Answer:
cause Ice is lighter than sunglasses
Answer:
I need help with one to
Explanation:
Im trying to ask someone but no one knows :(
Answer:
1.5 N
Explanation:
You've left us to guess what the question is. I will Assume it is what's the force?
Givens
m = 3 kg
vi = 1.5 m/s
vf = 4 m/s
t = 5 seconds
Formula
F = m * (vf - vi)/t
Solution
F = 3 * (4 - 1.5) / 5
F = 1.5 N
Heat absorbed to raise the temperature is given by
here
m = mass
c = 7.11 J/g C
Q = 138 KJ
Now by using the above formula we will have
So the amount of the substance will be 3.88 kg
Answer:
1) 130, 000 J
2) 1 J
Explanation:
1)
Work done is product of force in Newtons and distance in meters
W=Fd
Given an average force of 5,200 N and distance of 25 m then we evaluate that
Work done=5200*25=130, 000 Nm or Joules
2)
Similarly, for the second question, given force of 1N and distace of 1 m then the work done will be
W=1*1=1 J
