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Alekssandra [29.7K]
4 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]4 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 plank of length L=2.200 m and mass M=4.00 kg is suspended horizontally by a thin cable at one end and to a pivot on a wall at
Elenna [48]

The tension in the cable is 23.2 N

<h3>What is the tension in the string?</h3>

The tension in the cable can be resolved into horizontal and vertical forces Tcosθ and Tsinθ respectively.

Tcosθ, is acting perpendicularly, Tcosθ = 0

Taking moments about the pivot:

Tsinθ * 2.2 = 4 * 9.8 * 0.7

Solving for θ;

θ = tan⁻¹(1.4/2.2) = 32.5°

T = 27.44/(sin 32.5 * 2.2)

T = 23.2 N

In conclusion, the tension in the cable is determined by taking moments about the pivot.

Learn more about moments of forces at: brainly.com/question/23826701

#SPJ1

3 0
2 years ago
For life to flourish on Earth, several changes occurred that affected the atmosphere, such as _____.
e-lub [12.9K]
Evolution of cyanobacteria that produce O2volcanic outgassing to create a thicker atmosphereformation of an ozone layer to block harmful radiationall of the above<span>only a and c

Are the options</span>
8 0
3 years ago
1) Halving the distance (i.s., decreasing by a factor of two) between two charged objects will cause the electrical force betwee
Vedmedyk [2.9K]

Answer:

Explanation:

For an electric force, F the formula:

F = kQq/r^2

Given:

r2 = 1/2 × r1

F1 × r1 = k

F1 × r1 = F2 × r2

F2 = (F1 × r1^2)/(0.5 × r1)^2

= (F1 × r1^2)/0.25r1^2

= 4 × F1.

7 0
4 years ago
A ship maneuvers to within 2500 m of an island's 1800 m high mountain peak and fires a projectile at an enemy ship 610 m on the
Ne4ueva [31]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

t=(0-(250sin75)^2)/-9.8 
<span>the distance one is (2500+610)- (250m/s*cos75)*t=Dh Dh=horizontal distance </span>

<span>the max height one is d=0.5*9.8*t^2 </span>
<span>d= max height subtract 1800-d</span>
3 0
3 years ago
Read 2 more answers
A sailfish swims 120 km/hr. How far will it travel in 8.0 minutes?
Rasek [7]

Answer:

16km

Explanation:

First change the minutes into hours then multiply by the distance.

(8÷60)×120=16km

5 0
4 years ago
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