Explain what cause air pressure in your own words. Why do aircraft need pressurized cabins?

Accidentally a glass filled with water dropped and broke. This an example of a? a. chemical change b. chemical property c. physical change d. physical property

Which statement is part of Dalton's atomic theory? A. Atoms are composed of protons, neutrons, and electrons. B. Elements can have atoms that are isotopes. C. One type of atom cannot be changed to another type by a chemical reaction. D.

Why do protons repel protons but attract electrons?

Which of the following statements is not true? A. Science is a method of answering theoretical questions. B. Technology is a method of solving practical problems. C. Technology may produce problems for society. D.

A sound-producing object is moving toward an observer. The sound the observer hears will have a frequency ___ that actually being produced by the object. higher than lower than same as

The standard metric units of measurements for electric field strength are?

What steps are involved in converting potential energy to kinetic energy, or kinetic energy to potential energy?

A 50 Newton box is moved a distance of 12 meters. How much work was done on the box?

An alloy is made of a material of specific gravity 7.87 and another material of specific gravity 4.50. The alloy of mass 750g has an apparent weight of 6.6N when totally immersed in a liquid of specific gravity 0.78.

A ball with a mass of 3 kg moving at 5 m/s collides with a 9 kg ball at rest. After the collision, the impacting (3 kg) ball bounces back at a speed of 2.5 m/s. How fast does the 9 kg ball move and in what direction