The correct answer is A. Electromagnetic waves can transfer energy without a medium. Heat can be transferred through a vacuum only via radiation. Infrared waves are electromagnetic waves that does not require a medium to travel. Heat is transferred in a vacuum in the form of infrared waves.
Answer:
1.24
Explanation:
The resistivity of copper
The resistivity of Aluminum,
The wires have same resistance per unit length.
The resistance of a wire is given by :
According to given condition,
So, the required ratio of the diameter of Aluminum to Copper wire is 1.24.
Answer:
c. Eggs of earthworms
Explanation:
The actual formation of earthworms is by existing earthworms laying eggs.
The other answers are all separate from earthworms, though they are all found in the area with the earthworms.
(B) 1.00 m
Explanation:
Since the meter stick is traveling with Jill, it will have the same speed as she does so relative to Jill, the meter stick is stationary so its length remains 1.00 m as measured by her.
