On average, how much energy do humans radiate each second?

Q: I'm trying to solve this question, The record time for a Tour de France cyclist to ascend the…

A: The efficiency of the human body of work is 25%. Write the expression for the energy to ascend the…

Q: The Kingda Ka roller coaster at Six Flags Great Adventure and Safari in New Jersey currently holds…

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Q: Please help! Thank you! A 68.4-kg sky diver jumped out of an airplane at an altitude of 0.900 km.…

A: Given Data : The mass of the skydiver is given as m = 68.4 Kg. The height of the skydiver initially…

Q: How much energy is needed to change the speed of a 1200 kg of a car from 15.0 m/s to 30.0 m/s?

A: Work energy theorem We know from the conservation of energy law that energy can neither be created…

Q: A roller coaster features a near vertical drop of 150 meters. If the initial velocity was zero, the…

A:

Q: A bucket full of sand has a mass of 20 kg (including the bucket and the sand). The bucket is to be…

A:

Q: How many kilometres per litter will a car obtain if its engine is 25 percent efficient and it…

A: The number of kilometers is,

Q: A bucket holding 17kg of sand is being lifted by a weightless rope. The bucket leaks 0.5kg of sand…

A:

Q: give a specific example of a process that has the energy changes and transfers described. (For…

A: in  given process , internal energy is constant or change in internal energy is zero, but work or…

Q: Similar to the previous problem, we heat about a cup (238 g) of milk (we’ll treat it like water,…

A: By condition,

Q: A bucket with mass 2 kg begins holding a mass of 30 kg of sand. The bucket is to be lifted to the…

A: Given values -  Weight of rope is negligible hence -

Q: A kid on a bike coasts (No Pedaling) from the bottom to the top of a 25 m hill. What is the energy…

A: Given: The kid goes from bottom to top. The height of the hill is 25 m.

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

A:

Q: Give an explanation of how food energy (calories) can be viewed as molecular potential energy…

A: Given: Food energy can be viewed as molecular potential energy is discussed below.

Q: For saving energy, bicycling and walking are far more efficient means of transportation than is…

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: A weightlifter curls a 28 kg bar, raising it each time a distance of 0.55 m.  How many times must…

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Q: 1 cubic meter of a perfect gas at constant pressure of 1 bar and temperature of 17°C are compressed…

A: The ideal gas equation is given as, PV=nRTPVT=nR

Q: Samantha wishes to maintain her weight and goes to the gym to work off the calories she consumed at…

A:

Q: In the figure, a 4.5 g ice flake is released from the edge of a hemispherical bowl whose radius r is…

A: Given,  radius of bowl= 24 cm or 0.24 m Mass of flake= 4.5 gram mass of flake in second case= 4.5*6=…

Q: A lump of plasticine weighing 200 g is thrown at an angle of 30° and at a speed of 16 m/s towards…

A:

Q: A family uses 8 kW of power, (a) Direct solar energy is incident on the horizontal surface at an…

A: A family uses 8 kW of power Direct solar energy is incident on the horizontal surface at an average…

Q: In terms of saving energy, bicycling and walking are far more efficient means of transportation than…

A:

Q: In terms of saving energy, bicycling and walking are far more efficient means of transportation than…

A:

Q: The kinetic and potential energy of an object as it moves along the x axis is represented by the…

A: Given:  Energy vs distance graph is given:  From x = 0 m to x = 100 m, Work done on the object = 3…

Q: After the lockdown due to Covid-19, Ezekiel a 10year-old kid of mass 40kg starts to have an outdoor…

A:

Q: Q23.) A boy of mass 50 kg runs up a staircase of 45 steps in 9 s. If the height of each step is 15…

A: Given: m=50kg g=10m/s2 t=9s h=45*15 =675cm =6.75m

Q: In April of 1976, Chicago Cub slugger Dave Kingman hit a home run which cleared the Wrigley Field…

A: Write the work-energy equation.…

Q: Consider four identical cars. Two of them collide head-on when both are traveling at 34 m/s . The…

A: v1=34m/s v2=27m/s We need to find The ratio of the amount of kinetic energy converted to internal…

Q: A young girl had been eating too much chocolate. How much work must she do to offset the 300…

A: Law of conservation of energy: According to this law " the energy cannot be created or destroyed it…

Q: To dramatize the loss of energy in an automobile when it stops, consider a car having a weight of…

A:

Q: How much energy does a 7kg box have if it is at a height of 5m? O 233 J O 123 J O 343 J O 453 J

A: Given Data: The mass of box is m = 7 kg. The height of box is h = 5 m. When a body is placed above…

Q: Problem 12:  When water flows through river rapids or over a waterfall, it experiences a decrease in…

A: Height of waterfall (h) = 41 m  Specific heat of water (c) = 4.19 × 103 J / kg ° C

Q: he metabolic power for typing is 150 W for Lili, not a lot as you know probably. How long does it…

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Q: Your friend lifts a 45 kg barbell from the ground to a height of 2.4 m. Your friend claims doing…

A: Given data The mass of the barbell is given as m = 45 kg. The height up to which the barbell is…

Q: By eating a ripe banana, 110 calories of energy can be taken. Solve the minimum number of bananas to…

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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: A 73-kg boy is surfing and catches a wave which gives him an initial speed of 1.6 m/s. He then drops…

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Q: * Two narrow slits are used to produce a double-slit interfer- ence pattern 0.90 mm, and the…

A: Answer             6.136 * 10-7 m

Q: the

A: Given:- Source energy in philippines.

Q: In the figure, a 3.0 g ice flake is released from the edge of a hemispherical bowl whose radius ris…

A:

Q: True or False: The energy in the food you eat was created when it was grown.

A:

Q: Shouldn't delta T be a negative value since Tf - Ti  = 50C - 110C = - 60C, so the work done would be…

A: yes indeed! work will be negative.so change in temperature is negative and temperature is negative.