The United States Patent and Trademark Office rejects claims for perpetual motion machines (in which energy output is as great or greater than energy input) without even investigating them. Why is this?

Q: The hike to the peak of Mount Hallasan on Jeju Island requires a climb of 1950 m of vertical…

A: Height of the elevation Mass of the person Efficiency

Q: I have 72 lightbulbs in my house. 53 of these lightbulbs are 65 watt and the other 19 lightbulbs are…

A: Determine the energy used in 1 year by 53 bulbs of 65 watts as follows.

Q: Mark and Sam bought a brand new blender to make their favorite slush this summer season. This 2.75…

A: Mark and Sam bought a brand new blender to make their favorite slush this summer season. This 2.75…

Q: In a given location, would a helicopter require more energy in summer or winter to achieve a…

A: Helicopter requires more energy in summer to create the same lift . In summer since temperature is…

Q: A hot water heater in a residential home runs for an average of 3.3 hours per day with a heat energy…

A: To calculate the annual cost of hot water for the given electric hot water heater, we need to…

Q: The average electricity consumption of a house in Gainesville is known to be 924 kWh in a month (One…

A: Introduction: 1) kWh is the unit of energy and is defined as consumption of one kilowatt power in…

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: What is the work done by a 16-watt electric fan in 30 minutes? O 28 kJ 31 kJ O 17 kJ 18 kJ

A:

Q: Suppose that the average U.S. household uses 14600 kWh14600 kWh (kilowatt‑hours) of energy in a…

A: Given: mass of car mc = 1470kg            height lifted hc =11.3m            energy E = 14600 KWh…

Q: According to the World Energy Council, the average household in Mexico consumes about 1600 kWh of…

A: Dimension of solar panels=(1×1)  So area of solar panel=1 m^2 Annual solar energy potential of panel…

Q: Assuming that the diet of an average Canadian consists of 2,000 food calories per day (1 food…

A: Given data :- diet of an average person Canadian = 2,000 food calories per day 1 food cal = 4200 J…

Q: A student evaluates a weight loss program by calculating the number of times she would need to climb…

A:

Q: In a sunny location, sunlight has a power density of about 1 kW/m2 . Photovoltaic solar cells can…

A: The input power given to a solar cell is given by the equation,…

Q: An underground salt cavern has approximate dimensions of 100m x 500m x 3m. The underground salt…

A:

Q: Suppose a woman eats a 340 kcal cup of yogurt. How many minutes will the energy in the cup of yogurt…

A: The equation for the available energy or the output energy.

Q: An object with a large surface area has a mass of 20kg, and falls freely under gravity from a height…

A: Given: The mass of the object is 20 kg. The initial height of the object from the ground is 25 m.…

Q: A weight lifter bench‑presses a 150.0 kg barbell from his chest to a height equal the length of his…

A: Solution:   Given Values, Mass of barbell (m)=150 KgHeight (h)=0.850 m

Q: The metabolic power for walking is 316 W for Lili. For how long would Lili have to walk to use all…

A: Given Data, Metabolic Power required for walking (P)=316 W Energy Content in a can of soda (E)=628…

Q: certain location , the solar power per unit area reaching Earth’s surface is 200 W/m square ,…

A: GivenSolar power per unit area reaching Earth’s surfaceP=200 W/m2Average power requirement in your…

Q: When a person intakes 3000 kcal of food, he is able to do work requiring energy of 2500 kcal. This…

A: True and False: When a person intakes 3000 kcal of food, he is able to do work requiring energy of…

Q: In a decentralized energy generation system, analyze how solar thermal energy can contribute to…

A: Solar energy is the energy obtained from Sun. This energy is converted to electrical and heat energy…

Q: A PHYS 1510 student was working on a robotics project. The joints on the machine they were building…

A:

Q: a) How many Joules of energy are needed to keep a 225 Watt ceiling fan (with lights) working for 1…

A: (a) Watt is defined as  1 watt = 1 joule per second and Energy = power x time.  (b) & (c) Unit…

Q: You use a quantity of fuel with a total energy content of 19.02 MJ to power an engine. If the…

A: The objective of the question is to calculate the efficiency of an engine given the total energy…

Q: 12.. Buying electricity Here is an extract from our electricity bill, The coloured text has been…

A:

Q: the

A: Given:- Source energy in philippines.

Q: You are renting a car to take a road trip from Ottawa to Halifax, about 1400 km. The car rental…

A:

Q: How many tons of coal are needed per day to run a 1000 Mega Watt power plant? One Watt is 1 Joule /…

A:

Q: nth of November'2020 =

A:

Q: 93 91 2nC 2nC 2nC 0. Sm O.Sm caleulate the energy of the system.

A: The electric potential energy U due to a system of three charges q1, q2, and q3 is given by, U =…

Q: (a) How much work is done when you push a crate horizontally with 150 N across a 20 m school floor?…

A:

Q: Rub your hands together vigorously. What happens? Discuss the energy transfers and transformations…

A: Hands are felt warm when rubbed. When we rub the hands,hands are having kinetic energy .It is the…

Q: The metabolic power for typing is 150 W for bob. For how long would bob have to type to use all the…

A: Power = Energy / time Time = Energy / power Energy = 5660 kJ = 5660000 J Power = 150 W Time =…

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…

Q: An electric heater of power 3 kW is used for 10 h. How much energy does it consume? Express your…

A: