Answer:
C. Electromagnetic waves are longitudinal waves
Explanation:
Answer: Mass of car is 2660kg
Explanation:
Use equation for Kinetic ene)rgy :
Ek=(m*V²)/2
from this eqation you can get mass
m*V²=Ek*2
m=Ek*2/v²
Ek=5.32*100000J
V=20m/s
m=?
m=2*5.32*100000J/(20m/s)²
m=2660kg or 2.66t
Answer:
Transverse motion does not produced a doppler effect for a star. As, the doppler effect are occurred when the object are emitting light either in the direction towards the observer or moving away. The various astronomical objects are moving and the observer observed the blue wavelength of the light.
Doppler effect in the star is the process when the observer moves towards the star then it seems like the star move towards the observer.
Answer:
Option b ( It is a closed system) is the appropriate answer.
Explanation:
- The mass transfer isn't made on a platform. There seems to be no mass transfer, the mechanism can't be separated as power lines will interfere beyond the physical boundaries including its fur patch.
- The mechanism can't however be separated and, while the mass transfer is indeed not present, several field lines will communicate well outside the mechanism.
The other options are not linked to the situation in question. Thus, the answer is correct.