Answer:
Explanation:
Solution:
- Finding large moons comparable in size to their planets result from impacts of two astro-bodies. The probability of such an event occurring is very rare.
- Even at the best luck, one moon can be made from the result of giant impact. While the probability of 6 planets having moons of comparable sizes is close to impossible.
rotational motion of a concrete mixer
linear motion of a tractor
is this what you mean
Answer:A)0.5 and 2 mm
Explanation:
Given
radius R of wire is 1 mm
magnetic Field at edge(surface) 
Magnetic Field at a distance r' from Center is 
and we know

where 
Permeability of free space
distance from center
For 
---1
For 
---2
Divide 1 and 2


If r is inside the wire then

for 
---3
for 
----4
Divide 3 and 4


An electrical generator and motor are two machines that operate oppositely.
An electrical generator uses mechanical energy, converting it to produce electrical energy. This mechanical energy is provided in most cases from a spinning/rotating action in which a wire or loop of wire spins in a magnetic field. This causes the wire to move sharply through the magnetic field, causing current to flow, and in turn, creating electricity.
An electrical motor does the opposite, but uses the same principles, converting electrical energy to produce mechanical energy. The motor will have an alternating current (AC) moving through pairs of magnets, producing a rotating magnetic field. This causes the motor's central rotor to spin, powering whatever machinery it is hooked up to.
Weight is based on density mass is not.