Question 4 How much power is required to lift a heavy solid concrete beam with mass 119.69 kg upward with a constant speed of 8.95 m/s using a crane? watts Input only the number. Round off to the nearest whole number. A Moving to the next question prevents changes to this answer. 30°C acen 3ms FHD 44Hz FIL FI2 F7 FB F9 F1O Ser Lk F4 FS F6 Pause F3 F2 CD- Esc

Question 4 How much power is required to lift a heavy solid concrete beam with mass 119.69 kg upward with a constant speed of 8.95 m/s using a crane? watts Input only the number. Round off to the nearest whole number. A Moving to the next question prevents changes to this answer. 30°C acen 3ms FHD 44Hz FIL FI2 F7 FB F9 F1O Ser Lk F4 FS F6 Pause F3 F2 CD- Esc

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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PROBLEM 4 A heat pump is used to meet the heating requirements of a house and maintain it at a comfortable temperature. On an average winter day, the house is estimated to lose heat at a rate of 80,000 kJ h¯¹. The heat pump has a COP of 2.5 under these conditions. Questions: (a) Determine the net power input required by the heat pump, in kW. (b) The rate at which heat is extracted from the cold outdoor air, in kW.
A typical avocado has 180 Calories. If all this energy could be used to lift a bucket of water weighing 40 N, through what vertical distance could the bucket be lifted? (1 calorie = 4.184 J and 1 Calorie = 103 calories) a. 1.72E+6 m b. 3.01E+7 m c. 7.53E+5 m d. 1.88E+4 m
1. A person with a basal metabolic rate of 90 W has a continuous (24-hr) average power output, without any physical exertion, of 90 W. If this person consumes 2500 food calories per day and burns 500 calories per day doing additional physical activity, will they gain or lose weight?
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The capacity of a physical system to do .6 .. work is called • Energy • Kinetic energy • Work If the diver goes to 40 m underwater by .7 holding a full breath of air, he would have . of pressure in his lungs • 3 atm • 40 atm • 4 atm The first signs of . occur at about.8 3000 m and are seen as slight changes in * pulse and breathing rate · Barometric Formula • Mountain sickness • Oxygen Poisoning
bacon-cheddar-double-burger meal along with A 65.0-kg mountain climber just ate a Johnny Rocket's two peanut butter milkshakes, which have 5810 Calories (5810 kilocalories). Assume she can convert these calories into energy with 100% efficiency and use the fact that 1 kcal = 4186 J. Calculate how many times she could climb up Mt. Everest - the world's tallest mountain. The height of Mt. Everest is 8840 m.
A bathroom extractor fan being sold on Amazon has a duct diameter of 10.0 cm. It extracts air from a bathroom at a rate of 70.0 m3/h and the power supplied to the fan is 7.0 W. With what efficiency does the extractor convert electrical power into the kinetic power associated with the air-motion? Take the density of air to be 1.2 kg/m3 and assume laminar air flow.
A car uses total energy of 2500 J and output is 750 J. efficiency of car is A. 50% B. 30% C. 25% D. 80%
A heat engine does 8.1 × 107 J of work when supplied 10.9 × 107 J. What is itsefficiency?
1919 by + → C Ims.cisjubail.gov.sa/webapps/assessment/take/lau Apps M Gmail YouTube Maps Calorie Calculator 直 v Question Completion Status: QUESTION 7 is the ability to do work. L QUESTION 8
A 1.5-hp blender spends how much energy in 2 minutes? O 3J 0.75 J O 2,250 J O 135,000 J O None of the choices given.
Problem 3: Suppose a subject on a treadmill puts out work at the rate of 95 W while consuming oxygen at the rate of 2.00 L/min. Assume this rate of oxygen consumed corresponds to a power output of 700 W. What is the percent efficiency of the subject? 7 (%) = ||