3 0

Answer:

false

Explanation: because the other scientists could've missed something in there experiment

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How fast does a 500 Hz wave travel if its wavelength is 0.5 m?

olga_2 [115]

Answer:

250 m/s

Explanation:

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2 years ago

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What are the two groups of planets based on composition?

iris [78.8K]

OK so yeah the mercury Venus Earth and Mars a rocky planets and Jupiter Saturn Uranus and Neptune our gaseous planets so I think that’s your answer correct me if I’m wrong:D

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2 years ago

Which source of energy would you prefer for cooking and why?

timurjin [86]

Answer:

gas

Explanation:

because It is fast and easy

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3 years ago

A charge of -3.02 μC is fixed in place. From a horizontal distance of 0.0377 m, a particle of mass 9.43 x 10^-3 kg and charge -9

Andreyy89

Answer:

$d = 0.0306 m$

Explanation:

Here we know that for the given system of charge we have no loss of energy as there is no friction force on it

So we will have

$U + K = constant$

$\frac{kq_1q_2}{r_1} + \frac{1}{2}mv_1^2 = \frac{kq_1q_2}{r_2} + \frac{1}{2}mv_2^2$

now we know when particle will reach the closest distance then due to electrostatic repulsion the speed will become zero.

So we have

$\frac{(9 \times 10^9)(3.02 \mu C)(9.78 \mu C)}{0.0377} + \frac{1}{2}(9.43 \times 10^{-3})(80.4)^2 = \frac{(9 \times 10^9)(3.02 \mu C)(9.78 \mu C)}{r} + 0$

$7.05 + 30.5 = \frac{0.266}{r}$

$r = 7.08 \times 10^{-3} m$

so distance moved by the particle is given as

$d = r_1 - r_2$

$d = 0.0377 - 0.00708$

$d = 0.0306 m$

6 0

3 years ago

What happens to balloon filled with air when it goes very high attitude from surface of earth why

vlada-n [284]

Answer:

The balloon will continue to expand and eventually burst.

Explanation:

Simply, the reason for this is because the density of the atmosphere decreases gradually as you increase in altitude closer to space. This means that the air on the outside of the balloon can't provide enough pressure over the surface of the balloon in order to counteract the gas on the inside of the balloon from expanding.

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2 years ago