A sound wave that has a wavelength of 2 m in room-temperature air has a frequency of about

A. 170 Hz.

B. 1360 Hz.

C. 2040 Hz.

D. none of the above

Steep safety ramps are built beside mountain highways to enable vehicles with defective brakes to stop safely. A truck enters a 750-ft ramp at a high speed v0 and travels 540 ft in 6 s at constant deceleration before its speed is reduced to v0/2.

Examine the droppler effect illustration above. Assume the red dot is a police car with its siren on. Which direction is the police car traveling

A train travels 2975 miles in 3 days how far is it moving per day?

A cell provides 6 V to an LDR. The current through this LDR is measured and is found to be 3 A. What is the resistance of the LDR?

How did JJ Thomas discovery affect the model of the Atom

Suppose gene A on the left chromosome is damaged and no longer functions. what form of the trait would show? Why?

I'm completely lost in physics, the Kinematics and dynamics units ... My exam is coming up ... If a biker travelling at 6.4m/s sees biker B 34m ahead on the road travelling 4.7m/s. How far will biker B get before biker A catches him?

When scientists record the volume of a gas, why do they also record the temperature and the pressure

Why is velocity most important in space launch?

A person walks up a stalled escalator in 25 s. When standing on the same escalator, now moving, she is carried up in 16 s. How much time in seconds would it take her to walk up the moving escalator?