Why is it a better to wear a white shirt on a hot summer day instead of a black shirt?

Answers

Answer 1
Answer: because when you wear a black shirt it absorbs more heat because it is a dark collor
Answer 2
Answer: Yes, it is better to wear a white shirt because black is a color that attracts sunlight, therefore, making you sweat more if you wore the black shirt. 

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What is the difference of a gemstone a rock and Crystal

Answers

A gem is a stones that is used to make jewelry. A crystal is apure substance that has molecules arranged in "a regular geometric pattern". A gem can also be a crystal, whereas a crystal can not be a gem.

Hope this helps. <3

Crystals are pure substances that have molecules arranged in a regular geometric pattern. A gem can be a crystal whereas a crystal will not always be a gem. Gems can have mineral bases such as ruby or diamond and an organic base such as amber.
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Hope I helped :)

to remove a tight-fitting jar, megan runs the lid under hot water. What happends to the jar lid when its temperature increases?

Answers

It expands due to heat and makes it easier to open the jar.

Final answer:

Running the lid of a tight-fitting jar under hot water causes it to expand due to thermal expansion, which makes it easier to remove from the jar.

Explanation:

When the lid of a tight-fitting jar is run under hot water, it undergoes thermal expansion due to the increase in temperature. The expansion of the lid causes it to slightly loosen, making it easier to remove from the jar. This happens because metals have higher coefficients of expansion than glass, so the lid expands more than the jar itself.

Learn more about Thermal expansion here:

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If an organism starts from only one cell,how do we get different body parts and organs

Answers


Every cell has chromosomes in its nucleus.  In a human cell,
there are 26 of them. AND ... lined up on every chromosome
are thousands and thousands of GENES.  Those carry the
instructions for what kind of organ or bone or tissue or hair
this cell will be used to build, how the structure will work, how
tall you will be, what color your eyes will be, how deep your
voice will be, and what illnesses you will have. 

Every cell has the complete set of instructions in it.  In the past
several years, we have just started to be able to read them, and
extraordinary progress has been made.  There's an awful long way
still left to go.    

Can Someone help me answer the question?

Answers


There must be a description of the ball and its environment,
somewhere earlier on the sheet where we can't see it.  We
don't know what the conditions and environment are around
the ball as it moves downward.  So I can only answer in the
most general way, and make up some scenarios.

If the ball is falling from an airplane, then it has to use some
of its energy to push air out of the way, and even then, it loses
some more energy as the air molecules scrape against its side. 
This is all called 'air resistance'.  It's a form of friction, the form that
takes energy away from anything that's moving through air.

If the ball is rolling across the lawn, then it takes some energy
to bend the blades of grass down along its path.  That's why a
ball that's rolling anywhere on Earth always stops, although
Newton's laws of motion say that an object in motion always
keeps moving and doesn't stop.

You are driving at 35 m/s east and notice another car that is initially located 462 m in front of you and is moving east at 25 m/s. How far do you travel before you pass the other car?

Answers

The easiest way to answer this question is by realizing there are relating the velocities of the two cars. To tackle this problem, you have to understand the picture.  Car 1 travels at 35m/s and Car 2 travels at 25m/s.  Based on relative velocities, we can understand that Car 1 travels 10m/s faster than Car 2 every second.  So we can interpret Car 1's relative velocity to Car 2 as 10m/s.  Car 1 needs to travel 10m/s till a point of catching up to Car 2 which is 462m away.

v = 10m/s

d = 462m

v = d/t

(10) = (462)/t

t = 46.2s

So it takes 46.2 seconds for Car 1 to catch up to Car 2, but the question is asking how far does Car 1 travel to catch up.  So we have to use Car 1's velocity and not the relative velocity:

v = 35m/s

v = d/t

(35) = d/(46.2)

d = 1617m

Car 1 traveled a total distance of 1617m.

-- You are 462 meters behind.

-- You're gaining on him at the rate of  (35m/s - 25m/s)= 10 m/s.

-- At that rate, it'll take you (462m / 10m/s)= 46.2 seconds to over take him.

-- During that time, you'll cover (46.2s x 35m/s)= 1,617 meters.

Are the light waves reflecting off a red stop sign longer or shorter than the waves reflecting off a Violet colored jacket

Answers

The light waves reflecting off a red stop sign longer than the waves reflecting off a Violet colored jacket.

The visible spectrum is composed of seven wavelengths. These wavelengths are red, orange, yellow, green, blue, indigo, violet. The wavelengths of these waves decrease in this order.

This means that the wavelength of red light is longer than the wavelength of violet light therefore  the light waves reflecting off a red stop sign longer than the waves reflecting off a Violet colored jacket.

Learn more: brainly.com/question/14281129

The light waves reflecting off a red stop sign(in road) are longer than those waves reflecting off a violet-colored jacket. Red has the longest waves.