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vovangra [49]
3 years ago
7

In each of your hands you hold a smartphone one has a mass of 0.130kg and the other has a mass of 0.200kg. if both phones create

a force of 45 Newton on each other find the distance “r” (the radius) between them.
Physics
1 answer:
Annette [7]3 years ago
6 0

Answer:

0.00000019631 meters

Explanation:

Rearrange Fg=(Gm1m2)/r^2 for r

You get r=sqrt((Gm1m2)/Fg)

G=6.674*10^-11

r=sqrt((6.674*10^-11)(0.13)(0.2)/45)

r=0.00000019631 meters, or 0.00019631 mm

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3 years ago
A massless rod of length L has a small mass m fastened at its center and another mass m fastened at one end. On the opposite end
konstantin123 [22]

Answer:

onservation of energy

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So 2m*g*L = 1/2*1.25*m*L^2*?^2

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3 years ago
Examine the following equation.
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3 years ago
A primary coil of a transformer in a toy electric car has 300 turns and the secondary coil has 30 turns. How many volts will be
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3 years ago
Two identical charges q placed 2.0 mapart exert forces of magnitude 4.0 N on each other What is the value of the charge q? a) q
katen-ka-za [31]

Answer:

c) 4.2*10^{-5}C

Explanation:

Coulomb's law says that the force exerted between two charges is inversely proportional to the square of distance between them, and is given by the expression:

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In this case q_{1}=q_{2}=q, so we have:

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Replacing the given values:

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q=4.2*10^{-5}C

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