Answer:
The wavelength of a wave is 1.72 m.
Explanation:
Given,
Frequency, f = 0.9 Hz
Speed of a wave, v = 154.9 cm/s = 1.549 m/s
The speed of a wave is given by :
So, the wavelength of a wave is 1.72 m. Hence, this is the required solution.
Answer:
Yes, both of them are correct.
Answer:
"A blackbody is an object that absorbs all of the radiation that it receives(that is,it does not reflect any light,nor does it allow any light to pass through it and out the other side).The energy that the blackbody absorbs heats it up,and then it will emit its own radiation."
Explanation:
Risk*
By blocking the UV rays that are emitted by the sun.
-Steel jelly
Answer:
B is correct
Explanation:
Maximum Kinetic energy= Work done.
Now, Work done=mgh=mg(L−Lcosθ)=mgL(1−cosθ)
Option B is thus correct.
