An exercise machine indicates that you have worked off 2.1 Calories in a minute-and-a-half of running in place. What was your power output during this time? Give your answer in both watts and horsepower.
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- Mountain climbers carry bottled oxygen when at very high altitudes, since the atmosphere contains less and less as you go higher up. a. Assuming that a mountain climber uses 3.92 liters of oxygen per minute, calculate how many liters of oxygen a climber would need for 11 h of climbing. (These are liters at sea level.) Note that only 40% of the inhaled oxygen is utilized; the rest is exhaled. b. How much useful work does the climber do, in joules, if he and his equipment have a mass of 97.5 kg and he gains 1150 m of altitude? c. What is his efficiency for the 11-h climb? Assume his total energy consumption is 1370 W.A car with mass of 1138 kg accelerates from 0 m/s to 40.0 m/s in 10.0 s. Ingnore air resistance. The engine has a 22.0% efficiency, which means that 22.0% if the energy released by the burning gasoline is converted into mechanical energy. What is the average mecanical power output of the engine? What volume of gasoline is consumed? Assume that the burning of 1.00 L of gasoline released 46.0 MJ of energy.After finishing 2 fried eggs, a sausage, and a cup of latte as breakfast at 8:30 am, Nancy starts biking at constant speed of 15 km/h. Food Energy content in Cal Fried egg 100 Sausage 286 Latte 260 Big apple 125 Slice of 380 pepperoni pizza 12 oz soda 160 Activity Metabolic power (W) Cycling at 15 km/h 400 Walking at5 km/h 280 a) What time Nancy will use up all the intake energy due to biking? b) If Nancy decide to walk back at 5 km/h for an hour then bike at 15 km/h, how many slice of pizza she needs to eat together with a can of 12 oz soda and a big apple as lunch?
- RYZEN A car is moving along a road at 25.0 m/s with an engine that exerts a force of 2,475.0 N on the car to balance the drag and friction so that the car maintains a constant speed. What is the power output of the engine? Your Answer: Fn NVIDIA Answer Type here to search alexa ENABLED units C 86°F Mostly sunny 4 10:32 AM ASUS ZenBook 14 13 14" Display in 13" Chassis Ultrafast PCIe SSD HDMI 92% Screen-to- Body Ratio Military- QuaA leaky 10-kg bucket is lifted from the ground to a height of 15 m at a constant speed with a rope that weighs 0.5 kg/m. Initially the bucket contains 45 kg of water, but the water leaks at a constant rate and finishes draining just as the bucket reaches the 15-m level. Find the work done. (Use 9.8 m/s2 for g.)We know from the reading that it is possible to move the same object two different distances and still do the same amount of work. Let's consider an example in which Jane pushes a block of ice up an incline while Kip lift the same block of ice vertically to the top of the same incline. See the figure below. (look at picture) We will assume that there is no friction between the surface of the incline and the block of ice. Both of these situations will require the same amount of work and that the result of lifting the ice block to some height imparts potential energy to the ice. In this activity, we will make various calculation to help us better understand the relationship between work and potential energy and the idea of conservation of energy. For this activity we will assume that the mass of the ice block is 5.6 kg and the vertical height of the incline is 2 m. This is the vertical distance that Kip must lift the block of ice. We will assume that the acceleration due to gravity is 10…