Explain why machines are never 100% efficient.

Is the amount of energy in a sound wave per unit of time and is also related to the loudness of a sound.

As taylor swift stood knee-deep in the ocean she noted how high the waves came up on her compared to the day before which property of waves was taylor observing _A. Frequency _B. Wavelength_C. Speed_D. Amplitude

A gas with volume of 3 L and a pressure of 1 atm is moved to a new environment where the gas's volume decreases to 1.50 L. What is the new pressure on atm assuming temperature is held constant

a plan on a search mission flew east from an airport, turned, and flew west back to the airport. the plane cruised at 200 km/h when flying east and 300 km/h when flying west.

The Inverse Square Law applies to: intensity of second Gravitational force Intensity of light Electric force Magnetic Force

A set of data is collected from a simple circuit with a 20 resistor and is represented in the table

A skydiver of mass m jumps from a hot air balloon and falls a distance d before reaching a terminal velocity of magnitude v. Assume that the magnitude of the acceleration due to gravity is g. a.

8. What happens to force when mass is increased?

Give an example of ionic and covalent bond, and explain and make an example for each.

Which of these is the best reason for proper nutrition? A. To ensure that you will be skinny B. To protect yourself against certain diseases C. To improve your intelligence D. To ensure that you will get good grades