An opera singer in a convertible sings a note at 700 hz while cruising down the highway at 83 km/h. the speed of sound in the air is 343 m/s. part a what is the frequency heard by a person standing beside the road in front of the car?

A car is traveling at a constant velocity of 19 m/s when the driver puts on the brakes to accelerate it at - 1.4 m/s ^ 2 until stopped. How long in s) did it take the car to stop? answer must be a number only!

A devout halloweener not only dressed as an astronaut, but travelled to the moon for the full experience. The astronaut jumps on the moon with an initial upward velocity of 2.98m/s. If the acceleration of gravity on the moon is - 1.

How much heat does it take to raise the temperature of 0.10kg of gold by 25°C

Purse-seine fishing is known to be the safest fishing method for protecting dolphins.

A car slows down at - 5.00 m/s^2 until it comes to a stop after travelling 15.0 m. How much time did it take to stop?

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.