I need a testable question that I can research and write an essay on. Please help
1 answer:
You might be interested in
Answer:
Gravitational Force
Explanation:
Gravitational force also called gravity or gravitation is an attractive force that keeps two objects in space. Gravitational force is an attractive force that tends to pull matters together. Every objects in the universe experience gravitational pull. Planets, stars, galaxies, are held together by gravity. It is a weak force. The weight of an object is the product of gravitational force acting on its mass.
Newton's Law of Universal Gravitation states the force of attraction between two masses m₁ and m₂ in the universe is directly proportional to the product of their masses and inversely proportional to the square of their distance apart.
Where;
F is the gravitational force,
G is the gravitational constant = 6.67 × 10¹¹ m³/kg/s,
m1 and m2 are the masses of the objects,
r is the distance between the centers of the masses
Answer:
a) F = 0.01234N to the south direction
b) F = 0.01234N to the north direction
c) F = 0.01234N
d) North of West
Explanation:
The magnetic force in a magnetic field is given by:
Length of the wire, l = 1 cm = 0.01 m
Current flowing through the wire, I = 2.15 A
a) If the magnetic field direction is east
∅ = 90
F = 0.574 * 2.15 * 0.01
F = 0.01234 N to the south direction according to the Fleming's Right Hand Rule
b) If the magnetic field direction is south
The magnitude of the magnetic force remains the same
That is , F = BIL sin 90
F = 0.01234 N to the west
c) If the magnetic field direction is 30 degrees south
The angle between the magnetic field and the length of the wire still remains 90 degrees
Therefore the magnitude of the force still remains 0.01234
F = 0.01234 N
d) the direction of the force is the North of West
Answer:
The ratio of their orbital speeds are 5:4.
Explanation:
Given that,
Mass of A = 5 m
Mass of B = 7 m
Radius of A = 4 r
Radius of B = 7 r
The orbital speed of satellite A,
......(I)
The orbital speed of satellite B,
......(I)
We need to calculate the ratio of their orbital speeds
Using equation (I) and (II)
Put the value into the formula
Hence, The ratio of their orbital speeds are 5:4.