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4 years ago

Fill in the blanks to complete each statement about the heating of Earth’s surface.

Physics

2 answers:

zepelin [54]4 years ago

8 0

Earth takes in thermal energy from the sun in a process called Terrestrial absorption.

Sunlight strikes Earth’s surface at different angles. This angle is called the angle of solar incidence

Explanation:

Sun is the primary source for heat and light for all of us. It emits a vast amount of heat energy in the space, some part of which is intercepted by the Earth. This energy is absorbed by the Earth in the form of Terrestrial absorption.

Earth is oblate in shape. Light rays from the Sun strikes Earth’s surface at a different angle. This angle is called an angle of solar incidence.

The equatorial region receives incoming solar radiation perpendicularly (at 90 degrees) which decreases as one moves towards poles.

-Dominant- [34]4 years ago

8 0

Answer: absorption, insolation

Explanation: its literally in the question

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3 years ago

By what factor will the electrostatic force between two charged objects change when the amount of charge on one object doubles?

Andre45 [30]

Answer:

The electrostatic force between two charge doubles when when the amount of charge on one object doubles.

Explanation:

Force between two charge particle $F=\frac{1}{4\pi\epsilon } \frac{q_1\cdot\ q_2}{r^{2} }$

Where, $\frac{1}{4\pi\epsilon } = constant$

$q_1,q_2\ magnitude\ of\ charges.\\r\ is\ the\ distance\ between\ the\ particles.$

Now suppose as per the question

$q_1= 2 q_1\ with\ q_2\ and\ r\ with\ same\ value.\\Hence\ force\ between\ the\ particle\ F_2 =2 F$

Hence, electrostatic force between two charge doubles when when the amount of charge on one object doubles.

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4 years ago

How would the terminal velocity of a piece of tissue paper compare to the terminal velocity of a rock?

matrenka [14]

Answer: Rock require larger drag force and to achieve it rock need to move at a very high terminal velocity.

Explanation: Terminal velocity is defined as the final velocity attained by an object falling under the gravity. At this moment weight is balanced by the air resistance or drag force and body falls with zero acceleration i.e. with a constant velocity.

Case 1: Terminal velocity of a piece of tissue paper.

The weight of tissue paper is very less and it experiences an air resistance while falling downward under the effect of gravity.

Downward gravitational force, F = mg

Upward air resistance or friction or drag force will be $f_{1}$

So, paper will attain terminal velocity when mg = $f_{1}$

Case 2: Rock is very heavy and require larger air resistance to balance the weight of rock relative to the tissue paper case.

Downward force on rock, F = Mg

Drag force = $f_{2}$

Rock will attain terminal velocity when Mg = $f_{2}$

Mg > mg

so, $f_{2}$ > $f_{1}$

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