PHYSICS HIGH SCHOOL

What does the fox say

Answers

Answer 1

Answer:

Answer:

idk

Explanation:

Answer 2

Answer:

Answer: RING-DING-DING-DING-DING-DING-DING

Explanation:

LOL

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A 12 volt car battery produces more current than a 1.5 volt battery for a TV remote because...A. the tv remote has more kinetic energy.B. the tv remote has a greater difference in electric potential energy.C. the car bettery has a greater difference in electric potential energy.D. the car bettery has more kinetic energy.

Venus's average distance from the sun is 0.72 AU and Saturn's is 9.54 AU. Calculate the orbital velocity of Venus and Saturn around the sun. (The mass of the sun is 1.99 X 10^30 KG. an AU is 1.50 X 10^11 M.

Answers

The orbital velocity of Venus and Saturn around the sun is 8.854 x $10^8$ .

What is orbital velocity?

Orbital velocity is the speed required to achieve orbit around a celestial body, such as a planet or a star.

So you can compute the force of gravity on the planet

$GMm/r^2$

$(6.674 * 10^(-11))(1.99 * 10^(30))m / d^2(1.5 * 10^(11))^2$

Where d is the average distance of the planet from the sun and m is the mass of the planet (I will keep these as symbols so doing Saturn and Venus will be simple substitutions into one formula in the end).

Now realize that if they are in a stable circular orbit, then this force must provide the necessary centripetal force $mv^2/r$ or $mv^2 / d(1.5 * 10^(11))$

So we get:

$(6.674 * 10^(-11))(1.99 * 10^(30))m / d^2(1.5 * 10^(11))^2 = mv^2 / d(1.5 * 10^(11))$

The m's cancel out as does one

$1/d(1.5 * 10^(11))(6.674 * 10^(-11))(1.99 * 10^(30)) / d(1.5 * 10^(11)) = v^2$

Evaluating and square rooting yeilds:

$v = √(((8.854 * 10^8)/d))$

Now plug in 0.72 for venus and 9.54 for saturn

Venus = 35067.39 m/s

Saturn = 9633.75 m/s

Some precision was lost rounding to 8.854 x 10⁸, so if more precision is required type the whole thing from before into a calculator. Anyways the process is sound.

Learn more about orbital velocity here:

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So you can compute the force of gravity on the planet GMm/r^2
or (6.674 X 10^−11)(1.99 X 10^30)m / d^2(1.5 X 10^11)^2
Where d is the average distance of the planet form the sun and m is the mass of the planet (I will keep these as symbols so doing Saturn and Venus will be simple substitution into one formula in the end).

Now realize that if they are in stable circular orbit, then this force must provide the necessary centripetal force mv^2/r or mv^2 / d(1.5 X 10^11)

So we get:

(6.674 X 10^−11)(1.99 X 10^30)m / d^2(1.5 X 10^11)^2 = mv^2 / d(1.5 X 10^11)
The m's cancel out as does one 1/d(1.5 X 10^11)
(6.674 X 10^−11)(1.99 X 10^30) / d(1.5 X 10^11) = v^2
Evaluating and square rooting yeilds:
v = sqrt((8.854 X 10^8)/d)

Now plug in 0.72 for venus and 9.54 for saturn

Venus = 35067.39 m/s
Saturn = 9633.75 m/s

Some precision was lost rounding to 8.854 X 10^8, so if more presion is required just type the whole thing from before into a calculator. Anyways the process is sound

C. The driver is looking at her phone and has a total reaction time of 4.6 seconds as the car is moving at a constant speed of 11 m/s. If the driver slams on her brakes and slows down at a rate of -8.2 m/s2, what is the stopping distance for the car in this situation

Answers

Answer:

The stopping distance for the car when the driver slams on her brakes is 7.38 m.

Explanation:

The distance traveled for the car after stopping can be found using the following equation:

$v_(f)^(2) = v_(0)^(2) + 2ad$

Where:

vf is the final speed = 0 (it stops)

v₀ is the initial speed = 11 m/s

a is the acceleration = -8.2 m/s²

d is the distance =?

When the driver slams on her brakes the distance traveled is:

$d = -(v_(0)^(2))/(2a) = -((11 m/s)^(2))/(2*(-8.2 m/s^(2))) = 7.38 m$

Therefore, the stopping distance for the car when the driver slams on her brakes is 7.38 m.

I hope it helps you!

Which event can be excluded from a list of interactions among Earth's spheres?A solar flares
B volcanic eruption
C fracking for natural gas
D hurricane

Answers

Final answer:

Solar flares can be excluded from a list of interactions among Earth's spheres because they are not directly related to interactions among the geosphere, hydrosphere, atmosphere, and biosphere.

Explanation:

The event that can be excluded from a list of interactions among Earth's spheres is A solar flares. Solar flares are not directly related to interactions among Earth's spheres, which include the geosphere, hydrosphere, atmosphere, and biosphere.

On the other hand, volcanic eruptions, fracking for natural gas, and hurricanes are all examples of interactions among Earth's spheres. Volcanic eruptions involve the release of gases and materials from the geosphere into the atmosphere. Fracking for natural gas involves extracting resources from the geosphere and potentially impacting the hydrosphere. Hurricanes involve interactions between the atmosphere and the hydrosphere, resulting in powerful storms.

Therefore, the correct answer is A solar flares.

Learn more about Interactions among Earth's spheres here:

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Hurricane is the answer

State the career function of civil engineering

Answers

Answer:

Civil engineers design major transportation projects. Civil engineers conceive, design, build, supervise, operate, construct and maintain infrastructure projects and systems in the public and private sector, including roads, buildings, airports, tunnels, dams, bridges, and systems for water supply and sewage treatment.

A thermometer that uses a liquid to measure temperature works because

Answers

The liquid in a thermometer is sometimes colored alcohol but can also be a metallic liquid called mercury. Mercury and alcohol expand when heated and shrink when cooled. Inside the glass tube of a thermometer, the liquid has no place to go but up when the temperature is hot and down when the temperature is cold. That's how a thermometer that uses liquid to measure temperature.

a rule of thumb is that liquid expands when heated, so when liquid is in a given space one can measure how far the liquid moves when it gets heated.

Which term best describes the change in frequency of waves when there is motion between the source of the waves and the observer?a. the Doppler effect
b. the Avogadro effect
c. the motor wave effect
d. the wave frequency effect

Answers

The Doppler effect is the term that best describes the change in frequency of waves when there is motion between the source of the waves and the observer. The correct option among all the options that are given in the question is the first option or option "a". I hope the answer helps you.

Answer:

Explanation:

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A scientist wants to learn about Earth's oceans. Which of the following spheres should she most directly study? (2 points)OaAtmosphereObCryosphereOcGeosphereOdHydrosphere