A90.0kg person stands 1.25m from a 60.0kg person sitting on a bench nearby. what is the magnitude of the gravitational force between them ?

Explanation:

According to Newton's law of Gravitation, the force exerted between two bodies of masses and  and separated by a distance  is equal to the product of their masses and inversely proportional to the square of the distance:

(1)

Where:

is the Gravitational Constant

is the mass of the first person

is the mass of the second person

 is the distance between both persons

Solving:

(2)

Finally:

 This is the gravitational force between both persons. As you can see is too small.

i'm only doing this for the points : (

explanation:

i'm only doing this the points

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: