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OleMash [197]
3 years ago
7

Which statement best describes perigee?

Physics
1 answer:
Alex17521 [72]3 years ago
6 0

Whenever you see "-gee" in the description of a point in an orbit,
you know it's talking about an orbit of the Earth.  You see the same
piece of a word in "geology" and "geography".  "Geometry" began
as the study of measuring places on the Earth, so that you and your
neighbor could agree on where your field ends and his begins, and
if you wanted to buy part of his field from him, the two of you could
go outside, do some measurements, and agree on what area you're
paying him for.

"Perigee" and "apogee" are the points in the orbit of the Moon, or a
TV satellite, or the International Space Station, where the orbiting body
is nearest or farthest from the Earth.  "Perigee" is the lowest/nearest point. 
"Apogee" is the highest/farthest point.

If the description has "-helion" in it instead of "-gee", then it's talking about
an orbit around the sun, like points in the Earth's orbit.  The "-helion" comes
from the Greek word "Helios" for the Sun.
Earth is at perihelion during the first few days of January, and at aphelion
during the first few days of July.  (That's right ... nearest to the sun in January,
and farthest from the sun in July.)

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Magnetic field lines curve out from one pole and return to the same pole. Please select the best answer from the choices provide
Crank

Magnetic field lines always forms closed loop in such a way that it originates from North pole and then terminates back into the South pole

Inside the magnet we will draw the field lines from south pole to north pole

So it is not possible that magnetic field lines originates from north pole and again terminates at the same pole

So this is

FALSE

6 0
4 years ago
Which of the following are possible units for a spring constant?
ch4aika [34]

Answer:

D

Explanation:

The standard international (SI) unit for spring constant is N/m, so N/km is the same thing but bigger.

7 0
3 years ago
Read 2 more answers
A gull is flying horizontally 10.80 m above the ground at 6.00 m/s. The bird is carrying a clam in its beak and plans to crack t
UkoKoshka [18]

Answer:

v_y = 14.55 m/s

Explanation:

given,

height at which gull is flying = 10.80 m

speed of the gull = 6 m/s

acceleration due to gravity = 9.8 m/s²

Relative to the seagull, the x-speed is 0,

because the seagull has the same x-speed.

Only the y-speed counts:

v_y^2 = u^2 + 2 g h

v_y^2 = 0^2 + 2 g h

v_y = \sqrt{2gh}

v_y = \sqrt(2\times 9.8 \times 10.8)  

v_y = \sqrt(211.68)

v_y = 14.55 m/s

hence, the speed at which the clam smash the rock is v_y = 14.55 m/s

8 0
3 years ago
Because of the Coriolis effect, surface ocean currents are deflected to the ________ of their path of motion in the Northern Hem
Mila [183]

Answer:

Right

Explanation:

Because of the Coriolis effect, surface ocean currents are deflected to the Right of their path of motion in the Northern Hemisphere.

Since the Earth is revolving on its axis, flowing air in the Northern Hemisphere are deflected to the right and in the Southern Hemisphere to the left. The consequence of Coriolis is called this deflection.

7 0
3 years ago
Explain how the gravitational potential energy of an object can be changed.
inna [77]

Answer:

Change in Potential energy, pe = Final potential energy - Initial potential energy

Explanation:

∆p.e = Final p.e - Initial p.e

From the equation ∆p.e = (mgh) final - (mgh) initial

4 0
3 years ago
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