What are the given choices?
A watt is the SI derived-unit for one joule per second, so the correct answer is C. A watt corresponds to the power in an electric circuit in which the potential difference is one volt and the current is one ampere.
Answer: Option (B) is the correct answer.
Explanation:
Expression for centripetal acceleration is as follows.
a = .......... (1)
Also, we know that
........... (2)
Putting the value from equation (2) into equation (1) as follows.
a =
=
As,
a =
or,
Now, we will reduce a to . So, new value of will be equal to .
Therefore, value of new period will be as follows.
=
Thus, we can conclude that the new period is equal to .
In restricted visibility, a power - driven vessel under way gives ONE PROLONGED BLAST SOUND SIGNAL every two minutes. In restricted visibility, the ability to observe and see the front is greatly reduced, so the sound signal serves to warm other vessels that another one is within the vicinity.
Answer:
LHS=RHS=[L]
Explanation:
Given mathematical expression:
where: dimension:
s = displacement length
u = initial velocity
t = time
a = acceleration
now using dimensional analysis:
we know that the ratio and constants have no dimension.
as we know that only similar dimensions can be added or subtracted therefore we get a correct conclusion.
<em>However we can deduce the operators between the equations and can neither check for the validity of the constants. We can only check for the dimension of the terms involved.</em>