A pendulum with a bob of mass 150 g has the same period as a thin rod (not massless) of the same mass and length 17 cm when the rod is pivoted about its end. What is the length of the pendulum?
A. 12 cm
B. 15 cm
C. 22 cm
D. 27 cm
D. 27 cm
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A planet's density can be determined if it is observed to periodically transit in front of its parent star causing eclipses
Indicate whether the statement is true or false
An irreversible engine operating between the temperatures of 550 K and 300 K extracts 1.20 kJ of heat from the hot reservoir and produces 0.450 kJ of work. How much entropy is created in the process?
A) 0 J/K B) 0.44 J/K C) 0.73 J/K D) 0.32 J/K E) 0.68 J/K
A 1.5 V flashlight battery, a 10 ohm resistor, and a flashÂlight lamp are available. How should the lamp be connected in a circuit so that it would glow the brightest?
A. Connect it in series with the resistor and battery so that the bulb is next to the positive terminal of the battery B. Connect it in parallel with the battery and the resistor C. Connect it directly to the battery; don't use the resistor D. Connect it in series with the resistor and battery so that the bulb is next to the negative terminal of the battery
When pore spaces become completely filled with water, the soil is considered to be at
What will be an ideal response?