Answer:
Chinese app which is number
Explanation:
Answer:
-2000 J (heat lost)
Explanation:
We can solve the problem by using the 1st law of thermodynamics:
where
is the change in internal energy of a system
Q is the heat absorbed by the system
W is the work done by the system
In this situation, we have
(work done by the student)
(decrease in internal energy)
So the heat is
And the negative sign means the student has lost heat.
Answer:
They have the same wavelength
Answer:
it shows that co2 is absorbed by the atmosphere.
when the animals respire they produce co2 which is release in atmosphere and in presence of sunlight and chlorophyll the plants manufacturs the food and releases the oxygen in the atmosphere .
<em>hope</em><em> </em><em>it</em><em> </em><em>helps</em><em>.</em><em>.</em>
Answer:
8.0s
Explanation:
45 km/h ÷ 3.6 = 12.5 m/s
t.v = d/t
vt/v = d/v
t = d/v = 100.0m /12.5 m/s = 8.0s
Hope this helps!!
