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Ipatiy [6.2K]
3 years ago
15

When energy is produced in a reaction it

Physics
1 answer:
goblinko [34]3 years ago
4 0
The correct answer is b i believe
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3. a) If the distance between two objects increases by a factor of 5 (5),
irina [24]

Answer:

Answer for A

Explanation:

F1=GmM/r1^2

If r2 becomes r2=5r

F2=GmM/(25r^2)

Multiply with 25 gives to maintain the same force

I.e.,25F2=F1

F2=G(25m)M/25r^2=F1

By the factor 25 would change to increase to same.

3 0
2 years ago
Which of Newton’s laws explains why a satellite continually orbits the earth and does not fall into the ground?
Nuetrik [128]

Answer:

Newtons 1st law of inertia

Explanation:

4 0
3 years ago
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If you have a mass of 50 kg on <br> Earth, what is your weight in Newtons?
Bond [772]
Weight on any planet is (mass) x (acceleration of gravity there).

Acceleration of gravity on Earth is about 9.8 meters per second² .
So weight of 50 kg on Earth is  (50 x 9.8) = <u>490 newtons</u>.

(That's about  110.2 pounds.)
5 0
3 years ago
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_______ theories consider the child's culture as an important influence on development. a. psychodynamic b. behavioral c. contex
Pani-rosa [81]
I'm pretty sure that it's B. Behavioral
5 0
3 years ago
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An ideal heat-engine is to be used in an environment where the ambient temperature is 23.5 °C. What should be the minimum temper
Digiron [165]

Answer:

The minimum temperature of the hot reservoir = 231.25 °C

Explanation:

η₁ = (1- T(c)/T(h)) × 100 ............. equation 1

Where η₁ = efficiency of the heat engine in percentage, T(c) = Temperature at which the low temperature reservoir operates, T(h)) =Temperature at which the high temperature reservoir operates.

Making T(h) the subject of the equation in equation 1

T(h) = T(c)/ {1-(η₁ /100)}

where η₁ = 41.2%, T(c) = 23.5 °C = 23.5 + 273 =296.5 K

∴T(h) = 296.5/{1-(41.2/100)}

 T(h) = 296.5/(1- 0.412)

 T(h) = 296.5/0.588

  T(h)  =504.25 K

Convert to temperature in Celsius

   T(h) = 504.25 - 273 =231.25 °C

The minimum temperature of the hot reservoir = 231.25 °C

 

 

3 0
3 years ago
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