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pychu [463]
3 years ago
12

What happens to the magnitude of the force of gravitation between two objects if: 1. distance between the objects is tripled? 2.

mass of both objects doubled? 3. mass of both objects as well as the distance distance between them is doubled? EES CLASS TEACHER GRADE 9 A Oct 5 3 class comments
Physics
2 answers:
Ludmilka [50]3 years ago
8 0
<span>2. mass of both objects doubled? 
Hope it helped!</span>
VashaNatasha [74]3 years ago
3 0
2. mass of both objects doubled, because with two negatives makes a positive in resulting of my answer....(this formula i made up, i use it on problems like this, i feel so accomplished)
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Answer:

Electrical energy is answer

Explanation:

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3 years ago
The coefficient of linear expansion of ordinary glass is three times that of Pyrex glass. An ordinary glass rod and a Pyrex glas
DochEvi [55]

Answer:

b. 3 times

Explanation:

Lets take

Coefficient for ordinary glass = α₁

Coefficient for pyrex glass = α₂

 Given that α₁ = 3 α₂

Initial length of both glasses are equal = L

Change in the temperature is also same .= ΔT

We know that change in the length  given as

ΔL =  L α ΔT

Therefore

\dfrac{\Delta L_1}{\Delta L_2}=\dfrac{L\alpha_1\Delta T}{L\alpha_2\Delta T}

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Therefore change in the length of original glass is three time of pyrex glass.

b. 3 times

6 0
3 years ago
A 0.5 kg air-track car is attached to the end of a horizontal spring of constant k = 20 N/m. The car is displaced 15 cm from its
Dimas [21]
Find the amount of work that the spring does. This can be found using the equation 1/2kx^2. Then, you must set that equal to the amount of kinetic energy the car has. This is possible thanks to the work-energy theorem.

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Solve to find velocity. Remember, the spring is displaced .15 m, not 15!

To find the acceleration, use F = ma. The force being applied to the car is kx, and you know the mass. You do the math.

For problem C I don't know, haven't done that yet in my class. Sorry!
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What inspired Ronald McNair to do science
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While working as a staff physicist at hughes Research Laboratories McNair learned that the National Aeronautics and Space Administration (NASA) was looking for scientist to join the shuttle program;)

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If the acceleration was constant, then it would be the same as the average acceleration over the 10 second interval:

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3 years ago
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