A mountain climber ascends a mountain to its peak. The peak is 12,470 ft above sea level. The climber then descends 80 ft to meet a fellow climber. Find the climber's elevation above sea level after meeting the other climber. A. -12,390 ft. B. 12,550 ft. C. 11,670 ft. D. 12,930 ft

Answers

Answer 1

Answer: The answer is 12,390 ft.

At first, a climber is at 12,470 ft above sea level. But then, he goes down 80 ft to meet a fellow climber. So, this simply needs to be distracted:
12,470 ft - 80 ft = 12,390 ft
This is the elevation above sea level at which he meet the other climber.

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The orbits of planets being elliptical was one the planetary laws developed by

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The correct answer is Kepler

Final answer:

The concept that planets move in elliptical orbits was established by Johannes Kepler in his First Law of Planetary Motion. This significant idea disrupted the earlier belief of circular orbits and brought tremendous knowledge in our solar system understanding.

Explanation:

The fact that the orbits of planets are elliptical was part of the planetary laws developed by the renowned astronomer and mathematician Johannes Kepler. Damaging the former belief of circular orbits, Kepler, based on detailed and exhaustive astronomic observations, established his First Law of Planetary Motion which stated that planets move in elliptical orbits with the Sun at one of the two foci. This was a significant breakthrough in understanding our solar system and continues to be fundamental in physics and astronomy today.

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How much work is required to turn an electric dipole 180° in a uniform electric field of magnitude E = 46.0 N/C if the dipole moment has a magnitude of p = 3.02 × 10−25 C·m and the initial angle is 64°?

Answers

Answer:

$W=1.22*10^(-23)J$

Explanation:

Torque and energy of an electric dipole in an electric field we find:

$W=U(\alpha_(o)+\pi )-U(\alpha_(o) )=-pE(cos(\alpha_(o)+\pi )-cos(\alpha_(o) ))\nW=2pECos\alpha_(o)\n W=2(3.02*10^(-25)C.m )(46.oN/C)Cos64\nW=1.22*10^(-23)J$

Final answer:

The work required to turn an electric dipole 180° in a uniform electric field is -4.89 × 10^-24 J.

Explanation:

To calculate the work required to turn an electric dipole 180° in a uniform electric field, we can use the formula:

W = -pE(1 - cosθ)

where W is the work done, p is the dipole moment, E is the electric field strength, and θ is the angle between the dipole moment and the electric field.

Plugging in the given values:

W = - (3.02 × 10-25 C·m)(46.0 N/C)(1 - cos(180° - 64°))

Simplifying the equation gives the work done to be -4.89 × 10-24 J.

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The Earth has a radius of 6,400 kilometers. A satellite orbits the Earth at a distance of 12,800 kilometers from the center of the Earth. If the weight of the satellite on Earth is 100 kilonewtons, the gravitational force on the satellite in orbit is?It would be great if you could add a few words of explanation.

Answers

By using a universal gravitational force, we can get that $F_(g) = (G. m_(1) . m_(2))/( r^(2) )$ .

For note : r is a distance from center of the earth to the object.

Then, if $r_(1)$ is 6.400 km, and if $r_(2)$ is 12.800 km,
we can say that $r_(2)$ is $2r_(1)$

In first equation we can say that :
$F_(g) = (G.m_(1) m_(2) )/( r_(1)^(2) ) = 100.000 N$

then in second equation we can say that :
$F_(g) = (G.m_(1) m_(2) )/( r_(2)^(2) )$ ,
$F_(g) = (G.m_(1) m_(2) )/( (2r_(1))^(2) )$ (because $r_(2)$ is $2r_(1)$ )
$F_(g) = (G.m_(1) m_(2) )/( 4r_(1)^(2) )$ ,
we can say that : $F_(g) = (1)/(4) (G.m_(1) m_(2) )/( r_(1)^(2) )$
so, by plugging first equation into second equation, we can get
$F_(g) = (1)/(4) (G.m_(1) m_(2) )/( r_(1)^(2) ) = (1)/(4) . 100.000 N = 25.000 N$

Karissa is conducting an experiment on the amount of salt that dissolves in water at different temperatures. She repeats her tests several times using the same procedure.What can Karissa do to further increase confidence in the results of her experiment?

have another scientist run the same exact procedure in her lab
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calculate the average amount of salt that dissolves to summarize findings
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Answers

Answer:

C.) Calculate the average amount of salt that dissolves to summarize findings

Explanation:

Just telling you, nobody reads these things. They just look at the answer and say oh i got it right now but you should bc i got a 50 on this quiz and this was one of them that was right so believe me when i say, i got this question right. UwU <333333333

Answer:

Calculate the average amount of salt that dissolves to summarize finding

-The third choice/ C-

Have a good day :)

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Calculate the average power output from the water in the kettle to the surroundings in 2 hours

Answers

The Last one ☝️ I think

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Answers

D, muscular strength. This is more or less the entire function of muscles, to turn energy into force.

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