(9%) Problem 11: A balloon filled with helium gas has an average density of Q = 0.36 kg/m. The density of the air is about Q = 1.23 kg/m. The volume of the balloon is V = 0.048 m. The balloon floats upward with acceleration a. a 50% Part (a) Express the net force F on the balloon in terms of its weight W and the buoyancy force Fb on it, assuming upward is the positive direction. 50% Part (b) Calculate the numerical value of the acceleration a in m/s. a = || sin() cos() tan() cotan() asin() acos() atan() acotan() sinh() 7 89 HOME E 4 56 1 2 3 cosh() tanh() cotanh() O Degrees Radians + - 0 END VO BACKSPACE DEE CLEAR Grade Summary Deductions Potential Submissions 0% 100% Attempts remaining: 100 (0% per attempt) detailed view Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: 3 Feedback: 0% deduction per feedback.