5450 m3 blimp circles Busch Stadium during the World Series suspended in the earth's 1.21 kg/m3 atmosphere. The density of the helium in the blimp is 0.178 kg/m3. a) What is the buoyant force that suspends the blimp in the air? B) How does this buoyant force compare to the blimp's weight? C) How much weight, in addition to the helium, can the blimp carry and still continue to maintain a constant altitude?

An engineer designs a roller coaster so that a car travels horizontally for 162 ft, then climbs 127 ft at an angle of 31.0° above the horizontal. it then moves 127 ft at an angle of 46.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

Which two particles are found in the center of an atom