Three resistors are in series across a 24-volt source. Resistor R1 uses 3 volts and resistor R2 uses 6 volts. Resistor R3 uses
A) 15 V B) 6 V C) 3 V D) 24 V
A
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The jiggle pin or check valve in a thermostat helps bypass coolant as the temperature rises.
Answer the following statement true (T) or false (F)
The friction velocity F of water flowing through a pipe is given by , where g is the acceleration due to gravity, d is the diameter of the pipe, l is the length of the pipe, and his the head loss. Estimate F, and find the uncertainty in the estimate, assuming that
exactly, and that
a. d=0.15 m and l=30.0 m, both with negligible uncertainty, and h=5.33 ± 0.02 m. b. h=5.33 m and l=30.0 m, both with negligible uncertainty, and d=0.15 ± 0.03 m. c. d=0.15 m and h=5.33 m, both with negligible uncertainty, and l=30.00 ± 0.04 m.
What is the difference between a flare-nut wrench and a standard box wrench?
A) Box wrenches have only four sides and points, flare wrenches have six. B) The flare wrench heads are slotted to slip over the tubing. C) Flare-nut wrenches ratchet and box wrenches do not. D) A flare wrench is just a renamed box wrench.
When a liquid boils:
A) Its temperature drops as it boils. B) The temperature of a liquid is not related to its boiling point. C) Its temperature remains the same as it boils. D) Its temperature increases as it boils.