What is the mechanical efficiency of an individual doing 110 KJ with a total energy expenditure of 226 Kcal? around 7.7% around 31.4% around 7.1% around 30%

Q: Dicuss the Energy Return on Energy Invested for wind, solar, hydro, coal, oil and gas.

A: Harnessing of wind energy is non-conventional and a green source of energy which once installed at…

Q: small child can move a large, heavy wheel. a)Because every action has a reaction. b)Because the…

A: A child can easily move a heavy wheel as his action results in changing the state of motion of rest…

Q: Energy.gov stated by the end of 2013, the United States’ wind power capacity provided enough…

A: Capacity of electricity generated by wind power = 16 million homes  Capacity of electricity used =…

Q: energy Comsemed in Jou Lx toostro of minertis 2 30

A: Solution:Consider the equation for power given as:Power = EnergyTimeApplying values in above…

Q: Trial h2 (m) | (m) (m) Ah GPE KE %diff (kg) (m) (s) (m/s) Vf (J) (J) 0.5 0.05 0.47 0.39 0.08 0.040…

A: Kinetic energy (K.E) of the object is related with its velocity and is given by…

Q: how many particles are there in a glass of water? defend or explain

A:

Q: 19. k(0.050 m) – (0.15)(0.12 kg)(9.8 m/s²) = (0.12 kg)(0.65 m/s²)

A: 19. The given equation can be solved as given below,

Q: Pls help with below homeowrk-) To save electricity which are the five energy-saving design features…

A: Below are top 5 techniques that will help to generate green buildings

Q: For the system in a chagram below, defermme the reactions R and F if the system Is equilibrium. IS…

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Q: 30 Which cube will move to the right? F Cube A G Cube B H Cube C J Cube D

A: In this question we have to answer which of the given cube move towards right.

Q: How many Ergs are there in 1 Joule? a) 10 b) 104 c) 107 d) 109

A: To find: How many Ergs are there in 1 Joule

Q: college student produces about 107 kcal if he per hour on the average. What is the rate of energy…

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Q: I said number 6 for a reason, I didn't just put a random #6 now I have to use another question and…

A: Have a look dear

Q: When you are riding a bicycle going forward, what is the direction of the angular momentum of the…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Enter the number of electrons in each energy level (shell) for each of the elements. If the energy…

A: The Helium (He) atom has atomic number 2 and therefore it has 2 electrons.

Q: 0 Pablemes 95kg Energy A Cal. PE, KE and velocity of the basl at points B and C 25m 13 12 m L 5m

A: mass (m) = 95 kg HA = 25 m HB = 5 m HC = 12 m Total mechanical energy = m×g×HA= 95×9.8×25= 23275 J

Q: What is the advantage of a wooden roller coaster over a steel?

A: Advantages of wooden roller coaster over steel

Q: Which of the following statements is true for the figure given below? * y F 450

A: Given:

Q: Show that 1kW-hr is the same as 3.6MJ

A: Concept: kW-hr is unit of energy. It is defined as amount of energy consumed from a power source ,…

Q: A certain hybrid vehicle has a fuel economy of 53mi/gal during city driving. What is this fuel…

A: Dear student The conversation of units is as follows: 1 miles = 1.609 km 1 gallon = 3.78541 L

Q: Doubling the mass of an object moving at velocity v means A) it will have half the KE B) it will…

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Q: How to calculate housepower

A: To calculate the house power we need to calculate the power for one load of the house Ri and the…

Q: It is easy to create and destroy energy. True False

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Q: Why machines are never 100% sufficient

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Q: How dependent on energy is our society? Why?

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Q: How diesel generators work?! And there benefits?!

A: working :-  First of all air is blown into the generator until it is compressed  .  And…

Q: True or false "Cars are less efficient in cold weather"

A: The efficiency of the cars is less in cold weather. This is because there is an increase in energy…

Q: Name two machines that have made life more accessible in the past 200 years. What could be…

A: Computer have made life more accessible in past 200 years,  the advantages of using a computer?…

Q: 03 Determ.no whether each oiod. in ure below is for word or revrse biased. las V lor 5V lok lovelt…

A: Biasing is a method used in circuit for making smooth and proper flow of current or voltage in a…

Q: How does your power output in climbing the stairs compare to the power output of a 100-watt light…

A: AnswerHere,let's assume a person has an average weight 75 lg of take 35 s for climbing 6…

Q: s 1 pound of coal to generate one kWh of electricity. How much coal would an average home use in a…

A: in India average use of electricity per day = 5.7 Kwh / day  1 pound of coal to generate one kWh of…