1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
GREYUIT [131]
3 years ago
15

Kepler discovered that planets move faster when they are closer to the sun. Which scientist discovered the reason they move fast

er?
a. Brahe
b. Copernicus
c. Newton
d. Ptolemy
Physics
2 answers:
Anna007 [38]3 years ago
8 0
<h3><u>Answer;</u></h3>

C. Newton

<h3><u>Explanation; </u></h3>
  • <em><u>According to Kepler, the orbital speed of a planet varies, depending on its distance from the Sun. The closer a planet is to the Sun, the stronger the Sun’s gravitational pull on it, and the faster the planet moves. The farther it is from the Sun, the weaker the Sun’s gravitational pull, and the slower it moves in its orbit. </u></em>
  • <em><u>While thinking on Kepler's laws, Newton realized that all motion, whether it was the orbit of the Moon around the Earth or an apple falling from a tree, followed the same basic principles.</u></em>
NISA [10]3 years ago
7 0
Pretty sure it was Sir Issac Newton 
You might be interested in
A light wave passes through an aperture (that is, a narrow slit). When it does so, the degree to which the wave spreads out will
crimeas [40]

Explanation:

Single slit diffraction

Diffraction is the phenomenon of spreading out of waves as they pass through an aperture or around objects. Diffraction occurs when the size of the aperture or obstacle is of the same order of magnitude as the wavelength of the incident wave. For very small aperture sizes, the vast majority of the wave is blocked. in case of  large apertures the wave passes by or through the obstacle without any significant diffraction.

7 0
3 years ago
A firefighting crew uses a water cannon that shoots water at 25.0 m/s at a fixed angle of 53.0° above the horizontal. The fire-f
zysi [14]

Answer:

8.8 m and 52.5 m

Explanation:

The vertical component and horizontal component of water velocity leaving the hose are

v_v = vsin(\alpha) = 25sin(53^0) = 25*0.8 = 19.97 m/s

v_h = vcos(\alpha) = 25cos(53^0) = 25*0.6 = 15 m/s

Neglect air resistance, vertically speaking, gravitational acceleration g = -9.8m/s2 is the only thing that affects water motion. We can find the time t that it takes to reach the blaze 10m above ground level

s = v_vt + gt^2/2

10 = 19.97t - 9.8t^2/2

4.9t^2 - 19.97t + 10 = 0

t= \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}

t= \frac{19.9658877511823\pm \sqrt{(-19.9658877511823)^2 - 4*(4.9)*(10)}}{2*(4.9)}

t= \frac{19.9658877511823\pm14.24}{9.8}

t = 3.49 or t = 0.58

We have 2 solutions for t, one is 0.58 when it first reach the blaze during the 1st shoot up, the other is 3.49s when it falls down

t is also the times it takes to travel across horizontally. We can use this to compute the horizontal distance between the fire-fighters and the building

s_1 = v_ht_1 = 15*0.58 = 8.8 m

s_2 = v_ht_2 = 15*3.49 = 52.5m

8 0
3 years ago
If Judy walks 2 blocks north, 5 blocks west, and then 2 blocks south, what is her final
VladimirAG [237]

Answer: 2 blocks east if i'm not mistaken.

7 0
3 years ago
As the solar system formed, most of its mass became concentrated in one part of it. What is that that part?
sertanlavr [38]
That was sun as some smaller masses formed planets and other remaining formed sun
4 0
3 years ago
Explain why a diverging lens is used to correct nearsightedness (difficulty seeing objects far away).
Darina [25.2K]

Answer:

so that it can diverge the light to make sure that it focused on the ratina and the image is formed.

Explanation:

nearsightedness is when the light is focused in front of the ratina and for an image to be formed in the eye, the light must be focused on the ratina so to correct that we use the diverging lenses so that it will diverge the light and allow the cornea and the lens to converge it so it is focused on the ratina.

8 0
3 years ago
Read 2 more answers
Other questions:
  • A ball is dropped from a height of 2 m. how long will it take this ball to reach the ground?
    13·1 answer
  • A spacecraft returning from a lunar mission approaches earth on a hyperbolic trajectory. At its closest approach A it is at an a
    11·1 answer
  • A pulley is used to lift a heavy mass from the floor to the platform. The IMA of the system is 5 and the AMA is 2.5. What is the
    15·2 answers
  • Eva is in a closed, dark room. She uses her arm muscles to turn on a lamp. When she moves her hand closer to the lamp, the light
    14·2 answers
  • when an incandescent light bulb is turned on, its thin wire filament heats up quickly. as the temperature of this wire filament
    12·1 answer
  • A galloping pony speeds past you at 5 m/s. The frequency of the sound produced by the hooves on the dirt is 221 Hz. Assume the s
    10·2 answers
  • Air is flowing through a rocket nozzle. Inside the rocket the air has a density of 5.25 kg/m3 and a speed of 1.20 m/s. The inter
    13·1 answer
  • SORRY! COULDN'T EDIT MORE INFO ON MY LAST QUESTION! RE ASKING
    12·1 answer
  • If a block is in equilibrium the magnitude of the block's acceleration is
    8·2 answers
  • Describe and explain the motion of a small ball floating on a pond when waves travel across the pond
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!