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umka2103 [35]
3 years ago
14

Would a Black T shirt or a White T shirt be hotter on a summer day?

Physics
2 answers:
tamaranim1 [39]3 years ago
7 0

Answer:

a black T-shirt would be hotter

Explanation:

dark colors absorb heat. light colors reflect it.

Zepler [3.9K]3 years ago
7 0

Answer:

The black shirt would be hotter.

Explanation:

Most of us have already felt regret for leaving the house wearing black clothes on a hot day and with the sun showing. This has to do with the fact that black or very dark colored objects are absorbent, while light clothes and objects are reflective.

Going back to physics classes, we came to the idea that the color that we see in an object is related to the wavelengths of light reflected in that object, right?

Black objects, like the shirt you decided to wear, are black in color because they absorb all wavelengths in white light, but do not reflect any of them.

Then, throughout the day, you walk, run so as not to miss the bus, go out to lunch, and the shirt ends up absorbing all the light that comes from the Sun. As this light does not simply disappear, it is converted into other forms of energy - the heat enters there, which is then emitted. Therefore, the darker a garment, the more heat it will emit, and this is because it is a beautiful absorber of light.

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Water towers store water above the level of consumers for times of heavy use, eliminating the need for high-speed pumps. How hig
Salsk061 [2.6K]

Answer:

So height will be 47.387 m

Explanation:

We have given gauge pressure P=4.63\times 10^5N/m^2

Density of water \rho =997kg/m^3

Acceleration due to gravity g=9.8m/sec^2

We know that pressure is given as P=\rho gh

4.63\times 10^5=997\times 9.8\times h

h=47.387m

So height will be 47.387 m

4 0
3 years ago
A 50 g sample of an unknown metal is heated to 90.0C. It is placed in a perfectly insulated container along with 100 g of water
Scrat [10]

Answer:

0.64 J/g°C

Explanation:

Using the formula;

Q = m × c × ∆T

Where;

Q = amount of heat

m = mass (g)

c = specific heat capacity

∆T = change in temperature (°C)

In this case:

Q (water) = - Q (metal)

mc∆T (water) = - mc∆T (metal)

According to the information in this question,

For water; m = 100g, c = 4.18J/g°C, ∆T = (25°C - 20°C)

For metal; m = 50g, c =?, ∆T = (25°C - 90°C)

mc∆T (water) = - mc∆T (metal)

100 × 4.18 × (25°C - 20°C) = - {50 × c × (25°C - 90°C)}

100 × 4.18 × 5 = - {50 × c × -65}

2090 = -{-3250c}

2090 = 3250c

c = 2090/3250

c = 0.643

c = 0.64J/g°C

7 0
3 years ago
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In this image F1 is equal to 100 N and F2 is equal to 50 N. What is the net force?
ZanzabumX [31]

Answer:

net force would be 50 N right

Explanation:

6 0
2 years ago
A zebra starts from rest and accelerates at 1.9 m/s, how far has the zebra gone after 5 seconds
Aliun [14]

Answer:

23.8 m

Explanation:

The distance travelled by the zebra can be calculated by using the equation:

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where

u is the initial velocity

t is the time

a is the acceleration

For this zebra,

u = 0 since it starts from rest

a=1.9 m/s^2 is the acceleration

Substituting t = 5 s, we find the distance travelled by the zebra:

d=0+\frac{1}{2}(1.9)(5)^2=23.8 m

5 0
3 years ago
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