During a workout, a person repeatedly lifts a 16-lb barbell through a distance of 1.1 ft. How many “reps” of this lift arerequired to work off 150 C?
Q: During a workout, a person repeatedly lifts a 16-lb bar- bell through a distance of 1.1 ft. How many…
A:
Q: How much energy would you consume daily if you kept a lightbulb of 20 watts on all day long?
A: A lightbulb is rated as 20 Watt which is indicating the power of the bulb. P = E/t Power is…
Q: As a gasoline engine is running, an amount of gasoline containing 16,000 J of chemical potential…
A: The work done by the engine, W=4000 J The input chemical energy, Einput=16000 J
Q: A student evaluates a weight loss program by calculating the number of times she would need to climb…
A:
Q: An engine doing work isothermally takes in 10kJ and exahusts 1kJ. What is the efficiency of the…
A: Heat takes the engine, Heat exhausts the engine,…
Q: A weightlifter curls a 28 kg bar, raising it each time a distance of 0.55 m. How many times must…
A:
Q: 126 J of heat are extracted from the inside of a fridge. If its COP is 4, how much heat in joules…
A:
Q: A hot water heater in a residential home runs for an average of 2.2 hours per day with a heat energy…
A:
Q: An engine, operating with an efficiency of 0.225, delivers 8.10 ✕ 105 J each minute. What is the…
A:
Q: Convert 7.87 x 103 cal to the equivalent number of kilocalories (also known as Calories, used to…
A: Consider the conversion formula as given below. 1 kcal=103 cal 1 cal=4.184 J
Q: A hot water heater in a residential home runs for an average of 2.5 hours per day with a heat energy…
A: Solution-Given thatAverage running hour of water heater per day (t)=2.5 hours=2.5×60×60 seconds=9000…
Q: As a gasoline engine is running, an amount of gasoline containing 11,100 J of chemical potential…
A: Given Data: The input energy is: Qi=11100 J The output energy is: Qo=3700 J
Q: The total consumption of electrical energy in the United States is about 1.37 x 10¹9 joules per…
A: Total consumption of the electrical energy
Q: 50 g of water is split into hydrogen and oxygen using electrolysis at 27oC. Calculate the work done.
A: Given: mass of water = 50 g temperature T = 27o C = 27+273 =300 K Knowns: atmospheric pressure P…
Q: A PHYS 1510 student was working on a robotics project. The joints on the machine they were building…
A:
Q: A 150 Hb.- ball initially on the top of a 20ft ladder is d ropped and hits the ground.With re…
A: Given : Mass of ball = 150 lb Initial Velocity of ball = 0 ft/s Initial height of ball = 20 ft
Q: 9. A physics student decides to “burn off” some Calories by climbing a ladder. As the ladder is…
A: Part (a) Given data: The mass of the student is m=75 kg. The calories to burn off is E=1 Calorie…
Q: Problem 1: Suppose a man does 35.5 kJ of work with an efficiency of 4.95 %. How much food energy, in…
A: Given Data, Work Done by the man (W)=35.5 kJ Efficiencyη=4.95 %
Q: A(n) 88-kg sprinter accelerates from rest to a speed of 11.0 m/s in 4.2 s. (a) Calculate the…
A: Given that, Mass of the sprinter is m = 88 kg. The sprinter accelerates from rest thus initial…
Q: Suppose you spend 30.0 minutes on a stairclimbing machine, climbing at a rate of 90.0 steps per…
A: The efficiency of the machine is
Q: A hot water heater in a residential home runs for an average of 3.2 hours per day with a heat energy…
A: Given Data:- The number of hours per day that the heater runs: 3.2 h/day=3.2×3600 s/dayThe energy…
Q: A power plant burns coal and generates an average of 615.0 MW of electrical power while discharging…
A: Given Information:- Electrical power generated by the plant is E=615.0 MW Waste heat H=1020.90 MW…
Q: A heat engine extracts 45.0 kJ from the hot reservoir and exhausts 40.0 kJ into the cold reservoir.…
A: The work done by heat engine: W=QH-QC Efficiency η=1-QCQH Given QC=40kJ QH=45kJ
Q: As a gasoline engine is running, an amount of gasoline containing 13,600 J of chemical potential…
A: Given: Input energy, E=13600 J Work done, W=3400 J
Q: 8) A 40 kg child stands at the edge of a uniform cylinder Merry-Go-Round of mass 80 kg and radius 2m…
A: Given Mass of child m=40kg Mass of merry go round M=80kg radius r=2m Initial angular speed ω…
Q: A hot water heater in a residential home runs for an average of 2.2 hours per day with a heat energy…
A: Given : Average running time of hot water heater = 2.2 hrs. per day = 2.2 * 60 * 60 = 7920 s Heat…
Q: A 46-kg woman eats a 522 Calorie (522 kcal) jelly doughnut for breakfast. (a) How many joules of…
A: Given: mass of woman, m = 46 kg doughnut jelly energy, E= 522 calorie To Find: (a) Joule of energy…
Q: The engine of a large ship does 1.97 1010 J of work with an efficiency of 8.60%. (a) How much…
A: Given : W = 1.97 x 1010 J e = 8.60% = 0.086
During a workout, a person repeatedly lifts a 16-lb barbell through a distance of 1.1 ft. How many “reps” of this lift are
required to work off 150 C?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
- Let W = (2.70 ✕ 105 J) ln(Vf /Vi). Solve for the unknown quantity in each of the following cases: (a) the final volume Vf is three times the initial volume Vi W= ______Joules (b) the initial volume is 1.00 m3 and the work W is 3.25 ✕ 105 J Vf = ______ m3A 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.A 361-W heat pump operates between the ground, whose temperature is 6.2, and the interior of a house at 20.1. What is the theoretical maximum amount of heat per hour that the heat pump can supply to the house? Express your answer in MJ, to at least one digit after the decimal point.
- An asteroid made out of iron (7860 kg/m3) strikes the Earth in an areawhere the oceans are very deep. The velocity of the asteroid upon impact isthe same for most debris hitting the Earth’s atmosphere, 30 km/s.The difference in potential energy from orbit to ground is negligible at thisspeed. Assuming that 80% of the asteroid’s kinetic energy is transferred toheating the water, what volume of water (assuming a density of 1000 kg/m3)will be vaporized? We will assume that the water is taken from 70o F tothe point that it becomes steam. Also, assume that the asteriod is spherical,with a radius of 750 m.An engine receives 660 J of heat from a hot reservoir and givesoff 420 J of heat to a cold reservoir. What are (a) the work doneConvert 7.13 ✕ 103 cal to the equivalent number of kilocalories (also known as Calories, used to describe the energy content of food), and joules. (a) kilocalories ?kcal (b) joules ?J
- An aluminum rod is 30cm long at 33°C and has a mass of 330g. If 13,000 J of energy is added to the rod by heat, what is the change in length of the rod? Do not use scientific notation and enter your answer in m.46:56 WLwvimdGI A 52-kg package is lifted to the top shelf in a storage bin that is 4 m above the ground floor. How much increase in potential energy does the package get? O 1504733.118 Ib-ft 1937.104 BTU O 2040.48 kJ O 2.04 kJA fuel-efficient car is able to convert the chemical potential energy of gasoline into translational kinetic energy at an efficiency of 78.4%. If there is 8742 kJ of chemical potential energy in one tank of gas, what is the amount of translational kinetic energy produced. How to manipulate formula eff=output/input x 100