Imagine an experiment in which a 8 lb bowling ball and a 10 lb bowling ball are dropped from the fifth floor at the same time. The heavier ball will reach the ground first
a. true
b. false
Answer: b. false
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Consider the steel and concrete boundary shown in the figure and write the node equation for node n. Identify the maximum time step allowed for the explicit method of solving for temperatures.
What will be an ideal response?
A thin metallic shell of radius 40 cm has a charge of -25 nC on it. At the center of the sphere is a point charge of 35 nC. What is the electric field 50 cm from the center of the shell?
A. 400 N/C outward B. 560 N/C outward C. 360 N/C outward D. 360 N/C inward E. 560 N/C inward
The force of kinetic friction between two surfaces is dependent on the relative speed of the two surfaces
Indicate whether the statement is true or false
A resistor, R, is made out of a particular material with resistivity P. The cylindrically shaped resistor has length I and radius r. To get four times as much resistance in your resistor you could
1.make the radius four times as big. 2.make the radius half as big. 3.make the radius one quarter the size. 4.make the radius twice as big.