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3 years ago

Which of the following describes how the moons of Jupiter are similar to Earth?

1 answer:

5 0

"Jupiter's moons orbit Jupiter much like the Earth orbits the Sun" describes how the moons of Jupiter are similar to Earth.

<u>Explanation:</u>

In the solar system, Jupiter, the one considered as the largest planet, whose earth's mass seems to be more than 300 times, it is also the most massive. Its diameter plays a major role in the percentage of moons encircling Jupiter since it has a wide area of gravitational strength to support several moons around it.

The orbital periods which range from seven hours to roughly three Earth years in Jupiter's moons. A few of the orbits are almost circular, whereas the moons farthest from Jupiter are more uneven.

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In the following figure, electric field at y axis will be maximum at y=?

Strike441 [17]

Because of symmetry electric field component in the x axis cancels out. Now just use electric field formula and slap that sine of theta cause you want the vertical component of electric field and multiply that by two since there’s two charges. I’ve shown my work. Hope it helps✌

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3 years ago

Read 2 more answers

Which of the following statements about features on the sun is true

pashok25 [27]

D is the answer because of the solar phonominals

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3 years ago

What is the change in electric potential energy when the dipole moment of a molecule changes its orientation with respect to e⃗

AleksandrR [38]

Electric potential energy of a dipole is given as

$U = - P.E$

$U = - PE cos\theta$

so change in the potential energy is given by

$U_f - U_i = (-PEcos\theta_2)- (-PEcos\theta_1)$

$\Delta U = PE (cos\theta_1 - cos\theta_2)$

here initially it was parallel to electric field while finally it is perpendicular to the electric field

so we have

$\Delta U = PE(cos 0 - cos 90)$

$\Delta U = PE$

so above is the change in potential energy of dipole

8 0

3 years ago

A tennis ball travels the length of the court 24m in 0.5s. Find the average speed

AnnZ [28]

Answer: average speed of the ball would be 48 mph

Explanation:

because all you have to do is multiply 24 x .5 and that gives you your answer

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3 years ago

A boat heads directly across a river. Its speed relative to the water is 3 m/s. It takes it 539 seconds to cross, but it ends up

nikklg [1K]

Answer:

3.24 m/s

Explanation:

Suppose that the boat sails with velocity (relative to water) direction being perpendicular to water stream. Had there been no water flow, it would have ended up 0m downstream

Therefore, the river speed is the one that push the boat 662 m downstream within 539 seconds. We can use this to calculate its magnitude

$v_r = 662 / 539 = 1.23 m/s$

So the boat velocity vector relative to the bank is the sum of of the boat velocity vector relative to the water and the water velocity vector relative to the bank. Since these 2 component vectors are perpendicular to each other, the magnitude of the total vector can be calculated using Pythagorean formula:

$v = \sqrt{v_b^2 + v_r^2} = \sqrt{3^2 + 1.23^2} = \sqrt{9 + 1.5129} = \sqrt{10.5129} = 3.24$ m/s

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3 years ago