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
dem82 [27]
3 years ago
6

To understand the interplay of observations and models you must first be able to distinguish between things that we observe and

things that we infer from models. Consider the following statements about the Sun. Classify each statement as an observation or as an inference based on the current, accepted model for the Sun. Observationsa. The photosphere is made mostly of hydrogen and heliumb. The photosphere emits ostly visible light.c. The corona is hotter than the photosphere.d. The sun emits neutrinos.e. The sun generates energy by fusing hydrogen into helium in its core.f. The core temperature is 10 million kg. The convection zone is cooler than the radiation zone.h. The composition of the photosphere is the same as that of the gas cloud that gave birth to our solar system.
Physics
1 answer:
Svetllana [295]3 years ago
3 0

Answer: a) Observation

b) observation

c) observation

d) observation

e) inference

f) inference

g) inference

h) inference

Explanation:

observation: The photosphere is made mostly of hydrogen and helium,The photosphere emits mostly visible light,The corona is hotter than the photosphere, The Sun emits neurtrinos

inferences: The Sun generates energy by fusing hydrogen into helium,The core temperature is 10 million k, The convection zone is cooler than the radiation zone,The composition of the photosphere is the same as that the gas cloud that have birth to our solar system.

You might be interested in
A bowling ball is 21.6 cm in diameter. What is the angular speed of these ball whenit is moving at 3.0 m/s?
sergejj [24]

Answer:

Angular speed = 27.78 rad/s (Approx)

Explanation:

Given:

Diameter = 21.6 cm

Speed = 3 m/s

Find:

Angular speed

Computation:

Radius = 21.6 / 2 = 10.8 cm = 0.108 m

Angular speed = v / r

Angular speed = 3 / 0.108

Angular speed = 27.78 rad/s (Approx)

3 0
2 years ago
A speed boat moving at a velocity of 25 m/s runs out of gas and drifts to a stop 3 minutes later 100 meters away. What is its ra
mr_godi [17]
<h2>Answer:</h2>

The rate of deceleration is -0.14m/s^{2}

<h2>Explanation:</h2>

Using one of the equations of motion;

v = u + at

where;

v = final velocity of the boat = 0m/s (since the boat decelerates to a stop)

u = initial velocity of the boat = 25m/s

a = acceleration of the boat

t = time taken for the boat to accelerate/decelerate from u to v =   3 minutes

<em>Convert the time t = 3 minutes to seconds;</em>

=> 3 minutes = 3 x 60 seconds = 180seconds.

<em>Substitute the values of v, u, t into the equation above. We have;</em>

v =  u + at

=> 0 = 25 + a(180)

=> 0 = 25 + 180a

<em>Make a the subject of the formula;</em>

=> 180a = 0 - 25

=> 180a = -25

=> a = -25/180

=> a = -0.14m/s^{2}

The negative value of a shows that the boat is decelerating.

Therefore, the rate of deceleration of the speed boat is 0.14m/s^{2}

5 0
3 years ago
What is the length of the x-component of the vector shown below?
ollegr [7]

Answer:

Option B. 8.1

Explanation:

From the question given above, the following data were obtained:

Angle θ = 71°

Hypothenus = 25

Adjacent = x

Thus, we can obtain the x component of the vector by using the cosine ratio as illustrated below:

Cos θ = Adjacent /Hypothenus

Cos 71 = x/25

Cross multiply

x = 25 × Cos 71

x = 25 × 0.3256

x = 8.1

Therefore, the x component of the vector is 8.1

4 0
3 years ago
A toolbox of mass 3.2kg is lowered by a rope from the roof to the ground. Find the acceleration of the toolbox when the force of
Lisa [10]

Answer:

The answer to your question is:

a) 2.7 m/s²

b) -3.6 m/s²

Explanation:

Data

mass of the toolbox = 3.2 kg

a = ?

F = 40 N and F = 20 N

g = 9.81 m/s²

Formula

Second law of motion = F = ma

                              a + g = F / m

                              a = F/m - g

a)                            a = 40/3.2 - 9.81

                              a = 2.69 ≈ 2.7 m/s²   positive up

b)                            a = 20/ 3.2 - 9.81

                              a = 6.25 - 9.81

                                  = - 3.56 ≈ - 3.6 m/s²  negative down

8 0
3 years ago
Why can Muhammad exert a greater punching force with his bare fist than he can while wearing a
weqwewe [10]

Answer:

the glove could be heavy so slowing down his power

Explanation:

JUST GUESSED

5 0
3 years ago
Other questions:
  • Help? Will give thanks if right (thank you)
    6·1 answer
  • The lithosphere consists of _______. select one:
    7·1 answer
  • If the diameter of the space station is 730 m , how many revolutions per minute are needed for the "artificial gravity" accelera
    9·1 answer
  • What color is the sky
    12·2 answers
  • What is the difference between a series circuit and a parallel circuit?
    11·1 answer
  • Which of the following statements is true? Communicable diseases cannot be transmitted by nonliving objects. Sexually transmitte
    11·2 answers
  • A system experiences a change in internal energy of 36 kJ in a process that involves a transfer of 14 kJ of heat into the surrou
    11·1 answer
  • A wave on a string is observed to have a frequency of 3 Hertz. Its wavelength is 6 centimeters.
    14·1 answer
  • Which atoms have the highest electronegativity?
    10·1 answer
  • "My distance to the center of the earth is about 4000 miles when I am on the surface. If I go to a height of 8000 miles above th
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!