A one-way mirror works because its surfaces are half-silvered
Indicate whether the statement is true or false
T
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An electron has a ________ electric charge
Fill in the blank(s) with correct word
Three resistors, each of different value, are used in a circuit with a power source supplying 12 volts. For which of the following resistor combinations is the total power supplied the greatest?
a. This cannot be found until it is known which resistor is in series with the parallel pair. b. all three resistors in series c. two of the resistors in parallel with the third resistor in series with the parallel pair d. all three resistors in parallel
A projectile's horizontal velocity component (ignoring air resistance)
a. does not change. b. changes most rapidly near the bottom of its trajectory. c. changes at a variable rate. d. changes at a constant rate.
A boulder is thrown into a deep lake. As it sinks deeper and deeper in the water the buoyant force
1) increases. 2) decreases. 3) remains the same. This is because the 4) pressure increases with greater depth. 5) pressure decreases with greater depth. 6) volume and weight of displaced water are the same at any depth.