What is the difference between mass and weight? Mass is the number of atoms an object is made up of. For example a living being is made up of Carbon, Oxygen, Nitrogen, Sulphur, Phosphorus, Hydrogen, and other atoms. So if you traveled to the moon, your mass will be the same as on Earth. Why? Because you are a whole person, nothing taken away or added. Weight is different, because weight has to do with the force of gravity which is different on Earth versus other celestial objects like the moon, Mars, etc. On Earth, gravity is 9.8 m/s2 or 9.8 meters per second squared. The moon is ⅙ the gravity on Earth or 9.8 m/s2 times ⅙. 1. So gravity on the moon would be 9.8 m/s2 divided by 6. What is the gravity on the moon? Don’t forget to include the units m/s2 .

What is the scientific definition of energy that relates to work

1. how much energy is needed to raise the temperature of 40.0 g of argon from 25c to 40c? the specific heat capacity of argon is 0.520 j/(g·k) 2a. 23.0 ml of 0.100 m hcl (standard) are added from a buret to neutralize 50.0 ml of an unknown basic solution. 2b. if the oh- produced in the previous reaction came from ca(oh)2, then what is the molarity of the ca(oh)2? 3.calculate the new freezing-point of a solution when 60.5 grams of cacl2 solute is dissolved in 0.612 kg of water. 4. what is the maximum number of moles of alcl3 that can be produced from 5.0 mol al and 6.0 mol cl2? 5. a sample of oxygen gas has a volume of 150 ml when its pressure is 0.923 atm. if the pressure is increased to 0.987 atm and the temperature remains constant, what will the new volume be? 6. nitrogen gas in a closed container at a temperature of 100.0 oc and 3.0 atm is heated to 300 oc. what is the pressure of the gas at the higher temperature?

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.