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3 years ago

When do both hemispheres receive the same amount of the sun’s energy?

Physics

2 answers:

sveta [45]3 years ago

4 0

Answer: During the months of March and September

Explanation: Hemisphere is a combination of two words; hemi meaning half and sphere referring to the earth which is a spherical celestial body.

The Hemisphere of the Earth is divided into two; Northern and Southern Hemisphere.

The Northern Hemisphere refers to the Hemisphere above the equator and Southern Hemisphere refers to the Hemisphere below the equator.

The earth completes it's revolution about the sun in 365 days. For the first 365 days, the Northern Hemisphere receives more amount of the sun energy while for the second half, the Southern Hemisphere received more amount of the sun's energy.

During equinox however, both the Northern and the Southern Hemisphere receive the same amount of the sun's energy due to the zero tilt (rotation) of the Earth's axis.

The equinox in the Northern Hemisphere is referred to as Spring equinox while that of the Southern Hemisphere is referred to as Autumnal equinox.

These equinoxes occurs in the months of March and September every year.

Juli2301 [7.4K]3 years ago

3 0

In March and September both of the hemispheres receive the same amount of energy from the sun. this is because neither end of the axis is tilted toward the sun.

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Kalea throws a baseball directly upward at time t = 0 at an initial speed of 13.7 m/s. How high h does the ball rise above its r

Trava [24]

Answer:

h = 9.57 seconds

Explanation:

It is given that,

Initial speed of Kalea, u = 13.7 m/s

At maximum height, v = 0

Let t is the time taken by the ball to reach its maximum point. It cane be calculated as :

$v=u-gt$

$u=gt$

$t=\dfrac{u}{g}$

$t=\dfrac{13.7}{9.8}$

t = 1.39 s

Let h is the height reached by the ball above its release point. It can be calculated using second equation of motion as :

$h=ut+\dfrac{1}{2}at^2$

Here, a = -g

$h=ut-\dfrac{1}{2}gt^2$

$h=13.7\times 1.39-\dfrac{1}{2}\times 9.8\times (1.39)^2$

h = 9.57 meters

So, the height attained by the ball above its release point is 9.57 meters. Hence, this is the required solution.

7 0

3 years ago

Elements that easily transmit electricity and heat display the property know as ______

andre [41]

It is known as conductivity

7 0

3 years ago

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What is a type of pulley that increases the size and effort of force

12345 [234]

The answer is Movable

5 0

4 years ago

A 10-kg rock and a 20-kg rock are thrown upward with the same initial speed v0 and experience no significant air resistance. if

BartSMP [9]

At maximum height, initial velocity

$v_{0} =\sqrt{2gh}$

Here, h is maximum height and g is acceleration due to gravity.

According to above relation, the vertical height does not depend on the mass of body it depend only upon the initial velocity.

Therefore, the 20 kg rock reach the same height as 10 kg rock.

7 0

3 years ago

Calculate the rate constant for the first-order decay of 24na (t1/2 = 14.7 h).

trasher [3.6K]

This problem is pretty straight forward since we are given the half time and we simply have to find for the rate constant. The equation relating the two variable is:

t1/2 = ln(2) / k

where k is the rate constant, therefore:

k = ln(2) / t1/2

k = ln(2) / 14.7 h

6 0

3 years ago