Question 4 (1 points) (#294621) {Drag} Consider a car with an effective cross-sectional area of 2.5 m, and a drag coefficient of 0.25. The car is moving at a speed of 33.7 m /s through air with a density of 1.2 kg/m3. Calculate the drag force on the car due to air resistance. Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8 Enter answer here N No answer submitted CHECK ANSWER 0 of Unlimited checks used Question 5 (1 points) (#972113) {Drag} The drag force due to air resistance on a soccer ball traveling through the air at 20 m/s is 2.3 N. What is the drag force on that same soccer ball when it is moving through the air at 25.5 m/s Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8 Enter answer here N No answer submitted CHECK ANSWER ents Back Scroll To TopQuestion 5 (1 points) A mercury barometer is an instrument in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column. The height of the column varies with atmospheric pressure. What is the height of the mercury column if you are on top of a mountain where the pressure of the atmosphere is 0.367 atm? The density of mercury is 13.6 . 103 kg/m3. Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8 Enter answer here m No answer submitted CHECK ANSWER 0 of Unlimited checks usedQuestion 6 (1 points) (#279299) {Drag} What is the terminal velocity for a 3.79 kg bowling ball falling through air? Use 0.45 for the drag coefficient of the bowling ball and 1.22 kg/m3 for the density of air. A standard bowling ball has a diameter of 21.6 cm Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8 Enter answer here m/s No answer submitted CHECK ANSWER 0 of Unlimited checks used SHOW HINT Question 7 This question contains multiple parts. Make sure to read all the instructions and answer each part. (#879293) {Drag} A 10-cm diameter metal ball falls through the air at its terminal velocity of 34.8 m/s.No answer submitted CHECK ANSWER 0 of Unlimited checks used Part b (1 points) Now imagine that we take the original ball and we double the diameter of the ball while keeping its mass and its surface properties the same (i.e., same drag coefficient, C). One way we could do this would be to make a larger version of the ball that is either partially hollow, or made of a less-dense material inside. What would the terminal velocity of this new ball be? Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8 Enter answer here m/s No answer submitted CHECK ANSWER 0 of Unlimited checks used Part c (1 points) Next, imagine that we take the original ball and we double the diameter of the ball but without changing the material or structure of the ball in any way. (Hint : with the same material and structure, the volume of the ball would increase as the diameter is increased, and the mass will increase proportionally to the volume). What would the terminal velocity of this new ball be? Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8 Enter answer here m/sQuestion 7 This question contains multiple parts. Make sure to read all the instructions and answer each part. (#879293) {Drag} A 10-cm diameter metal ball falls through the air at its terminal velocity of 34.8 m/s. Part a (1 points) Now imagine that we double the mass of the ball while keeping its diameter and its surface properties the same (i.e., same drag coefficient, C). One way we could do this would be to replace some portion of the inside of the ball with a higher density metal. What would the terminal velocity of this new ball be? *Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8 Enter answer here m/s No answer submitted CHECK ANSWER 0 of Unlimited checks used Part b (1 points) Now imagine that we take the original ball and we double the diameter of the ball while keeping its mass and its surface properties the same (i.e., same drag coefficient, C). One way we could do this would be to make a larger version of the ball that is either partially hollow or made of a less-denseQuestion 2 (1 points) Assuming you dive in a swimming pool to a depth of 3.96 meters and do not equalize your ears (so that the pressure inside your ear canal remains at 1 atm). What would be the force on your ear-drum if its area is 5.0x 10-5 m?? Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8 Enter answer here No answer submitted CHECK ANSWER 0 of Unlimited checks used Question 3 (1 points) A full-term fetus typically has a mass of 3.82 kg. What pressure does the weight of such a fetus apply to the mother's bladder, assuming it is supported over an area of 91.7 cm- "Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8 Enter answer here Pa No answer submitted CHECK ANSWER 0 of Unlimited checks used