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valkas [14]
1 year ago
7

How will sunlight most likely affect a black shirt on a hot summer day? the temperature of the shirt will depend on how much sun

light is diffracted around the shirt. the temperature of the shirt will not change because the sunlight is transmitted through the shirt to the body. the temperature of the shirt will decrease because most of the light is reflected off of the shirt. the temperature of the shirt will increase because all wavelengths of light are absorbed by the shirt.
Physics
1 answer:
vladimir2022 [97]1 year ago
5 0

The correct answer is option (C) the temperature of the shirt will increase because all wavelengths of light are absorbed by the shirt.

The relationship of heat and light

  • Heat is a measure of the movement of particles in the body, the more particles move, the warmer the body becomes.
  • When the body absorbs light radiation, its particles vibrate in accordance with the electromagnetic radiation's wavelengths, which causes an increase in the temperature with the increase in particle movement.
  • The more wavelengths of radiation absorbed by an object, produces more heat.

Learn more about the Wavelength of light with the help of the given link:

brainly.com/question/13961990

#SPJ4

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3 0
3 years ago
A 75-hp (shaft output) motor that has an efficiency of 91% is worn out and is replaced by a high efficiency 75-hp motor that has
ZanzabumX [31]

Answer:

The heat gain of the room due to higher efficiency is 2.84 kW.

Explanation:

Given that,

Output power of shaft = 75 hp

Efficiency = 91%

High efficiency = 95.4%

We need to calculate the electric input given to motor

Using formula of efficiency

\eta=\dfrac{Work\ Output}{Work\ input}

Work\ Input =\dfrac{Work\ output}{\eta}

Work\ Input =\dfrac{75\times746}{0.91}

Work\ Input =61483.51\ W

Work\ Input = 61.48 kW

We need to calculate the electric input

For, heigh efficiency

Work\ Input_{inc} =\dfrac{75\times746}{0.954}

Work\ Input_{int} =58647.7\ W

Work\ Input_{int} = 58.64\ kW

The reduction of the heat gain of the room due to higher efficiency is

Q=Work\ Input-Work\ Input_{int}

Put the value into the formula

Q=61.48 -58.64

Q=2.84\ kW

Hence, The heat gain of the room due to higher efficiency is 2.84 kW.

3 0
3 years ago
How fast would a(n) 75 kg man need to run in order to have the same kinetic energy as an 8.0 g bullet fired at 390 m/s
nata0808 [166]

Answer:

Explanation:

½(75)v² = ½(0.008)390²

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6 0
3 years ago
Difference between force and weight​
Ainat [17]

Answer:

A force is any interaction that causes a mass to change its velocity (accelerate).

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4 0
3 years ago
Read 2 more answers
Please help with questions 32-35, especially 34
DENIUS [597]
32. P = V * I

P = 230 * 4 = 920 w

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33. I = P/V

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In short, Your Answer would be: 4 Ampere

34. Now, for this part you've given Voltage & Power, and you need to calculate Current & Resistance, so you could apply two equations here:

(i) For finding Current  = P/V
(ii) For resistance = V²/P

So, Current for Bulb of Study Lamp = 60/230 = 0.260 A
Resistance of Bulb of Study Lamp = 230²/60 = 881.67 Ohm

In similar manner, substitute the known values (Power & Voltage) in each case, you'll have your answers!

35. We know, P = V²/R
P = 230²/48
P = 1102.08 w

Hope this helps!
4 0
3 years ago
Read 2 more answers
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