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
natita [175]
2 years ago
8

8. Noticing how much food is on your lunch tray is a quantitative observation because

Physics
1 answer:
zhenek [66]2 years ago
5 0

Answer:

you are making an observation that uses numbers.

Explanation:

You might be interested in
What is the the steadiest firing position?
Paha777 [63]
The closer you are to the ground the more accurate you'll be.  That's why most snipers are in the "prone" position. 
3 0
3 years ago
When an experiment is replicated, how should the results of the two experiments compare?
olasank [31]
When the experiment is replicated, this means the conduction of the second experiment, should be related, or similar, to your first results. 
4 0
3 years ago
Read 2 more answers
In a controlled experiment, which variable does the investigator change?
Bas_tet [7]

Answer:

The manipulated variable is also known as the independent variable

Explanation:

When remembering this remember independent as in you independently change the outcome

7 0
3 years ago
Read 2 more answers
Make I the subject<br> E=VIt
slava [35]

To Make I the subject you need to get it by itself. To do this divide both sides by V and t:

I = E/Vt

5 0
3 years ago
You have a horizontal grindstone (a disk) that is 86 kg, has a 0.33 m radius, is turning at 92 rpm (in the positive direction),
Rudiy27

Answer:

a) α = 0.338 rad / s²  b)   θ = 21.9 rev

Explanation:

a) To solve this exercise we will use Newton's second law for rotational movement, that is, torque

    τ = I α

    fr r = I α

Now we write the translational Newton equation in the radial direction

    N- F = 0

    N = F

The friction force equation is

    fr = μ N

    fr = μ F

The moment of inertia of a saying is

    I = ½ m r²

Let's replace in the torque equation

    (μ F) r = (½ m r²) α

    α = 2 μ F / (m r)

    α = 2 0.2 24 / (86 0.33)

    α = 0.338 rad / s²

b) let's use the relationship of rotational kinematics

    w² = w₀² - 2 α θ

    0 = w₀² - 2 α θ

    θ = w₀² / 2 α

Let's reduce the angular velocity

     w₀ = 92 rpm (2π rad / 1 rev) (1 min / 60s) = 9.634 rad / s

    θ = 9.634 2 / (2 0.338)

     θ = 137.3 rad

Let's reduce radians to revolutions

    θ = 137.3 rad (1 rev / 2π rad)

    θ = 21.9 rev

7 0
3 years ago
Other questions:
  • Unmoving objects are being acted on by balance forces. TRUE or FALSE?
    11·2 answers
  • The electric field in a region of space increases from 0 to 2150 N/C in 5.00 s. What is the magnitude of the induced magnetic fi
    13·1 answer
  • What mediums are best for light waves?
    9·1 answer
  • Isaac drop ball from height og 2.0 m, and it bounces to a height of 1.5 m what is the speed before and after the ball bounce?
    6·1 answer
  • A laser beam is incident at an angle of 30.0° from the vertical onto a solution of corn syrup in water. The beam is refracted to
    7·1 answer
  • A projectile is fired with initial speed vo at an angle of 45o above the horizontal. Assume no air resistance.
    5·1 answer
  • Suppose a log’s mass is 5 kg. After burning, the mass of the ash is 1 kg. What can you predict has happened to the other 4 kg?
    13·1 answer
  • Which is an example of current electricity?
    11·1 answer
  • Find the speed of a rock being thrown 20.5 meters (m) to the left in 4.0s.
    6·2 answers
  • PLEASE HELPPPP !!!! Scientific investigations must be well ____ to be sure the data collected will help answer the scientists qu
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!