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jenyasd209 [6]
2 years ago
6

If your mass, the mass of Earth, and the mass of everything in the solar system were twice as much as it is now, yet everything

stayed the same size, your weight on Earth woulda. quadruple. b. be the same. c. double. d. be eight times as much as now. e. none of the above
Physics
1 answer:
damaskus [11]2 years ago
3 0

Answer: a. Quadruple

Explanation:

Gravitational force = Gm1m2/r^2

(Where m1 is the mass of earth, m2 is my mass and r is the radius of earth and G is the gravity constant)

Weight = m2g

(Where g is the acceleration due to gravity)

Gm1m2/r^2 = m2g

Twice the masses

F = G(2m1)(2m2)/r^2

F = 4Gm1m2/r^2

The gravitational force has increased 4 times, this means that my weight on earth will quadruple

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SVETLANKA909090 [29]

Answer:

T_s = 6.8 degree C

Explanation:

As per thermal radiation we know that rate is heat radiation is given as

\frac{dQ}{dt} = \sigma eA (T^4 - T_s^4)

here we know that

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e = 0.557

\sigma = 5.67 \times 10^{-8} W/m^2K^4

\frac{dQ}{dt} = 120 J/s

now we have

120 = (5.67 \times 10^{-8})(0.557)(1.38)(307^4 - T_s^4)

120 = (4.36 \times 10^{-8})(307^4 - T_s^4)

T_s = 279.8 K

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5 0
3 years ago
Which is the phase change in which a substance changes from a gas to liquid?
Aleksandr [31]

Answer:

Condensation

Explanation:

The phase change in which a substance changes from a gas to liquid is Condensation.

There are  3 natural states of matter;

Solids, Liquids, and Gases.

Matter under certain conditions can change from one state to another. When Solids are heated they change into Liquids through the process of Heating. Upon cooling, the Liquids convert to Solid through freezing. When a Liquid such as water is heated, it converts into the Gaseous state through evaporation. Upon cooling, the Gas converts back into the Liquid state through Condensation.

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3 years ago
A hydraulic turbine is used to generate power by using the water in a dam. The elevation difference between the free surfaces up
Serjik [45]

Answer:

0.906

Explanation:

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3 years ago
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Answer:

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The ball is moving at a speed of 17.7 m/s when it hits the ground.

8 0
3 years ago
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3 years ago
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