Two spherical objects have masses of 100 kg and 200 kg. Their centers are separated by a distance of 40 cm. Find the gravitational attraction between
them.

8.34 x 10⁻⁶N

Explanation:

Given parameters:

Mass 1  = 100kg

Mass 2 = 200kg

Distance of separation  = 40cm = 0.4m

Unknown:

Gravitational force of attraction between them  = ?

Solution:

To solve this problem, we use the expression below which is derived from the Newton's law of universal gravitation:

           Fg  =

G is the universal gravitation constant = 6.67 x 10⁻¹¹

d is the separation

 Now;

  Fg =   = 8.34 x 10⁻⁶N

a longitudinal wave moves energy that is to the direction of the wave’s movement. - true

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.