Answer:
zero
Explanation:
Work done = - 400 J
In an isothermal process, the temperature remains constant. So, according to the first law of thermodynamics
dQ = dU + dW
As the temperature remains constant and the change in internal energy is the function of change in temperature, here change is temperature is zero so the change in internal energy is also zero.
Answer:
810.37 m/s
Explanation:
s = Displacement = 5 m
= Speed of sound in air = 343 m/s
Time taken to travel the distance
Time for the sound in metal
Speed of sound is given by
The speed of sound in the metal is 810.37 m/s
Answer:
A chain reaction will be sustained in a sub-critical mass.
Explanation:
Hope this helps!
If not, I am sorry.
Answer:
W = M g weight of ball
T cos θ = W balancing vertical forces
T sin θ = F balancing horizontal forces
tan θ = F / W dividing equations
F = W tan θ when θ equals zero F equals zero
Question 4 is true, question 5 is B.
