Rounded to the nearest whole number, how many protons are in an atom of krypton?

A 36

B 48

C 84

D 120

How do elements change as you move to the right along a row in the periodic table

A material that provides resistance to the flow of electric current is called a (n)

If a cart of 2 kg mass has a force of 8 newtons exerted on it, what is its acceleration?

Matter is anything that a. is important to human society. b. contains two elements combined chemically. c. has mass and takes up space. d. has only one physical state.

When a space shuttle was launched, the astronauts aboard experienced and acceleration of 29.0 m/s. If one of the astronauts had a mass of 69.0 kg, what net force in newtons did the astronaut experience?

If a pressure gauge measure an increase in 3*10^ (5) Pa on an area of 0.7 m^2, calculate the increase in the force applied to the area?

Which of the following is an example of potential rather than kinetic energy? a. water rushing over Niagara Falls b. a molecule of glucose c. a crawling beetle foraging for food d. light flashes emitted by a firefly

If a force of 15 newtons [N] is applied to a surface and the pressure is measured as 4,000 pascals [Pa], what is the area of the surface in units of square milimeters [mm2 ]?

An engineer has the task of producing an aluminum alloy with a density of 3.0 grams per cubic centimeter. She comes up with the perfect alloy and saves a sample of it. Which mass and volume measurements correspond to this sample? 7 g and 2.

What must be your car's average speed in order to travel 235km in 3.25 hours?