Answer:
The magnitude of charge on each is 
Solution:
As per the question:
Mass of Earth, 
Mass of Moon, 
Now,
The gravitational force of attraction between the earth and the moon, if 'd' be the separation distance between them is:
(1)
Now,
If an identical charge 'Q' be placed on each, then the Electro static repulsive force is given by:
(2)
Now, when the net gravitational force is zero, the both the gravitational force and electro static force mut be equal:
Equating eqn (1) and (2):
Q = 
Answer:
f = 55mm, h ’= -9.89 cm
f = 200 mm, h ’= 42.5 cm
Explanation:
For this exercise let's start by finding the distance to the image, using the equation of the constructor
where f is the focal length, p and q are the distances to the object and image, respectively
lens with f₁ = 55mm = 0.55cm
= 
= 1.718
q₁ = 0.582 m
lens with f₂ = 200mm = 2m
= 
= 0.4
q₂ = 2.5 m
the magnification of a lens is given by
m = 
h ’= 
let's calculate for each lens
f = 55mm
h '= - 0.582 / 10 1.7
h ’= 0.0989 m
h ’= -9.89 cm
f = 200 mm
h '= - 2.5 / 10 1.7
h ’= -0.425 m
h ’= 42.5 cm
The negative sign indicates that the image is real and inverted
Answer:
- longitudinal waves only
Explanation:
The P seismic waves travel as elastic motions at the highest speeds. They are longitudinal waves that can be transmitted by both solid and liquid materials in the Earth's interior.
There are 3 states of matter. Solid, Liquid, Gas. An example of each would be ice, water, steam,
Explanation:
Spaceship A moves at 0.800 in the positive – direction, while spaceship B moves in the opposite direction at 0.750 (both speeds are measured relative to Earth). What is the velocity {A,B} of spaceship A relative to spaceship B
