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4 years ago

What is conduction

Physics

2 answers:

Hoochie [10]4 years ago

8 0

Answer:

Conduction is the process, by which heat is directly transmitted through a substance.

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emmainna [20.7K]4 years ago

3 0

Answer:

the process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material.

Explanation:

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What is the cause of the falling surface temperatures of the Pacific Ocean?

WINSTONCH [101]

Answer:

The primary cause of rising SST levels worldwide is climate warming due to excessive amounts of greenhouse gases being released into the atmosphere. Heat from the warming atmosphere raises the temperature of the sea surface. ... Water expands as it warms and the increased volume causes sea level rise.

Explanation:

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3 years ago

A 0.017-kg acorn falls from a position in an oak tree that is 18.5 meters above the ground.

Genrish500 [490]

Answer:

Velocity= 19.05 m/s

Kinetic energy= 3.08 J

Explanation:

The corn possess potential energy. Feom law of conservation of energy, all the potential eneegy will be converted to kinetic energy, with negligible friction.

Potential energy, PE= kinetic energy, KE

Potential energy is given by mgh while kinetic energy is given by $0.5mv^{2}$

Equating

$mgh=0.5mv^{2}$

Making v the subject of the formula then

$v=\sqrt {2gh}$

Substituting 9.81 m/s2 for g and 18.5 m for h then the velocity will be

$v=\sqrt {2\times 9.81\times 18.5}=19.0517715711689\ m/s\\v\approx 19.05\ m/s$

To get the kinetic eneegy, since PE=KE AND KE is

$KE=0.5mv^{2}$

Substituting v with 19.05 and m with 0.017 kg we have

$0.5\times 0.017\times 19.05^{2}=3.08467125/ J\approx 3.08 J$

This can also be achieved by mgh since PE=KE hence 0.17*9.81*18.5=3.085245 J and the results are slightly different due to small energy losses and rounding off of values.

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3 years ago

thin films of soap sometime display an array of colours. this display is the result of: a) reflection, diffraction, and interfer

kumpel [21]

The array of colors observed when viewing films of soap are caused by the interference, and from the reflections of light from two nearby surfaces (outer surface and inner surface). Among the choices, the closest answer would be B. reflection, refraction, and interference.

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4 years ago

Read 2 more answers

17. How long will it take for an object accelerating at a constant rate of 5 m/s to change its velocity from 0 to 6 m/s? (A) 0.6

VikaD [51]

Answer:

(B)

Explanation:

Time = change of velocity ÷ acceleration

= (6-0) ÷ 5

= 1.2

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