Two objects are 5 kg and 10 kg respectively, and they're 10 m apart. if the distance between them is increased to 20 m, what happens to the gravitational force?
a. it decreases. b. it increases slightly. c. it is doubled. d. it doesn't change

Answer: Option A it decreases

Explanation :

The formula for gravitational force F is given by

F  = G M1*M2/

where, G is the gravitational constant

M1 and M2 is the mass of the two bodies.

d is the distnce between the two bodies.

M1 = 5 kg

M2= 10 kg

d = 10

If we put these values in the formula we get,

F = 6.67 * * 5 *10 /

F = 3.335 *

then the answer comes out to be 0.83375*

1. (1.2kw)x(15/60hours) = .3kwh --> a

2. (5kw)x(90/60hours)x(8cents/kwh) = $0.60 --> d

3. microwave --> 1200 watts = (1.2kw)x(6/60hours) = .12kwh

coffee-maker --> 900 watts = (.9kw)x(10/60hours) = .15kwh

therefore, it requires more energy for the coffee-maker to do the same amount of work.

so the answer is a.

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.