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
tamaranim1 [39]
3 years ago
6

A scientific theory?

Physics
1 answer:
Sonbull [250]3 years ago
8 0
<span>A scientific theory is a specific type of theory that is used in the scientific method.  The theories are not guesses they are reliable sources of the real world.</span>
You might be interested in
A track coach records how long it takes a sprinter to run 100 meters the track coach is recording what dimension of behavior
melamori03 [73]
Behavior has at least six dimensions, which are: frequency, duration, latency, topography, locus, and force. Since the coach is recording how long it takes, the track coach is recording the duration behavior because duration is a synonym for time. Duration is your answer.
5 0
3 years ago
Microwave transmission involves sending signals from one microwave station to another. What is this often called?
astraxan [27]
It is called fixed wireless

4 0
3 years ago
What would happen to the amount of matter on earth if mass were not conserved during changes of state?
attashe74 [19]
<span>earth would be thrown off its balance and nature would be in danger of too many resources and not enough resources </span>
4 0
3 years ago
Read 2 more answers
A 20-Kg child is on a swing attached to 3.0 m-long chains. The child swings back and forth, swinging out to a 60-degree angle. (
kvv77 [185]

Answer:

 v = 29.4 m / s

Explanation:

For this exercise we can use the conservation of mechanical energy

Lowest starting point.

          Em₀ = K = ½ m v²

final point. Higher

          Em_{f} = U = m g h

Let's use trigonometry to lock her up

          cos 60 = y / L

          y = L cos 60

Height is the initial length minus the length at the maximum angle

           h = L - L cos 60

           h = L (1- cos 60)

energy is conserved

         Em₀ = Em_{f}

          ½ m v² = mgL (1 - cos 60)

         v = 2g L (1- cos 60)

 

let's calculate

          v² = 2 9.8 3.0 (1- cos 60)

          v = 29.4 m / s

6 0
3 years ago
A particle moves along the x axis so that its velocity at time t is given by v(t)=
vodomira [7]

Answer:

a = 0.7267 ,  acceleration is positive therefore the speed is increasing  

Explanation:

The definition of acceleration is

         a = dv / dt

they give us the function of speed

         v = - (t-1) sin (t² / 2)

         a = - sin (t²/2) -  (t-1) cos (t²/2)  2t / 2

         a = - sin (t²/2) - t (t-1)  cos (t²/2)

the acceleration for t = 4 s

          a = - sin (4²/2) - 4 (4-1) cos (4²/2)

          a = -sin 8 - 12 cos 8

remember that the angles are in radians

          a = 0.7267

the problem does not indicate the units, but to be correct they must be m/s²

We see that the acceleration is positive therefore the speed is increasing

6 0
3 years ago
Other questions:
  • Which one of the following bodies has only potential energy?
    8·1 answer
  • An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. A 470-g sample of silver at an initial temperat
    9·1 answer
  • A MEMS-based accelerometer has a mass of m = 2 grams, an equivalent spring constant of k = 5 N/m, and an equivalent damping coef
    12·1 answer
  • One light-year is the distance light travels in one year. This distance is equal to 9.461 1015 m. After the sun, the star neares
    6·1 answer
  • When working with vectors, you will often see right triangles. What are the consistent properties of these triangles?
    14·1 answer
  • One light-hour is the distance that light travels in an hour. How far is this, in kilometers? (Recall that the speed of light is
    10·1 answer
  • Jack is falling down the hill at a speed of 12 m/s. If Jack has a mass of 45 kg, what is his kinetic energy?
    15·1 answer
  • Jack was sitting, reading a book when all of a sudden he felt he was "losing his mind." His heart beat faster and he began to sw
    8·1 answer
  • QUICKK I NEED HELP!!<br> How is a mineral different from an element rock
    12·2 answers
  • A branch falls from a tree How fast is the branch moving after 0 28 seconds
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!