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rjkz [21]
3 years ago
11

Consider two planets in space that gravitationally attract each other. if the masses of both planets are doubled, and the distan

ce between them doesn't change, then the force between them is
Physics
2 answers:
amid [387]3 years ago
6 0
Yhuihoifjhh <span>F = Gm1m2 / r^2 

if the masses are doubled then the force is increased by a factor of 4 


if the distance is doubled the force is decreased by a factor of 1/ 2^2 
the net result is no change in force</span>
a_sh-v [17]3 years ago
4 0
Yhuihoifjhh F = Gm1m2 / r^2

if the masses are doubled then the force is increased by a factor of 4


if the distance is doubled the force is decreased by a factor of 1/ 2^2
the net result is no change in force
Hope this helps you! Please mark brainest!
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The specific heat of water is 4.2 J/g • °C. How much heat is required to raise the temperature of 100 g of water by 5°C? *
Svetach [21]

Answer:

2100 J

Explanation:

The heat required to increase the temperature of a substance is given by

Q=mC\Delta T

where

m is the mass of the substance

C is its specific heat capacity

\Delta T is its change in temperature

For the water in this problem, we have:

m = 100 g is its mass

C = 4.2 J/g • °C is the specific heat capacity

\Delta T=5^{\circ}C is the increase in temperature

So, the amount of heat needed is:

Q=(100)(4.2)(5)=2100 J

7 0
2 years ago
When you go out into the sun, the UV light can give you a tan. UV light has a frequency of 7.89 x 1014 Hz. What is the wavelengt
Olin [163]

Answer:

Explanation:

Formula and givens

  • λ = c / f
  • λ is the wavelength
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  • c = 3*10^8
  • f = 7.89 * 10^14

λ = ?

Solution

λ = 3*10^8 / 7.89*10^14

λ = 3*10^8/7.89*10^14

λ = 2.36 * 10^7

λ = 236 nanometers. What you use as your solution depends on what what you have been taught.

6 0
3 years ago
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