What is the average velocity of a car that travels 30 kilometers due wet in 0.50

hour?

0 60 km/hr west

O 15 km/hr

O 60 km/hr

O 15 km/hr west

Louis Pasteur is credited with developing the germ theory of disease, but many scientists had proposed the idea before Pasteur did.

In each of the four situations described below, something is being heated. in which case is the heating caused by radiation? a. a heat lamp keeps a hamburger warm. b. cooking an egg in a skillet. c. hot air pouring from a heat vent. d.

In terms of density and humidity, which conditions characterize a high-pressure area? A. high density, high humidity B. high density, low humidity C. low density, low humidity D. low density, high humidity

An ideal gas undergoes isothermal compression from an initial volume of 4.81 m^3 to a final volume of 2.78 m^3. There is 7.25 mol of the gas, and its temperature is 23.1°C.

A yo-yo can be thought of as a solid cylinder of mass m and radius r that has a light string wrapped around its circumference (see below). One end of the string is held fixed in space.

Which of the following statements about electrons is not true? A) Electrons orbit the nucleus rather like planets orbiting the Sun. B) Within an atom, an electron can have only particular energies.

In longitude waves, the medium moves parallel to the direction of energy transport

Thomsonâs experiment is credited with the discovery of which particle?

When you drop a pebble from height h, it reaches the ground with kinetic energy k if there is no air resistance. from what height should you drop it so it will reach the ground with twice as much kinetic energy?

Explain two ways that technology has had a positive impact on the environment and two ways that it has had a negative impact on the environment.