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
Korvikt [17]
3 years ago
7

Kepler's____ of planetary motion states that the planets have an elliptical orbit, with the Sun at one focal point of the ellips

e. A. 1st law B. 2nd law C. 3rd law
Physics
1 answer:
pentagon [3]3 years ago
6 0
A.Kepler's first law of planetry motion.
You might be interested in
A student, who weighs 720N, is standing on a bathroom scale and riding an elevator that is moving downwards with a speed that is
jasenka [17]

Answer:

1) The mass of the student is approximately 73.39 kg

2) The net force on the student is approximately 947.523 N

3) The value the scale will read is approximately 96.59 kg

Explanation:

The given parameters are;

The weight of the student = 720 N

The speed at which the elevator is decreasing = 3.1 m/s²

1) The weight of the student = The mass of the student × The acceleration due to gravity

The acceleration due to gravity is a constant = 9.81 m/s²

Substituting the known values gives;

720 N = The mass of the student × 9.81 m/s²

∴ The mass of the student = 720 N/(9.81 m/s²) ≈ 73.39 kg

2) The forces acting on the student are;

i) The force of gravity which is the weight of the student acting downwards

ii) The inertia force of the slowing elevator acting downwards in the same direction as the weight of the student

The net force, F_{net} = The weight of the student + The inertia force of the slowing elevator

∴ The net force, F_{net} = 720 N + 73.39 kg × 3.1 m/s² ≈ 947.523 N

3) The scale will read the mass of the student as follows;

Mass reading of student on the scale = Force on scale/9.81

∴ Mass reading of student on the scale = 947.523/9.81 ≈ 96.59 kg

The value the scale will read = 96.59 kg.

3 0
3 years ago
What is the efficiency (w/qh) of an ideal carnot heat engine operating between a hot region at t= 400 k and a cold one at t= 300
Vinvika [58]
The efficiency of an ideal Carnot heat engine can be written as:
\eta = 1-  \frac{T_{cold}}{T_{hot}}
where
T_{cold} is the temperature of the cold region
T_{hot} is the temperature of the hot region

For the engine in our problem, we have T_{cold}=300 K and T_{hot}=400 K, so the efficiency is
\eta= 1 - \frac{300 K}{400 K}=0.25
4 0
3 years ago
What is the perfect amount of sunlight needed on a planet.
gogolik [260]

Answer:

20 years Light.

Explanation:

There's no practical explanation just math's.

6 0
2 years ago
Explain how the visible light spectrum is a spectrum within a spectrum.
Dahasolnce [82]

Answer:

In the visible spectrum of light, the color of the light depends on the frequency. The visible spectrum is always the same for a rainbow or the separated light from a prism. The order of colors is red, orange, yellow, green, blue, indigo, and violet.

Explanation:

7 0
2 years ago
In a given chemical reaction, the energy of the products is kess than the energy of the reactants. Which statement is true for t
deff fn [24]

Answer: Released

Explanation: Energy is released in this reaction possibly in the form of heat thus it is an exergonic and or exothermic reaction.

5 0
3 years ago
Other questions:
  • Two cars cover the same distance in a straight line. Car a covers the distance at a constant velocity. Car b starts from rest an
    10·1 answer
  • A crane performs 1820 J of work by lifting an object 35 meters. How much force did the crane exert?
    8·1 answer
  • The planet Jupiter has an acceleration due to gravity that is approximately 2.4 times as much as the earth (23.2 m s2 ). Which o
    5·2 answers
  • Why does the band of stability curve upward at high atomic numbers? excess neutrons are required due to the repulsion between th
    14·1 answer
  • A thermocouple junction, which may be approximated as a sphere, is to be used for temperature measurement in a gas stream. The c
    11·1 answer
  • Interactive Solution 22.61 offers one approach to problems such as this one. The secondary coil of a step-up transformer provide
    10·1 answer
  • The statement that "the lowest energy configuration for an atom is the one having the maximum number of unpaired electrons allow
    5·2 answers
  • An environmental scientist performs research to discover what is in the solid
    13·2 answers
  • WILL GIVE BRAINLIEST!!!
    12·1 answer
  • In the early twentieth century, _______ redefined psychology as "the science of observable behavior."
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!