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Black_prince [1.1K]
3 years ago
9

1.When I cook an egg in a microwave oven, the device uses electromagnetic energy to increase the kinetic energy of particles of

matter in the egg.
2.Many stoves and ovens have exhaust fans overhead to remove the rising warm air from the kitchen. The thermal energy is added to air and it rises.

3.When I cook an egg in a pan, thermal energy is transferred as the egg touches the hot surface of the pan. The thermal energy is transferred as objects touch.



choose which one are Conduction, Convection or Radiation
Physics
1 answer:
kondaur [170]3 years ago
5 0

Answer:

1: Radiation 2: Convection 3: Conduction

Explanation:

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An 11.0 -W energy-efficient fluorescent lightbulb is designed to produce the same illumination as a conventional 40.0-W incandes
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The amount or cost that the user of the energy-efficient bulb save during 100h of use will be $0.319.

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For the 11.0W bulb, it should be noted that the value will be:

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6 0
2 years ago
A uniform rod of length L is pivoted at L/4 from one end. It is pulled to one side through a very small angle and allowed to osc
ludmilkaskok [199]

Answer:

T= 4.24sec

Explanation:

We are going to use the formula below to calculate.

T=2\pi \sqrt{\frac{L}{g} }

Where T is period

           L is length of rod

       g is acceleration due to gravity =     9.8m/s^{2}

From the problem, the rod is pivoted at 1/4L which means that three quarter of the rod was used for the oscillation. lets call this L_{O}

L_{O} = 3/4 * 5.95m

        = 4.4625m

thus   T=2\pi \sqrt{\frac{L_{O} }{g} }

          T=2\pi \sqrt{\frac{4.4625 }{9.8} }

          T= 4.24sec

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3 years ago
A skateboarder starting from rest accelerates down a ramp at 2 m/s for 2 s. What is the final speed of the skateboarder?
AlekseyPX

Answer: 4m/s

Explanation:

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