You have a 210-? resistor and a 0.410-h inductor. suppose you take the resistor and inductor and make a series circuit with a voltage source that has a voltage amplitude of 31.0v and an angular frequency of 260rad/s . a) what is the impedance of the circuit? b)what is the current amplitude? c) what is the voltage amplitude across the resistor? d)what is the voltage amplitudes across the inductor? e)what is the phase angle ? of the source voltage with respect to the current? f)does the source voltage lag or lead the current? g)construct the phasor diagram. draw the force vectors with their tails at the dot.

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.