Name two machines that have made life more accessible in the past 200 years. What could be considered disadvantages of using these machines?

Q: James with a mass of 78 kg runs up the stairs that is14 m above the ground level. He produces 1,884…

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Q: A loader lifts a 20kg load to a height of 3m in 5 seconds. How much power was demonstrated

A: Given data:  Mass (m) = 20 kg Height (h) = 3 m Time (t) = 5 s Required: Power (P)

Q: A form of energy that permits human eye to see.

A: The only one form of energy exists which permits human eye to see is light energy.

Q: A 3 kg book has a weight of 29.4 N, and it takes that amount of force to lift it. Compare the amount…

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Q: 49. Along with energy obtained from fossil fuels, nuclear sources, and water, environmentalists are…

A: (C) option is correct.

Q: What do you understand

A: Given;  What do we understand if the machine is 85% efficient. Derive the statement ?

Q: What is the kinetic energy of a car that is traveling at 18.6 m/s if it has a mass of 1,240 kg?…

A: Given Mass of car m = 1240 kg speed of car v = 18.6 m/s

Q: Electric utility companies generally say that a community with 65,000 homes needs to be served by a…

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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: Kinetic Energy: (a) What is the kinetic energy of a 23 kg dog that is running at a speed of 8 m/s?

A: Given: mass,m= 23 kg  velocity,v = 8 m/s

Q: 1) A power plant's marginal fuel cost is the rate of shift in fuel cost relative to produced power.…

A: please see the next step for solution

Q: One of the wells is five metres deep A frog fell into the well The frog climbs three meters in the…

A: Given : Depth of well = 5 m d1 = 3 m d2 = -2 m (Negative because frog drops 2 m at night)

Q: A 181-kilogram object was pushed from rest to a speed of v meters per second, doing 22836.5 joules…

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

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: A Honda Civic does 778,825 Joules of work to accelerate from 0 to 60 mph in 5.8 seconds.  How much…

A: Given data: The work done is W=778825 J The time is t=5.8 s

Q: What is known as grand free energy ?

A: The grand potential is a quantity used in statistical mechanics, especially for irreversible…

Q: In 250 words, discuss how technological advancements and social media have changed the way…

A: Even if you aren’t an avid social media user, you should consider having a social media profile or…

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: 20. An example of cogeneration is: ✓ (a) operating a nuclear generating plant located beside a…

A: Cogeneration It is methods of utilization of remaining heat in thermal power plant after water…

Q: Suppose a theme park roller coaster has a train with six carriages. Each carriage takes eight…

A: The number of time roller coaster loads is N=60min-3min60smin30s=114times

Q: What is sustainable energy?

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Q: How much work does a 5000 Watt clothes dryer do when you run it for 30 minutes? 30 minutes = 1,800…

A:

Q: A microwave oven has a power requirement of 1,243 W. A frozen dinner requires 6.5 min to heat on…

A:

Q: o explain Why, climbing a set of stairs either by walking up or by running up requires approximately…

A: Metabolic energy is the energy used by the body in a particular activity. It depends on size of the…

Q: demonstrates a direct energy transfer? demonstrates a direct energy transfer? When the traffic…

A:

Q: What is the kinetic energy of a car that is traveling at 17.3 m/s if it has a mass of 1,345 kg?…

A: Speed of car (v) = 17.3 msMass of car (m) = 1345 kg

Q: The average electrical consumption of an American residence 1500 kilowatt hours for a single family…

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Q: Why machines are never 100% sufficient

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Q: Solar Impulse 2 is a Swiss long-range experimental solar-powered aircraft project. What are the key…

A: Solar Impulse is the name of the project's two operating aircraft, as well as a Swiss long-range…

Q: Which of the following is the energy of motion? Select all apply. (Hint: Figure 10.1) Work 00…

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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: In recent years, there has been a large push for an increase in the use of renewable resources to…

A: i) The mileage of the car, which use gasoline as fuel, is 27.5 mi/gal. ie., using 1 gallon of…

Q: A dime has mass 2.268 grams. Calculate the number of years the rest energy of a dime could be used…

A: A dime, Mass of dime, m = 2.268 g = 2.268 X 10-3 kg Power of bulb, P = 75 W We have to find for how…

Q: a hydraulic catapult propels the car to the top of the ride, at a height of 450 ft. If the car and…

A:

Q: 4) You are planning to design a rocket to go to mars. You have access to two types of fuel with the…

A: As comparison with fuel A and B, the denser fuel A gives more energy as comparison with B. Like if…

Q: If the average household in a region consumes about 5,250 kWh of energy per year. In the region, the…

A: Given Avg energy consumption in an year =  5,250 kWh  Avg annual solar energy potential  per year…