The electromagnetic wave shown above is made up of vibrating Electric fields.
I assume this is why electromagnetic waves can travel through a vacuum, due to lack of matter.
Answer:
40 mm
Explanation:
=Proper Length of rod = 2.05 m
Speed of rod = 6.01×10⁷ m/s
Length contraction
Final Length will be 2.01 m
So length that is contracted is 2.05-2.01 = 0.04 m
The length is contracted by 40 mm.
Answer:
The bird's speed immediately after swallowing is 4.98 m/s.
Explanation:
Given that,
Mass of bird = 290 g
Speed = 6.2 m/s
Mass of sees = 9.0 g
Speed = 34 m/s
We need to calculate the bird's speed immediately after swallowing
Using conservation of momentum
Put the value into the formula
Hence, The bird's speed immediately after swallowing is 4.98 m/s.
50N.
The magnitude of the reaction to any force is equal to the magnitude of the first force. (See Newton #3.)