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Alekssandra [29.7K]
3 years ago
8

What is the primary mode of energy transfer from hot coffee inside a Thermos bottle to the environment? View Available Hint(s) P

art B What is the primary mode of energy transfer from your bare feet to a cold ceramic bathroom floor in the middle of winter? View Available Hint(s) Part C What is the primary mode of energy transfer from your body to your hands when you blow on them to warm them? Request Answer Part D What is the primary mode of energy transfer into your sealed car parked in the sun on a hot summer day? Request Answer Part E What is the primary mode of the flow of energy from your tongue to a metal railing if you happen to lick it on a cold winter day? Request Answer Part F What is the primary mode of energy transfer from a hair dryer to your wet hair? Request Answer Part G What is the primary mode of energy transfer from your body on a cold day with no wind? Request Answer Part H What is the primary mode of energy transfer away from your body on a very windy day?
Physics
1 answer:
Keith_Richards [23]3 years ago
8 0

Answer Part A: radiation

Part B: conduction

Part C: conduction

Part D: conduction

Part E: conduction

Part F: radiation

Part G::radiation

Part H : convection

Explanation:conduction is heat transfer through direct contact

Convection is through molecules or particles of water or air current

Radiation is heat transfer through empty space .

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A rectangular coil of dimensions 5.40cm x 8.50cm consists of25 turns of wire. The coil carries a current of 15.0 mA.
Kazeer [188]

Answer:

(a) Magnetic moment will be 17.212\times 10^{-4}A-m^2

(b) Torque will be 6.024\times 10^{-4}N-m

Explanation:

We have given dimension of the rectangular 5.4 cm × 8.5 cm

So area of the rectangular coil A=5.4\times 8.5=45.9cm^2=45.9\times 10^{-4}m^2

Current is given as i=15mA=15\times 10^{-3}A

Number of turns N = 25

(A) We know that magnetic moment is given by magnetic\ moment=NiA=25\times 45.9\times 10^{-4}\times 15\times 10^{-3}=17.212\times 10^{-4}A-m^2

(b) Magnetic field is given as B = 0.350 T

We know that torque is given by \tau =BINA=0.350\times 15\times 10^{-3}\times 25\times 45.9\times 10^{-4}=6.024\times 10^{-4}N-m

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2 years ago
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Explanation:

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4 0
3 years ago
Lab: Motion
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Answer: In this lab we wanted to know how motion can be described. So the hypothesis is if the starting height of a sloped racetrack is increased, then the speed at which a toy car travels along the track will increase because the toy car will have a greater acceleration. My prediction is that cars travel faster on higher tracts. So the heighten the track was intentionally manipulated. So it is the independent variable the speed of the car is the dependent variable. The speed at the first quarter checkpoint is 1.09 m/s. The speed at the second quarter checkpoint is 1.95 m/s. The speed at the third quarter checkpoint is 2.373.36 m/s. The speed at the finish line is  2.803.00 m/s. The average speed increases as the height increases.

The cars on the higher track travel farther than the cars on the lower track, in the same time.

This means that the cars on the higher track have a greater average speed than those on the lower track. This is demonstrated by the

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2 years ago
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3 years ago
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