Answer:
The correct solution is "64 RPM".
Explanation:
The given values are:
Mass,
M = 2.3 kg
Diameter,
D = 20 cm
i.e.,
= 0.2 m
Rotates at,
N = 110 rpm
Mass of block,
m = 460 g
i.e.,
= 0.46 kg
According to angular momentum's conservation,
⇒ 
then,
⇒ 
On substituting the values, we get
⇒ 
⇒ 
⇒ 
Now,
⇒ 



then,
⇒ 
⇒ 
⇒ 
⇒ 
Answer:
<em>The magnetic field's direction is towards the north</em>
<em></em>
Explanation:
The force on a positive charge in a uniform magnetic field is represented by the right hand rule. To determine the direction of the force, place your right hand with your palm up, and your thumb at 90° to the other fingers. If the fingers represent the magnetic field, and the thumb the direction of the positive charge, then the palm will push up in the direction of the force. But a negative charge like an electron pushes in exactly the opposite direction. So if you follow this rule, you will find that the magnetic field points towards the north.
The answer to this question is Visible Light
Answer:
Explanation:
Kinetic energy can be stored. For example, it takes work to lift a weight and place it on a shelf or to compress a spring. ... Kinetic energy can also be transferred from one body to another in a collision, which can be elastic or inelastic. One example of an elastic collision would be one billiard ball striking another.