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4 years ago

In comparison with a steep slope, a gentle slope _____.

Physics

2 answers:

OverLord2011 [107]4 years ago

8 0

Answer:

The correct answer is requires more force over a shorter distance

Explanation:

I did the lesson in Odyssey ware and it said this was the correct answer

Hope This Helps :)

kifflom [539]4 years ago

6 0

A gentle slope requires less force over a longer distance as compared to steep slope.

Explanation:

Mechanical advantage of a slope is equal to the ratio of length of slope and the height. A steep slope has shorter length as compared to a gentle slope for the same height. Therefore, mechanical advantage of a gentle slope is more than that of a steep slope. Hence, a gentle slope requires less force over a long distance than a steep slope.

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Why does he have maximum potential energy at this point?

yan [13]

He is going the fastest speed

7 0

2 years ago

Differences in ocean-surface height can be measured by _____.\

bonufazy [111]

<h3><u>Answer;</u></h3>

Satellite

Differences in ocean-surface height can be measured by<u> Satellite</u>

<h3><u>Explanation;</u></h3>

The topography of the ocean or the height of the ocean surface relative to a level of no motion provides the information on tides, and the distribution of heat and mass in the Earths's oceans.
<em><u>The ocean topography is measured using satellites altimeter. Satellites use radar altimeters that are specially made to measure the height of the ocean surface. The satellites measure the height of the ocean surface with an accuracy of 3 cm relative to the center of the earth.</u></em>
Satellite altimeter combines precise orbit determination with accurate ranging by a microwave altimeter of ocean distance to the satellite.

3 0

3 years ago

Read 2 more answers

What the motion of an object that has an acceleration of 0 m/s

Degger [83]

<span>Everything in the system is stable and therefore the objects motion is stable. That is to say it is not changing what it is already doing. As far as i know zero times zero is still zero. In that case then the motion must be constant or stable.</span>

8 0

3 years ago

A car is traveling at 15 m/sm/s . Part A How fast would the car need to go to double its kinetic energy

GREYUIT [131]

Answer:

21.21 m/s

Explanation:

Let KE₁ represent the initial kinetic energy.

Let v₁ represent the initial velocity.

Let KE₂ represent the final kinetic energy.

Let v₂ represent the final velocity.

Next, the data obtained from the question:

Initial velocity (v₁) = 15 m/s

Initial kinetic Energy (KE₁) = E

Final final energy (KE₂) = double the initial kinetic energy = 2E

Final velocity (v₂) =?

Thus, the velocity (v₂) with which the car we travel in order to double it's kinetic energy can be obtained as follow:

KE = ½mv²

NOTE: Mass (m) = constant (since we are considering the same car)

KE₁/v₁² = KE₂/v₂²

E /15² = 2E/v₂²

E/225 = 2E/v₂²

Cross multiply

E × v₂² = 225 × 2E

E × v₂² = 450E

Divide both side by E

v₂² = 450E /E

v₂² = 450

Take the square root of both side.

v₂ = √450

v₂ = 21.21 m/s

Therefore, the car will travel at 21.21 m/s in order to double it's kinetic energy.

8 0

3 years ago

A light wave with an electric field amplitude of E0 and a phase constant of zero is to be combined with one of the following wav

Anarel [89]

Answer:

the greatest intensity is obtained from c

Explanation:

An electromagnetic wave stagnant by the expression

E = E₀ sin (kx -wt)

when two waves meet their electric fields add up

E_total = E₁ + E₂

the intensity is

I = E_total . E_total

I = E₁² + E₂² + 2E₁ E₂ cos θ

where θ is the phase angle between the two rays

Let's examine the two waves

in this case E₁ = E₂ = E₀

I = Eo2 + Eo2 + 2 E₀ E₀ coasts

I = E₀² (2 + 2 cos θ )

I = 2 I₀ (1 + cos θ )

let's apply this expression to different cases

a) In this case the angle is zero therefore the cosine is worth 1 and the intensity is I_total = 4 I₀

b) cos π = -1 this implies that I_total = 0

c) the cosine is 1,

I = E₀² + 4E₀² + 2 E₀ (2E₀) cos θ

I = E₀² (5 +4 cos θ)

I = E₀² 9

I = 9 Io

d) in this case the cos pi = -1

I = E₀² (5 -4)

I = I₀

e) we rewrite the equation

I = E₀² + 9 E₀² + 2 E₀ (3E₀) cos θ

I = Eo2 (10 + 6 cos θ)

cos π = -1

I = E₀² (10-6)

I = 4 I₀

the greatest intensity is obtained from c

3 0

3 years ago