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Kamila [148]
3 years ago
8

describes how the color and texture of a surface affect absorption and reflection of solar radiation?

Physics
1 answer:
Wewaii [24]3 years ago
3 0

Most of the radiation, however, is absorbed by the earth's surface. ... Every surface on earth absorbs and reflects energy at varying degrees, based on its color and texture. Dark-colored objects absorb more visible radiation; light-colored objects reflect more visible radiation.

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What is made of one type of atom​
umka21 [38]

Any sample of an <em>ELEMENT</em> is made of only one type of atom.

Here are some elements:

-- Hydrogen, Helium, Neon

-- Carbon (lead in a pencil, also diamonds)

-- Oxygen, Nitrogen, Argon (All mixed together in air, but not hooked up with other atoms)  

Other elements you may have heard of:  

-- Silver, Gold, Copper, Iron, Lead, Aluminum, Silicon, Chlorine, Calcium, Titanium, Nickel, Tin, Platinum, Mercury, Radium, Uranium

8 0
3 years ago
A train travels 600km in 4 hours. What is the speed of the train?
Bad White [126]

Answer: 150 miles per hour

Explanation:

600/4 just do 600÷4 on a calculator and you will get 150 miles.

6 0
3 years ago
What is physics and is it related to chemistry? ​
Dominik [7]

Physics also deals with the basic principles that explain matter and energy, and may study aspects of atomic matter by following concepts derived from the most fundamental principles. Chemistry focuses on how substances interact with each other and with energy (for example heat and light).

4 0
3 years ago
a 2500 kg car going 35 m/a hits a 4000kg truck that is sitting still. What is the velocity of the truck if the car transfers all
lianna [129]

Answer:

Velocity of truck is 21.875 m/s.

Explanation:

Given:

Mass of the car (m) = 2500 kg

Initial speed of the car (u) = 35 m/s

Mass of the truck (M) = 4000 kg

Initial speed of the truck (U) = 0 m/s (Rest)

As per question, the total momentum of the car gets transferred to the truck.

Therefore, the final momentum of the car is 0.

Momentum is given as the product of mass and velocity.

So, if momentum becomes zero means the velocity becomes 0.

Therefore, final velocity of the car (v) = 0 m/s

Let the final velocity of truck be 'V' m/s.

Now, during collision, the total momentum remains conserved.

Initial momentum  = Final momentum.

Initial momentum of car + Initial momentum of truck = Final momentum of car + Final momentum of truck.

⇒ mu+MU=mv+MV\\\\2500\times 35+4000\times 0=2500\times 0+4000\times V\\\\87500+0=0+4000V\\\\4000V=87500\\\\V=\frac{87500}{4000}\\\\V=21.875\ m/s

Therefore, the velocity of the truck is 21.875 m/s.

7 0
3 years ago
A baseball is thrown directly upward from ground level with a velocity of +15 m/s. What are the two times when the ball is 10 m
erastovalidia [21]

Answer:

time is 0.5660 s

and time is - 3.62431  s

Explanation:

velocity u = 15 m/s

height s = 10 m

acceleration due to gravity g =  –9.8 m/s²

to find out

time

solution

we will apply here distance equation that is

s = ut - 1/2× gt²   ...........1

here put all these value and get time t

here s is height and g is -9.8

so

s = ut - 1/2× gt²

10 = 15t - 1/2× (-9.8)t²

10 = 15t + 4.9t²

solve it we get t

t = 0.56630 and -3.62431

so time is 0.5660 s

and time is - 3.62431  s

8 0
3 years ago
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