Potential Final Exam Need some instructions here. 4 points Q A car travels 78.26 miles in 6.63 hours. What is the car's average speed? Round your answer to two decimal places. Type your answer... 4 points > In the previous problem, the units for average speed were . meters per second miles per hour kilometers per hour meters per second squared 4 points A car accelerates from rest to 29.69 meters per second in 7.29 seconds. What is the car's rate of acceleration? Round your answer to two decimal places. Type your answer... 4 points Q In the previous problem, you calculated the acceleration of an object from rest. What were the units for the acceleration value you found? newtons miles per hour meters per second meters per second squared 4 points Q A cart with a mass of 67.32 kilograms accelerates from 2.811 to 7.245 meters per second in 3.73 seconds. Find the net force on the cart. Round your answer to two decimal places. Type your answer... a 4 points Q When you nd the net force on an object, the units are always which of the following? watts newtons joules calories 4 points Q A 0.08 kilogram bullet is launched with a muzzle velocity of 847.23 meters per second. It is red from a rie with a mass of 3.14 kilograms. What is the recoil velocity of the weapon? Round your nal answer to two decimal places. 0 Type your answer... 4 points 5 Which of the following can be considered units for momentum and impulse? Select more than one. newtons per meter newton * seconds kilogram * meters per second kilogram*meters per seconds squared n 4 points a Q A 2.50 kilogram object is 291.04 meters above the ground. What is the object's potential energy at this height? Round your nal answer to two decimal places. Type your answer... Match the physical quantity to its appropriate unit(s). electrical current electrical charge electrical resistance electrical potential (voltage) kinetic, potential energy work heat, internal energy force power 11 4 points A construction crew needs a crane to lift a weight of 2,421.67 newtons up to the top floor of a building that is 14.85 meters above the ground. The supervisor needs a crane that can do this in 81.30 seconds to do the job in the time allotted to get the construction materials to the top floor. How much power should the crane have? Round your final answer to two decimal places. Q Type your answer...4 points Q In the previous problem, what were the units of power? newtons joules watts seconds 4 points Density is how much you have in a volume. If I put 2.70 kilogram(s) of carbon dioxide in an empty 7.10 m3 bottle, what is the density of the gas after lling it? Round to nearest 2 decimals. Type your answer... 4 points In the previous problem, what were the units of density? kg/m3 kg/m2 N/m3 lbs/m3 4 points Q One gallon is 3.79 litres (1 gal = 3.79 litres). Milk has a density of 8.6 pounds per gallon (8.6 lb/gal). How many gallons can we get with 37.18 lbs of milk? Round y 0 answer to 2 decimal places. Type your answer... 4 points Which of the following is a unit of weight density? lbs/m2 N/m2 kg/m3 N/m3 4 points One US gallon is 231 in3 A garden hose with a cross sectional area of 0.38 in2 has a ow of water of 12.48 in/s. How long will it take to ll a gallon jug? Type your answer... 4 points In the previous problem, what is the correct unit symbol for the result time? min 5 Hz Iv? 4points Consider a large interferometer that uses a lazer with the wavelength of 1,009.70 nm (1009.70 x 10'9m). What is the frequency of the photons emitted by this beam in hertz? Type your answer... 4points Q Which of the following is a unit appropriate for wave speed? Hz ft/s2 m/s Js 4 points 5 O In the above circuit there is a 2.07 volts battery and three resistors with the following values: R1 = 2.57 ohms, R2 = 7.41 ohms, and R3 = 5.43 ohms. Find the equivalent resistance in ohms for this circuit. Type your answer... 4points Q In the above circuit there is a 1 volt battery and two resistors with the following values: R1 = 10 ohms and R2 = 10 ohms. Find the equivalent resistance in ohms for this circuit. Type your answer... 4points Q Two resistors are connected in parallel with an 16 volt battery. The resistors have values of R1 = 4 ohms and R2 = 87 ohms. What is the current in amperes for this circuit? Round your answer to two decimal places. Type your answer... 4 points Two resistors are connected in series with an 37.29 volt battery. The resistors have values of R1 = 3.36 ohms and R2 = 5.48 ohms. What is the current in amperes for this circuit? Round your answer to two decimal places. Type your answer... Q 4 points The speed of light in a transparent rod is 2.27 x 108 m/s. What is the index of refraction for this material? Type your