It is 2 KJ
It is because the formula is :
q=m∆Hf
where m is the mass and ∆Hf is the heat fusion.
So, we get:
q=80×25
q=2000J or 2 KJ
Answer:
the experimental group would be the teachers who recieved the candy
control group would be the teachers who dont get any candy
<em>Explanation:</em>
experimental group is the group that receives the test variable being tested in this case the variable being the candy
and the control group is the group who doesn't receive the variable
purpose of having a control is to rule out other factors which may influence the results of an experiment.
Answer:
The time taken for the vehicle to pull a 500 N rock 100 meters is :
<u>t = 5 sec</u>
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Explanation:
Work = The magnitude of work is given by the product of force and displacement .
W = F x s
F = Force in Newton"N"
s = displacement "s"
In the question : F = 500 N and s = 100 m
W = F x s
W = 500 x 100
W = 50000 Nm
W = 50000 J
Power : It is the rate of doing work.The expression of power is given by :
W = Work = 50000 J
t = time
P = power = 10,000 Watt
Put the value in the formula:
t = 5 sec
Answer:E
Explanation:
The electron is expected to be in any of the 4p orbitals. For the 4p orbitals
n=4
l=1
ml=-1,0,1
ms=-1/2 or +1/2
All the ml and ms configurations are equiprobable hence the answer.