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
Vilka [71]
2 years ago
9

Whose data did Kepler use to describe the motion of the planets?

Physics
2 answers:
lesya [120]2 years ago
8 0

Answer:

A. Tycho Brahe

Explanation:

the person above is correct :)

Levart [38]2 years ago
7 0

Answer:

Tycho Brahe

Explanation:

Tycho Brahe's accurate observations of planetary positions provided the data used by Johannes Kepler to derive his three fundamental laws of planetary motion.

You might be interested in
One form of energy can be _____ another type of energy.
kotegsom [21]

We can answer this one very quickly.  From the <em>Law of Conservation of Energy</em>, we know that "Energy can't be created or destroyed.".

So that only leaves us one way to complete the sentence in this question:

"One form of energy can be <em>transformed into</em> another type of energy. "  <em>(B)</em>

4 0
3 years ago
When light of wavelength 240 nm falls on a cobalt surface, electrons having a maximum kinetic energy of 0.17 eV are emitted. Fin
dusya [7]

Answer:

(a) 5.04 eV (B) 248.14 nm (c) 1.21\times 10^{15}Hz

Explanation:

We have given Wavelength of the light  \lambda = 240 nm

According to plank's rule ,energy of light

E = h\nu = \frac{hc}{}\lambda

E = h\nu = \frac{6.67\times 10^{-34} J.s\times 3\times 10^{8}m/s}{ 240\times 10^{-9} m\times 1.6\times 10^{-19}J/eV}= 5.21 eV

Maximum KE of emitted electron i= 0.17 eV

Part( A) Using Einstien's equation

E = KE_{max}+\Phi _{0}, here \Phi _0 is work function.

\Phi _{0}=E - KE_{max}= 5.21 eV-0.17 eV = 5.04 eV

Part( B) We have to find cutoff wavelength

\Phi _{0} = \frac{hc}{\lambda_{cuttoff}}

\lambda_{cuttoff}= \frac{hc}{\Phi _{0} }

\lambda_{cuttoff}= \frac{6.67\times 10^{-34} J.s\times 3\times 10^{8}m/s}{5.04 eV\times 1.6\times 10^{-19}J/eV }=248.14 nm

Part (C) In this part we have to find the cutoff frequency

\nu = \frac{c}{\lambda_{cuttoff}}= \frac{3\times 10^{8}m/s}{248.14 \times 10^{-19} m }= 1.21\times 10^{15} Hz

5 0
3 years ago
A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force. Let us take it that the force act
MA_775_DIABLO [31]

Answer:

cos 0 = 1.

Fs = 7×8 = 56 J

Explanation:

7 0
3 years ago
Las 3 leyes de klepler del sistema planetario<br><br><br><br> AYUDAA¡¡
shtirl [24]
I actually don't know. i speak english.
5 0
3 years ago
What is the SI unit of acceleration and work?​
Lerok [7]
A=m/s^2(meter per second square)
Work=joule
6 0
3 years ago
Other questions:
  • An ac generator with peak voltage 100 volts is placed across a 10-? resistor. What is the average power dissipated?
    13·1 answer
  • If a positively charged particle moves into a magnetic field traveling in a straight line, how would you expect it's motion to c
    5·2 answers
  • Using the projectiles equations for y and x at what second does the ball have a vertical velocity of -39.2 m/s^2
    8·1 answer
  • Two rockets are flying in the same direction and are side by side at the instant their retrorockets fire. Rocket A has an initia
    14·1 answer
  • PLEASE HELP - basic SUVAT stuff
    12·1 answer
  • The cheetah is one of the fastest accelerating animals, for it can go from rest to 28.0 m/s in 5.20 s. If its mass is 100 kg, de
    14·1 answer
  • 6. traction a. friction between a tire and the road.b. pushes a moving object out of a curve and into a straight linec. the abil
    15·1 answer
  • The kinetic energy of an object depends on two factors, ___, and ___. HINT: Remember comparing the kinetic energy of the marble
    5·2 answers
  • A man kicks the 150-g ball such that it leaves the ground at an angle of 60° and strikes the ground at the same elevation a dist
    8·1 answer
  • Which trend would you choose to forecast the number of water damage claims in 2010?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!