Which of the following is INCORRECT regarding analog and digital signals? A.
Analog signals must be interpreted while digital signals are a clear reading or display and are easier to monitor.

B.
Analog signals cannot be read by people, only by computers.

C.
When analog and digital signals are used together, the system is considered a hybrid.

D.
Analog and digital signals are used in speedometers in automobiles.

Astone is dropped from the upper observation deck of a tower, 250 m above the ground. (assume g = 9.8 m/s2.) (a) find the distance (in meters) of the stone above ground level at time t. h(t) = (b) how long does it take the stone to reach the ground? (round your answer to two decimal places.) s (c) with what velocity does it strike the ground? (round your answer to one decimal place.) m/s (d) if the stone is thrown downward with a speed of 2 m/s, how long does it take to reach the ground? (round your answer to two decimal places.) s

Estimate the magnitude of the electric field due to the proton in a hydrogen atom at a distance of 5.29×10 to the power of −11 m, the expected position of the electron in the atom.

Acircuit contain a 5-ohm, a3-ohm, and an 8-ohm resistor in series. what is the total resistance of the circuit