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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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If it takes 20n to move a box, how much power will be needed to move the box a diatance
solmaris [256]

The power applied to move the box anywhere is

   (20 n) x (distance moved) / (time to move the distance) .
 
3 0
3 years ago
If the sun had twice the mace how would that affect the gravitational force of the sun
daser333 [38]

Answer:  Gravity is the force that keeps planets in orbit around the Sun. Gravity alone holds us to Earth's surface.

Planets have measurable properties, such as size, mass, density, and composition. A planet's size and mass determines its gravitational pull.

A planet's mass and size determines how strong its gravitational pull is.

Models can help us experiment with the motions of objects in space, which are determined by the gravitational pull between them.

Explanation:

5 0
3 years ago
Jackson wants to fit into last year's Halloween costume, but he has been building muscle and has gained a few healthy pounds sin
katrin [286]
It would be A. Because think of the explanations Jasons friend could say to them that would be a negative 'statement'.
7 0
3 years ago
a projectile is launched at an angle of 30 degrees and lands later at the same level. if it's initial speed is 50 m/s, solve for
Mrrafil [7]
using \: the \: formula \\ t = \frac{2u \sin( \alpha ) }{g} where \: u = initial \: speed \: \\ \alpha = angle \: of \: projection \\ g = acceleration \: due \: to \: gravity \\ \frac{2 \times 50 \times \sin(30) }{10} \\ \frac{100 \times 0.5}{10} = \frac{50}{10} = 5seconds

Maximum height
= (Usinα)^2/2g
(50*0.5)^2/20
25^2/20
625/20
=31.25metres
horizontal distance = Range= [U^2 * sin2α]/g
[50^2 * sin60]/10
2500 * 0.8660/10
2165/10=216.5metres
3 0
3 years ago
For a top player, a tennis ball may leave the racket on the serve with a speed of 55 m/s (about 120 mi/h). If the ball has a mas
inn [45]

Answer:

Yes is large enough

Explanation:

We need to apply the second Newton's Law to find the solution.

We know that,

F= ma

And we know as well that

a= \frac{v}{t}

Replacing the aceleration value in the equation force we have,

F= \frac{mv}{t}

Substituting our values we have,

F= \frac{(0.060)(55)}{4*10^{-3}}

F=825N

The weight of the person is then,

W = mg

W = (60)(9.8) = 558N

<em>We can conclude that force on the ball is large to lift the ball</em>

6 0
3 years ago
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