Aspherical balloon with a radius of 10.0 m is filled with helium. the weight of the balloon and the gondola is 1100 n. (the volume of a sphere is given by v = (4/3)(pi a.) draw a free body diagram for the balloon clearly labeling all forces. write down the equation which is obtained from newton’s second law. b.) what is the buoyant force on the balloon? c.) what is the acceleration of the balloon? d.) what is the maximum additional payload that could be carried by the balloon?

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?

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix. b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds. c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer. d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.

Positrons are spontaneously emitted from the nuclei of