On a cold winter day, the outside temperature is -20C and the inside temperature is maintained at 20C. There is a net heat flow to the outside through the walls, roof, etc., of 25 kW.
What is the rate of increase of the entropy of the universe as a result of this? A) 13 W/K
B) 25 W/K
C) 85 W/K
D) 99 W/K
E) 0 W/K
Question 2
A mass is attached to a spring. It oscillates at a frequency of 4.0 Hz when displaced a distance of 2.0 cm from equilibrium and released. What is the maximum velocity attained by the mass?
A) 0.08 m/s
B) 0.32 m/s
C) 0.02 m/s
D) 0.40 m/s
E) 0.50 m/s
This moose exploits the twigs and buds of woody plants for the food it needs to survive a cold north
Always connect an exhaust hose to the tailpipe of a vehicle to be run inside a building.
The primary windings are inside the secondary windings on this General Motors coil.
Remove cold source, and check the knee for changes. Notice skin color and changes in swelling around ...
Observed change in surface temperature from 1901 to 2012
Cold Front