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Rom4ik [11]
3 years ago
9

Why is temperature a good criterion for searching for Earthlike exoplanets?

Physics
2 answers:
kkurt [141]3 years ago
5 0

Liquid water is essential for life to exist. Water can occur in a liquid state only within a specific temperature range, so knowing the temperature range on a planet will help astronomers predict whether life exists on that planet. I hope that this helps

grandymaker [24]3 years ago
4 0
Because it gives us the abilitity to find planets that have decent temperatures relative to earths temp so we can determine if the planet even has a possiblilty to sustain life hope this helps

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An object moves in simple harmonic motion described by the equation d equals one fifth sine 2 t where t is measured in seconds a
tensa zangetsu [6.8K]

Answer:

The maximum​ displacement, the​ frequency, and the time required for one cycle are 1/5 inch, 1/π Hz and π sec.

Explanation:

Given that,

The equation of simple harmonic motion

d = \dfrac{1}{5}\sin 2t.....(I)

We need to calculate the maximum amplitude

Using equation of simple harmonic motion

y = a \sin\omega t

Where, a = amplitude

\omega =frequency

t = time

On comparing equation (I) and general equation

The amplitude is a maximum displacement traveled by a wave.

a = \dfrac{1}{5}

So, the maximum displacement is

d= \dfrac{1}{5}\ inch

We need to calculate the frequency

\omega=2\pi f

f = \dfrac{1}{\pi}\ Hz

We need to calculate the time required for one cycle

t =\dfrac{1}{f}

t =\pi\ sec

Hence, The maximum​ displacement, the​ frequency, and the time required for one cycle are 1/5 inch, 1/π\ Hz and π\ sec.

3 0
3 years ago
A bird lands on a bird feeder which is connected to a spring. The mass of the bird is exactly the same as the mass of the bird f
mihalych1998 [28]

Answer:

The added mass will mean a longer period of oscillation.

Explanation:

The period of oscillation here is given by the formula;

T = 2π√(m/k)

Where m is mass and k is spring constant

From the equation of oscillation period above, it's obvious that when we increase the mass, the oscillation period will also increase.

Thus, the added mass will mean a longer period of oscillation.

5 0
3 years ago
As a substance is changing from a liquid to a gas, the distance
bonufazy [111]

As a substance is changing from a liquid to a gas, the distance between its molecules increases, and the temperature of the system remains the same.

Option A

<u>Explanation:</u>

The external energy required to change from one state to another is mostly considered as temperature. So on increase in temperature, the solid changes to liquid and the liquid changes to gases. But the temperature remains constant in the system after changing the phase.

This is because when the temperature is increased on a liquid system, the rise in temperature is utilized for breaking the bonds and thus the molecules will be distanced from each other. If we consider liquid - gas phase transition, the gas molecules are farther distanced compared to liquid molecules.

So the rise in temperature is utilized for breaking the bonds and also to provide the kinetic energy to the gas molecules as they are tend to move more freely compared to liquid. Thus, the distance between the molecules increases, and the temperature of the system remains the same on changing from liquid to gas.

5 0
3 years ago
the sole of a tennis shoe has a surface area of 0.0290 m^2. if it is worn by a 65.0 kg person, what pressure does the shoe exert
AURORKA [14]

Answer: 21965.517 Pa

Explanation:

Pressure P is the force F exerted by a gas, a liquid or a solid on a surface (or area) A, its unit is Pascal Pa which is equal to N/m^{2} and its formula is:  

P=\frac{F}{A} (1)

In this case we have the surface of a sole of a tennis shoe:

A=0.0290 m^{2} (2)

And the mass m of the person who wears it:

m=65 kg

On the other hand, we know the weight is the force  F the Earth exerts on people and objects due gravity g :

F=m.g=(65 kg)(9.8m/^{2})

F=637N (3)

Substituting (2) and (3) in (1):

P=\frac{637N}{0.0290 m^{2}} (4)

Finally:

P=21965.517 Pa This is the pressure the shoe exert on the ground

5 0
3 years ago
If the N pole of a magnet is brought near to an unmagnetized iron, nail, then the nail becomes​
Andreyy89

Answer:

The nail also magnatized .

5 0
2 years ago
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