too much sun is dangerous for humans and can cause cancer so it's important that light is reflected for example a pool reflects water back to space that is why water sometimes is cold because it reflects light
Answer:
4.17 m/s
Explanation:
To solve this problem, let's start by analyzing the vertical motion of the pea.
The initial vertical velocity of the pea is

Now we can solve the problem by applying the suvat equation:

where
is the vertical velocity when the pea hits the ceiling
is the acceleration of gravity
s = 1.90 is the distance from the ceiling
Solving for
,

Instead, the horizontal velocity remains constant during the whole motion, and it is given by

Therefore, the speed of the pea when it hits the ceiling is

I assume the x-y axis are tilted such that the x-axis is parallel to the surface of the hill while the y-axis is perpendicular to it.
In this case, the x-component of the weight is given by:

where
m is the mass of the car
g is the acceleration of gravity

is the angle of the hill
Substituting numbers into the formula, we find
Answer:
20 cm
Explanation:
We can solve the problem by using the magnification equation:

where
is the size of the image
is the height of the real object (the man)
is the distance of the image from the lens
is the distance of the object (the man) from the lens
Solving the formula for
, we find

And the negative sign means the image is inverted.
Answer:

Explanation:
Apply Faraday's Newmann Lenz law to determine the induced emf in the loop:

where:
variation of the magnetic flux
is the variation of time
#The magnetic flux through the coil is expressed as:

Where:
N- number of circular loops
A-is the Area of each loop(
)
B-is the magnetic strength of the field.
- is the angle between the direction of the magnetic field and the normal to the area of the coil.

=0.0250T/s is given as rate at which the magnetic field increases.
#Substitute in the emf equation:

Hence, the induced emf is 