Acircuit contains a resistor in series with a capacitor, the series combination being connected across the terminals of a battery. the time constant for charging the capacitor is 4.6 s when the resistor has a resistance of 1.4 x 104 ω. what would the time constant be if the resistance had a value of 5.6 x 104 ω?

Aturntable a is built into a stage for use in a theatrical production. it is observed during a rehearsal that a trunk b starts to slide on the turntable 10 s after the turntable begins to rotate. knowing that the trunk undergoes a constant tangential acceleration of 0.31 m/s2, determine the coefficient of static friction between the trunk and the turntable.

This is the number of complete movements of a wave per second.

Convection currents are caused by differences in what two things?