A horizontal spring with k = 100 N/m is compressed by 10 cm by a 100 g mass. a. How much elastic potential energy does the compressed spring store?

b. How much elastic potential energy would the compressed spring store if it were compressed the same distance by a 300 g mass?

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

A40.0 l tank of ammonia has a pressure of 12.7 kpa. calculate the. volume of the ammonia if it’s pressure is changed to 8.4 kpa while its temperature remains constant.

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?