Which of these measurements has 3 significant digits? A) 29.3CM B) 290CM C) 0.0029CM D) 290. CM

Students in a chemistry class added 5g of zinc (Zn) to 50g of hydrochloric acid (HCl). A chemical reaction occurred that produced zinc chloride (ZnCl2) and 6g of hydrogen gas (H2).

What is your velocity if it takes you 40 seconds to walk around a circle of 50meters 3 times?

problem A newly established colony on the Moon launches a capsule vertically with an initial speed of 1.445 km/s. Ignoring the rotation of the Moon, what is the maximum height reached by the capsule

The average mass of an automobile in the United States is about 1.440 * 10^8. express this mass in kilograms

A centripetal force of 1,400 newtons acts on a car rounding a curve with a radius of 150 meters. If the car has a mass of 2,100 kilograms, find its velocity, in meters per second.

Why proton doesnt repll each other in nuclous of an atom?

A boy pulls his toy on a smooth horizontal surface with a rope inclined at 60 degrees to the horizontal. If the effective force pulling the toy along the horizontal surface is 5N, calculate the tension in the rope

How many grams of NO2 are in 3 moles of a nitrogen dioxide? 90.2g 138.2g 160g 0.07g

The method of heat transfer that plays a central role in transferring heat energy within the atmosphere and the ocean is A. convection. B. radiation. C. conduction. D. reflection.

You have arranged that the magnetic field in a particular region of space is due North with a value of 0.0040 T. An electron enters the field traveling to the West with a speed of 9.5 percent of the speed of light.