Answer:
90 N
Explanation:
The force applied to the ball is given by:
where
is the change in momentum of the ball
is the time taken
The change on momentum of the ball is:
So, the force applied is
<span>the answer is 7...What is the mass number of the isotope lithium-7?
the mass of isotope lithium-7 is 7. </span>
Answer:
A) total intensity = 5x10^-4W/m2
B) total intensity = 5.34x10^-4W/m2
Explanation:
Detailed explanation and calculation is shown in the image below
Answer:
D. 21 ml
Explanation:
Since, the cylinder is marked and graduated in the intervals if 1 ml. Therefore, the values between two consecutive ml, such as between 30 ml and 31 ml can not be determined. Because, we do not have any scale in between the ml. So, the least count of this instrument is 1 ml. This graduated cylinder can give the answers to zero decimal places, accurately. And it can not determine any decimal value due to its graduating or the marking limitation. So, all the options given, contain a decimal value, except for the option D. In option D there is no decimal value, hence it is a correct answer.
D. <u>21 ml</u>
Adding thermal energy
Performing work on the system
