Answer:
Electric Motor
Explanation:
There are mainly two types of machines for inter-conversion between mechanical energy and electrical energy as under:
- Motor
- Generator
Motor is a device which converts electrical energy into a mechanical whereas generator does the exact opposite of motor.
There are 2 types of motors:
AC Motor - Converts alternating current into mechanical energy
DC Motor - Converts direct current into mechanical energy
The angular velocity, ω=
2π/t; t = 24 hrs = 24 x 3600 seconds = 86400 s
ω = 7.27 x 10⁻⁵
v = ωr
= 7.27 x 10⁻⁵ x 3242.8 x 1.6 x 1000 (converting miles to meters)
= 377.2 m/s
Answer:
Upright and smaller than the object
Explanation:
Diverging lens as the name suggests that the rays diverge after the refraction and do not meet in reality. A concave lens is called diverging lens. When there is refraction of light through a concave lens then the light bends away from the principal axis and hence never meet in reality but on tracing the rays backwards the rays appear to meet leading to the formation of a virtual image, which is erect and smaller than the object for an object placed at the focus of the lens.
Similar image is formed for any case when the object is between optical center and infinity.
I have done this assignment before so I can tell you the more length that hangs over the table, the less vibration there is due to lack of tension.
