During a chemical reaction, what remains constant? composition or tempature or or energy or bonds

A particle of mass 7.00 10-8 kg and charge 7.8-µc is traveling due east. it enters perpendicularly a magnetic field whose magnitude is 29.0 t.

Do any of the planets have flowing water?

As a woman walks, her entire weight is momentarily placed on one heel of her high-heeled shoes. Calculate the pressure exerted on the floor by the heel if it has an area of 1.83 cm2 and the woman's mass is 54 kg. Express the pressure in Pa.

Which object has the greatest inertia? (1) a 15-kg mass traveling at 5.0 m/s (2) a 10.-kg mass traveling at 10. m/s (3) a 10.-kg mass traveling at 5.0 m/s (4) a 5.0-kg mass traveling at 15 m/s

Why does an object in motion stay in motion unless acted on by an unbalanced force? A) because forces are what stop and start motion B) because balanced forces can not exist in nature C) because motion is the inherent state of all matter D) because

Calculate the energy released as heat when 51.60 g Cu 2 O (s) undergo oxidation at constant pressure.

During summer vacation, Juan traveled a total distance of 400 miles. His trip took 8 hours. What was the average speed during his trip?

Where Pabs is absolute pressurePg, is gauge pressure, and Patm is atmospheric pressure. For example, if your tire gauge reads 34 lb/incz (pounds per square inch), then the absolute pressure is ...

The tip of a triangle is held 12.0 cm above the surface of a flat pool of water. A submerged swimmer in the pool sees the tip of the triangle at what distance above the water? Let the indices of refraction nwater = 1.33 and nair = 1.00.

What is a lever used for?