Answer:
all forms of electromagnetic radiation travel at a single speed in a vacuum.
Explanation:
No, gravity does not have mass, it behaves like a particle without mass
Answer:
t = 0.28 seconds
Explanation:
Given that,
Force acting on a firework, F = 700 N
The momentum of the firework, p =200 kg-m/s
We need to find the time before it explodes. Ket the time be t. We know that, the rate of change of momentum is equal to external frce. So,

So, the required time is equal to 0.28 seconds.
Answer:
The answer is diffraction
Explanation:
I just took the test and diffraction is what is being shown in the example