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Nataly_w [17]
1 year ago
13

How changes in solar position influence the intensity of radiation on a horizontal surface?

Physics
1 answer:
Alex_Xolod [135]1 year ago
8 0

Changes in solar position influence the intensity of radiation on a horizontal surface because Energy concentration is greatly affected by changes in solar position. Energy intensity is greater when solar position is high. This concentrates more energy per unit area.

What determines the intensity of solar radiation?

The angle of the sun determines solar irradiance. The greater the angle, the lower the solar intensity. The lower the angle of the sun, the larger amount of ozone the light has to pass through.

What affects the intensity of solar energy?

The main parameters affecting the intensity of solar radiation are the zenith angle zeta of the sun, the water vapor content w of the atmosphere, and Schupp's turbidity coefficient B.

To learn more about solar radiation here

brainly.com/question/16525532

#SPJ4

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) A 1000-kg car is moving at 30 m/s around a horizontal unbanked curve whose diameter is 0.20 km. What is the magnitude of the f
Yuri [45]

The frictional force required is 9000 N

Explanation:

In order to keep the car in the turn in circular motion without sliding, the frictional force must provide the centripetal force necessary for the circular motion.

Therefore, we can write:

F_f = m \frac{v^2}{r}

where the term on the left is the frictional force while the term on the right is the centripetal force, and where:

m is the mass of the car

v is its speed

r is the radius of the curve

For the car in this turn, we have

m = 1000 kg

v = 30 m/s

r=\frac{0.20 km}{2}=0.10 km = 100 m (since the diameter is 0.20 km, the radius is half that value)

And substituting, we find

F_f = (1000) \frac{30^2}{100}=9000 N

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8 0
3 years ago
one type of wave used to transmit a signal is a ultraviolet wave. infrared wave. radio wave. x-ray wave.
sammy [17]
Please be more specific because they all transmit signals but the most common one is the radio wave because it transmits cellphone , televition and radio signals
6 0
3 years ago
Read 2 more answers
Biologists use optical tweezers to manipulate micron-sized objects using a beam of light. In this technique, a laser beam is foc
vekshin1

Answer:

Explanation:

Part A) Using

light intensity I= P/A

A= Area= π (Radius)^2= π((0.67*10^-6m)/(2))^2= 1.12*10^-13 m^2

Radius= Diameter/2

P= power= 10*10^-3=0.01 W

light intensity I= 0.01/(1.12*10^-13)= 9*10^10 W/m^2

Part B)  Using

I=c*ε*E^2/2

rearrange to solve for E= \sqrt{((I*2)/(c*ε))

c is the speed of light which is 3*10^8 m/s^2

ε=permittivity of free space or dielectric constant= 8.85* 10^-12 F⋅m−1

I= the already solved light intensity= 8.85*10^10 W/m^2

amplitude of the electric field E= \sqrt{(9*10^10 W/m^2)*(2) / (3*10^8 m/s^2)*(8.85* 10^-12 F⋅m−1)

---> E= \sqrt{(1.8*10^11) / (2.66*10^-3) = \sqrt{(6.8*10^13) = 8.25*10^6 V/m    

 

8 0
3 years ago
You walk with a velocity of 2 m/s north. You see a man approaching you, and from your frame of
solong [7]

Answer:

The velocity of the man from the frame of  reference of a stationary observer is, V₂ = 5 m/s

Explanation:

Given,

Your velocity, V₁ = 2 m/

The velocity of the person, V₂ =?

The velocity of the person relative to you, V₂₁ = 3 m/s

According to the relative velocity of two

                                V₂₁ = V₂ -V₁

∴                               V₂ =  V₂₁ + V₁

On substitution

                                 V₂ = 3 + 2

                                      = 5 m/s

Hence, the velocity of the man from the frame of reference of a stationary observe is, V₂ = 5 m/s

8 0
3 years ago
2.Cars were previously manufactured to be as sturdy as possible, whereas today's cars
Marina CMI [18]

Answer:

Crumple zones are designed to absorb and redistribute the force of a collision. ... Also known as a crush zone, crumple zones are areas of a vehicle that are designed to deform and crumple in a collision. This absorbs some of the energy of the impact, preventing it from being transmitted to the occupants.

4 0
2 years ago
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