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BabaBlast [244]
3 years ago
10

Dr. Perez is part of a team of researchers who are working on designing and building a probe to study solar flares. What conditi

on must the probe meet?
It must be able to travel over 300,000,000 km to reach the Sun.
It must be able to withstand a temperature of up to 20 million degrees Celsius.
It must be able to penetrate to the core since solar flares originate there.
it must be able to remain in the Sun for at least eleven years.
Physics
2 answers:
Ivan3 years ago
7 0
The team in which Dr. Perez is a part of should consider first that the temperature in the sun is very much different to the temperature we have on Earth. With that being said, they must prioritize that the probe be able to withstand the temperature conditions. Therefore, the answer should be letter B. 
PSYCHO15rus [73]3 years ago
6 0

Answer: It must be able to withstand a temperature of up to 20 million degrees Celsius.

Explanation:

Solar flares are sudden bright flash that occurs near the surface of the Sun. These flares occur for few minutes and occur very close to Sun's surface. Sometimes, solar particles are emitted along with the flare i.e. Coronal Mass ejection. Sun loses some of its mass. The particles travel in space at high speeds. The temperature of solar flares is extremely high. It reaches about 20 million degrees of temperature.

Thus, in order to study the solar flares would have to go very close to the Sun and able to withstand such high temperature. The major challenge is the designing and building a probe with material that be able to withstand this temperature.

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The number of confirmed exoplanets is (a) less than 10; (b) roughly 50; (c) more than 500; (d) more than 5000.
Bad White [126]

Answer:

(c) more than 500

Explanation:

Until 2019, more than 3000 planetary systems have been discovered that contain more than 4000 exoplanets, since some of these systems contain multiple planets. Most known extrasolar planets are gas giants equal to or more massive than the planet Jupiter, with orbits very close to its star.

8 0
3 years ago
The 8 kg block is then released and accelerates to the right, toward the 2 kg block. The surface is rough and the coefficient of
natita [175]

Answer:

3.258 m/s

Explanation:

k = Spring constant = 263 N/m (Assumed, as it is not given)

x = Displacement of spring = 0.7 m (Assumed, as it is not given)

\mu = Coefficient of friction = 0.4

Energy stored in spring is given by

U=\dfrac{1}{2}kx^2\\\Rightarrow U=\dfrac{1}{2}\times 263\times 0.7^2\\\Rightarrow U=64.435\ J

As the energy in the system is conserved we have

\dfrac{1}{2}mv^2=U-\mu mgx\\\Rightarrow v=\sqrt{2\dfrac{U-\mu mgx}{m}}\\\Rightarrow v=\sqrt{2\dfrac{64.435-0.4\times 8\times 9.81\times 0.7}{8}}\\\Rightarrow v=3.258\ m/s

The speed of the 8 kg block just before collision is 3.258 m/s

7 0
3 years ago
Define: New Moon, Full Moon, Waxing phases and Waning phases.
Nutka1998 [239]
Full moon: All of the moon or sun appears covers by the shadow.
When the moon is waxing, it means that the lit part is getting larger (going towards a full moon)
When the moon is waning , it means that the lit part is getting smaller (going towards a new moon)
The new moon represents the start of a new lunar cycle and occurs approximately every 29 days.

Hope that help:)
5 0
3 years ago
If the mass of the object is doubled and the speed is halved then kinetic energy will change by a factor of:
madam [21]

Answer:

kinetic energy will change by a factor of 1/2

Option C) 1/2 is the correct answer

Explanation:

Given the data in the question;

we know that;

Kinetic energy = 1/2.mv²

given that mass of the object is doubled; m1 = 2m

speed is halved; v1 = V/2

Now, New kinetic energy will be; 1/2.m1v1²

we substitute

Kinetic Energy = 1/2 × 2m × (v/2)²

Kinetic Energy = 1/2 × 2m × (v²/4)

Kinetic Energy = 1/2 × m × (v²/2)

Kinetic Energy = 1/2 [ 1/2mv² ]

Kinetic Energy = 1/2 [ KE ]

Therefore; kinetic energy will change by a factor of 1/2

Option C) 1/2 is the correct answer

3 0
3 years ago
Wha is the frequency of a wave having a period equal to 18 seconds?
Rainbow [258]

Answer:

5.5 × 10-2 hertz

Explanation:

The time taken by a wave crest to travel a distance equal to the length of wave is known as wave period.

= 0.055 per second          (1 cycle per second = 1 Hertz)

Thus, we can conclude that the frequency of the wave is 5.5 X 10^{-2} hertz.

Hopes this helps, love <3

5 0
3 years ago
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