Why does the frequency of a siren get higher as an ambulance using that siren gets closer?

If 51.9 C of charge are transferred in a specific lightning strike and the potential difference is ∆V = 10.93 MV, how much energy is released in this lightning strike? (in J

The purpose of striking the ball in a volleyball game is to: 1. Place the ball in motion 2. Change the direction of the ball's motion 3. Slow the ball's motion 4. All of the above

SI base unit used to measure the amount of a substance

What type of radiation dose a nuclear power plant produce

A force of 5.25 newtons acts on an object of unknown mass at a distance of 6.9 * 108 meters from the center of Earth. To increase the force to 2.5 times its original value, how far should the object be from the center of Earth?

What happens when you put a galvanized zinc nail in copper solution for an hour? Does is rust or turn different color? What is the outcome? What happens after an hour in vinegar?

Psuedopod in a sentence

Study the scenario. As a spacecraft moves beyond Pluto, its thrusters are turned on for a short time to boost its speed to approximately 32,500 mi/h. The thrusters are then turned off.

What produces an electromagnetic wave? A) An oscillating or accelerating electric charge B) An electric charge moving at constant velocity C) A static electric charge D) A magnetic monopole moving at constant velocity

A physics book has a height of 25.8 cm, a width of 20.2 cm, and a thickness of 2.90 cm. (a) What is the density of the physics book if it weighs 20 N? kg/m³ (b) Find the pressure that the physics book exerts on a desktop when the book lies face up.