If the distance between two objects decrease and the masses of the objects remain the same, then the force of gravity between the two objects a) decreases. b) increases. c) remains the same. d) increases then decreases.

The correct answer is option B.

Explanation;

The formula of gravitational force is given as:

G = gravitational constant

M, m = Masses of two different objects in which the force is acting.

r = distance between both the objects.

As we can see from the formula that. force of gravity is inversely proportional to the square of the distance between both the objects.

When the distance between the both objects with same masses decreases the gravitational force between them increases.Hence the correct answer is option B.

since you're a real machine, your ama is always less than your ima, because you can never totally eliminate friction.

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation: