Given that the speed of sound in air is 330m/s, calculate the frequency of a note which setup a wavelength of 5cm in air. Is this frequency within the limits of audibility of the human ear?

A series circuit has two 5.0 on resistors and a power source of 9.0 volts. How will the current be affected and what will be another resistor (with a resistance of 7.5 ohms) is added to the circuit?

What is ultrasound? What is its use in industry? Why can't we use longer wavelengths for such uses?

Heat gained minus work fine is equal to what?

A building that is utilizing large windows on its southern side for heating is an example of the use of

A cannonball and a marble roll smoothly from rest down an incline. Is the cannonball's (a) time to the bottom and (b) translational kinetic energy at the bottom more than, less than, or the same as the marble's?

What is the part of the cell that stores food?

2. A circuit consists of a 10.0-ohm resistor, a 15.0-ohm resistor, and a 20.0-ohm resistor connected in parallel across a 9.00-volt battery. What is the equivalent resistance of this circuit? (1) 0.200 12 (3) 4.62 1 (2) 1.95.22 (4) 45.012

What technology makes up the transducer? a. A phased array c. A PET scan b. An x-ray d. A laser

Explain how birthrates and death rates influence the size of population.

What happens to the resistance of a wire as its length increases? A. The resistance decreases. B. The resistance is not affected by a change in wire length. C. The resistance alternates between high and low values. D. The resistance increases.