31. Why is the surface temperature of Venus hotter than Mercury�s? A. The carbon dioxide in Venus� atmosphere prevents the heat from escaping. B. Venus is larger than Mercury. C. Venus is closer to the Sun. D. Venus rotates slower than Mercury. E. Venus has

Determine the magnitudes of the currents in each resistor shown in the figure (Figure 1) . The batteries have emfs of E1=9.0 V and E2=12.0V and the resistors have values of R1=27 ohms, R2=11 ohms , and R3=41 ohms.

Determine the currents,, andin the figure(Figure 1). Assume the internal resistance of each battery is

1.) When a sound wave travels horizontally across the room from left to right, the air

Use the exact values you enter to make later calculations. Three capacitors C1 = 2.5 �F, C2 = 12.0 �F, and C3 = 15.0 �F are connected as shown with a battery of voltage V = 18 V. (When entering units, use micro for the

An electron with kinetic energy of 2.0 10-16 J is moving to the right along the axis of a cathode-ray tube as shown below. There is an electric field = (2.0 104 N/C) in the region between the deflection plates. Everywhere else, = 0.

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Find the current through the 14.4 ohm lower right resistor.Answer in units of A