explain why energy from the sun cannot reach us by conduction or convection?

Answer:

1) Work is a measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement. 2) Work is calculated through joules. 3) It's possible to calculate work by multiplying the amount of force applied by the distance that the force is applied. If we know the amount of force the stick applies to the puck and the distance that the stick is applying the force to the puck, we can figure out the amount of work done.

Explanation:

Hope this helped!- Nya~ :3

First and foremost, starlight appears less distorted in the thin atmosphere on mountaintops. At high altitudes, there is less atmosphere to absorb infrared energy, which reveals details about some of the coldest objects in the universe, such as clouds of gas and dust and the disks of dust that give birth to planets.

Answer:

It is a renewable resource as it renewably heats up water to a high temperature. Geothermal energy is more environmentally friendly than conventional fuel sources such as coal and other fossil fuels. In addition, the carbon footprint of a geothermal power plant is low.

Disadvantages: If dug deep underground, it can cause earthquakes. generates waste, reservoirs require proper management, it's location-specific, has high initial cost

Answer:

a magnet is a material with a North and South pole

Answer:

air and water

Explanation:

The matter through which a mechanical wave travels is called the medium (plural, media). There are three types of mechanical waves: transverse, longitudinal, and surface waves. They differ in how particles of the medium move when the energy of the wave passes through. The particles in a medium become disturbed and pass on this disturbance to the next one, and so on. So, the disturbance caused by the particles can travel through a medium such as air, ocean water, land, violin strings, Slinky coils, etc. Sound waves can travel through solids, liquids, or gases.

Answer:

A few examples.

After 8 hours of classes, you grab the door handle and start pushing on it, harder and harder, not realizing you have to pull. Applied force is how much you can exert on the door, plus the reaction of the frame. net force is zero - the door won't budge.

Indiana Jones, while trying to grab yet another treasure that belongs in a museum, triggered a trap and a sack weighting 600N is pushing over his head. Due to his old age he's not in shape, and he manage to push back with only 500N of force. Applied force is 600N from the weight, and 500N from the archeologist. With a net force of 100N towards the old man head.

Mario and Luigi have ran out of gasoline in their car, so they're stuck pushing. Due to being in peak condition, each one applies 800N to the side of the car, dragging it forward. Applied force is 800N from each plumber, and net force is 1600 N.

The motion or path of the tennis ball is the path of a projectile, which has

both vertical and horizontal motion.

The total horizontal distance traveled by the tennis ball during the entire

time it is in the air ≈ 16.514 meters.

Reasons:

The given parameters are;

The direction in which the ball is launched = 45°

The initial vertical velocity of the ball, [tex]v_y[/tex] = 9.0 m/s

The initial horizontal velocity of the ball, vₓ = 9.0 m/s

The time it takes the ball to reach the maximum height, t = 0.92 seconds after its launch

The total horizontal distance traveled, by the tennis ball is given by the formula;

[tex]\Delta d_x = \dfrac{v_1^2 \cdot \left( 2 \cdot cos(\theta) \sin(\theta)}{y} = \dfrac{2 \times v_x \times v_y}{g}[/tex]

Which gives;

[tex]\mathrm{The \ total \ distance \ travelled, \ \Delta} d_x = \dfrac{2 \times 9.0\times 9.0}{9.81} \approx 16.514[/tex]

The total horizontal distance traveled by the tennis ≈ 16.514 meters

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(A magnetic compass does not point to the geographic north pole. A magnetic compass points to the earth's magnetic poles, which are not the same as earth's geographic poles. Furthermore, the magnetic pole near earth's geographic north pole is actually the south magnetic pole. When it comes to magnets, opposites attract.)

Answer:

I am really sorry but I can't understand the question.

Can you translate the question to English?

Explanation:

Answer:

The movement, or a tendency to move, toward a center of gravity, as in the falling of bodies to the earth is called gravitation

Answer: Dispersion

Explanation:

We employed the pressure P formulas. the reading of the balance when the body is;

a. In air = 29.4 N

b. Fully immersed in water = 3.9 N

c. ⅓ immersed in water = 20.9 N

d. Fully immersed in paraffin = 3.1 N

Given that a body of mass 3kg and volume 4×10^-4m^3 is hung from balance graduated in newtons. To know the reading of the balance when the body is;

a. In air

b. Fully immersed in water

c. ⅓ immersed in water

d. Fully immersed in paraffin.

We will employ the pressure P formulas.

P = F/A

and

P = ρgh

Where

ρ = density

g = acceleration due to gravity

h = height

F = force

A = area

F/A = ρgh

Cross multiply

F = ρghA

Where hA = Volume V

Therefore, F = ρgV

a. In air

F = mg

F = 3 x 9.8

F = 29.4 N

b. Fully immersed in water

F = ρgV

F = [tex]10^{3}[/tex] x 9.8 x 4 x [tex]10^{-4}[/tex]

F = 3.92 N

c. ⅓ immersed in water

F = (ρgV)/3 + 2/3(mg)

F = 3.92/3 + (2/3 x 29.4)

F = 1.3067 + 19.6

F = 20.9N

d. Fully immersed in paraffin.

F = ρgV

F = 800 x 9.8 x 4 x [tex]10^{-4}[/tex]

F = 3.136 N

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Answer:

45555555555555555555

Explanation:

I think the number 2, not sure

Answer:

C

Explanation:

C is i thing

Answer:

Every Sentra is powered by a 149-hp 2.0-liter four-cylinder engine that pairs with a continuously variable automatic transmission (CVT) and front-wheel drive.

Explanation:

Answer:

Sorry

Explanation:

I really don't know what to say about this question I am not sure what to say about this

The book's initial speed = 2.83 m/s

The mass of the textbook, m = 0.75 kg

The final speed of the textbook, v = 0 m/s (Since it comes to rest)

The distance covered by the book, d = 1.2 m

Coefficient of kinetic friction, [tex]\mu = 0.34[/tex]

The frictional force between the table and the book is calculated as:

[tex]f_k=-\mu mg\\\\ f_k=-0.34 \times 0.75 \times 9.8\\\\f_k=-2.499N[/tex]

The workdone by the textbook is calculated as:

[tex]W = Fd\\\\W=2.499(1.2)\\\\W=2.9988J[/tex]

According to the work-kinetic energy theorem:

Workdone by the book = Change in Kinetic energy

[tex]W = 0.5m(v^2-u^2)\\\\-2.9988=0.5 \times 0.75 \times (0^2-u^2)\\\\-2.99988=-0.375u^2\\\\u^2=\frac{-2.9988}{-0.375} \\\\u^2=7.9968\\\\u=\sqrt{7.9968}\\\\u=2.83m/s[/tex]

The book's initial speed = 2.83 m/s

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Answer:

I don't know...

I'm sorry

Answer:

Refraction

Explanation:

Reflection involves a change in direction of waves when they bounce off a barrier.

Refraction of waves involves a change in the direction of waves as they pass from one medium to another.

Please mark as brainliest if this helps! :)

Answer:

thermal energy

Explanation:

Answer:

3 m/s

Explanation:

Kinetic energy of a body is given by the formula [tex]K= {1\over2} m v^2[/tex]. Let's replace everything we have and solve for what's left.

[tex]1125J = {1\over2}\cdot 250 kg \cdot v^2[/tex]

[tex]v^2 ={ 1125 \cdot 2 \over 250}}[/tex] or [tex]v= 3 {m \over s}[/tex]

Answer:

735 N

Explanation:

Answer:

the size of the shadow will be smaller due to smaller hands

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The Correct choice is ~

D. 18.0 Newtons

because the resultant force can't exceed 16 Newtons ~

Hi there!

(A)

When the rock reaches the peak, it will have a vertical velocity of 0 m/s. We can use the equation:

vf = vi + at

vf = final velocity (0 m/s)

vi = initial velocity (2 m/s)

a = acceleration (in this situation, due to gravity = 9.8 m/s²)

t = time (s)

0 = 2 + (-9.8)t

2/9.8 = t = .204 sec

(B)

Use the equation:

d = vit + 1/2at²

d = 2(.204) + 1/2(-9.8)(.204²)

d = .204 m

Let us begin by explaining the Energy transformation that will take place

Ok, let us discuss about why the idea will not work

Although the system will work, but to some extent, that is it will not sustain the process, over time the system will consume more energy than it will generate

Going my the law of thermodynamics "There is no perpetual motion machine of the first order" hence theoretically the system is not possible

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Answer:

F=10,000N

Explanation:

F=ma

m=5000kg

a=2m/s^2

[tex]F=(5000kg)*(2m/s^{2} )\\\\\\\\F=10000N[/tex]

Answer:

[tex]\boxed {\boxed {\sf 10,000 \ Newtons}}[/tex]

Explanation:

We are asked to find the force of Annabella's car when it hits a tree.

According to Newton's Second Law of Motion, force is the product of mass and acceleration.  Therefore, it is calculated using the following formula:

[tex]F=ma[/tex]

The mass of the car is 5000 kilograms and the acceleration is 2 meters per second squared.

Substitute the values into the formula.

[tex]F= (5000 \ kg)(2 \ m/s^2)[/tex]

Multiply.

[tex]F= 10,000 \ kg*m/s^2[/tex]

Convert the units. 1 kilogram meter per second squared is equal to 1 Newton, so our answer of 10,000 kg*m/s² is equal to 10,000 Newtons.

[tex]F= 10,000 \ N[/tex]

Annabella's car hits the tree with a force of 10,000 Newtons.