Answer:
recall that heat absorbed released is given by
Q = mc*(T2 - T1)
where
m = mass (in g)
c = specific heat capacity (in J/g-k)
T = temperature (in C or K)
*note: Q is (+) when heat is absorbed and (-) when heat is released.
substituting,
Q = (480)*(0.97)*(234 - 22)
Q = 98707 J = 98.7 kJ
Explanation:
Answer:
Explanation:
Wire is in the form of an arc of the size of a quarter of a circle. The distance between its two end
=√2 x 21 cm
= 29.7 cm
= 29.7 x 10⁻² m
Force on the arc in the magnetic field will be same as the straight line meeting its two ends.
Force = BIL
= 48 x10⁻³ x 1.5 x 29.7 x 10⁻²
= 2138.4 x 10⁻⁵ N.
Answer:
1.9 x 10⁵
Explanation:
I <em>ASSUME </em>your question is supposed to read
9.1 x 10⁵ – 7.2 x 10⁵ =
9.1 - 7.2 = 1.9 and the powers are the same so just tag them along
its the same as
910000 - 720000 = 190000
1.9 x 105 could be another possibility if the question is actually posed correctly.
Answer:
The only way to increase the work output is to increase the work input. You can't get more work out of a machine than you put into it. The moving parts of a machine must use some of the work input to overcome friction. Because of friction, the work output of a machine is always less than the work input.
Explanation:
