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4 years ago

Extra-solar planets are probably composed of which gases?

Physics

1 answer:

kifflom [539]4 years ago

5 0

Exoplanets are probably
<span>made of hydrogen and helium </span>gas<span>. ... </span>

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What is the largest suspected environmental problem associated with the burning of fossil fuels?

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The answer is global warming.

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3 years ago

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A trap-jaw ant snaps its mandibles shut at very high speed, a good trait for catching small prey. But an ant can also slam its m

irakobra [83]

Answer:

v = 0.509 m/s

Explanation:

Given that,

Mass of the ant, $m = 12\ mg = 1.2\times 10^{-5}\ kg$

Force exerted, $F = 47\ mN = 0.047\ N$

Time, $t=0.13\ ms=0.00013\ s$

To find,

Speed with which it leave the ground.

Solution,

The change in momentum is equal to the product of force and time as :

$F\times t=m(v-u)$

Since, u = 0

$F\times t=mv$

$v=\dfrac{Ft}{m}$

$v=\dfrac{0.047\ N\times 0.00013\ s}{1.2\times 10^{-5}\ kg}$

v = 0.509 m/s

So, the speed with which it will leave the ground is 0.509 m/s.

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3 years ago

Alice is going on a picnic and is aware that it will be easier to carry the picnic basket if it balances at the center where the

kogti [31]

Answer:

10.787 cm towards the 0.675 kg mass or 41.213 cm from the 1.65 kg mass.

Explanation:

$m_1$ = Mass of potato salad container = 1.65 kg

$m_2$ = Mass of lemonade container = 2.35 kg

$m_3$ = Mass of hot dog package = 0.675 kg

l = Length of basket = 52 cm

x = Location of lemonade container

When the mass is balanced along the center of mass the following equation applies

$-m_1\frac{l}{2}+m_2x+m_3\frac{l}{2}=0\\\Rightarrow x=\frac{m_1\frac{l}{2}-m_3\frac{l}{2}}{m_2}\\\Rightarrow x=\frac{1.65\frac{0.52}{2}-0.675\frac{0.52}{2}}{2.35}\\\Rightarrow x=0.10787\ m$

The lemonade container should be placed at 10.787 cm towards the 0.675 kg mass or 41.213 cm from the 1.65 kg mass.

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3 years ago

Imagine that you take a beam of monochromatic light and start to reduce the power of this beam of light. As you get the power (i

Goryan [66]

Answer:

No change in velocity of photons...

Explanation:

The reason speed of light is constant is that is doesn't depend upon intensity of light as produced by the source. This is the main reason why the wave function (psi)* in Einstein's Photoelectric experiment remains unaffected by intensity. The monochromatic beam of light will glow lower and lower as the power decreases and eventually vanishes from visible range as the emission from the power source has been stopped...

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3 years ago

Describe the 1911 Geiger and Marsden Alpha Scattering Experiment.

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The Geiger–Marsden tests (also known as the Rutherford gold foil experiment) were a set of groundbreaking experiments that demonstrated that every atom has a nucleus that contains all of its positive charge and most of its mass.

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3 years ago

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