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
mihalych1998 [28]
2 years ago
8

What causes a hypothesis to be rejected?

Physics
1 answer:
Rus_ich [418]2 years ago
8 0
If the statistical analysis shows that the significance level is below the cut off value they have set (either 0.05 or 0.01) they reject the null hypothesis and accept the alternative hypothesis
You might be interested in
A mover loads a 100 kg box into the back of a moving truck by
Andrews [41]

Answer:

hi....hru.....

Explanation:

7 0
2 years ago
The concept of critical density is just like the idea of escape velocity for a projectile launched from the earth. An object lau
ikadub [295]

Answer:

v = √ 2 G M/ R_{e}

Explanation:

To find the escape velocity we can use the concept of mechanical energy, where the initial point is the surface of the earth and the end point is at the maximum distance from the projectile to the Earth.

Initial

        Em₀ = K + U₀

Final

        Em_{f} =  U_{f}

The kinetic energy is k = ½ m v²

The gravitational potential energy is U = - G m M / r

r is the distance measured from the center of the Earth

How energy is conserved

       Em₀ =  Em_{f}

       ½ mv² - GmM / R_{e} = -GmM / r

       v² = 2 G M (1 /  R_{e} – 1 / r)

       v = √ 2GM (1 / R_{e} – 1 / r)

The escape velocity is that necessary to take the rocket to an infinite distance (r = ∞), whereby 1 /∞ = 0

        v = √ 2GM /  R_{e}

5 0
2 years ago
A 2.2kg block of ice slides across a rough floor. Its initial velocity is 2.5m/s and its final velocity is 0.50m/s. How much of
kirill [66]

Answer:A 2.2kg block of ice slides across a rough floor. Its initial velocity is 2.5m/s and its final velocity is 0.50m/s. How much of the ice block melted as a result of the work done by friction? (Latent Heat of water is 3.3*10^5J/kg)

Explanation:

7 0
3 years ago
A system absorbed 44 joules of heat from its surroundings. After doing work, the increase in the internal energy of the system i
Lunna [17]
Idk sorry maybe try @amyletbe
6 0
3 years ago
Read 2 more answers
The density of lead is 30.2g/cm^3.what is the value in kilograms per meter cube?
V125BC [204]
Answer:
11300 kgm3

Hope this helps
3 0
2 years ago
Other questions:
  • Tim sets up an experiment with 3 groups of runners. Group 1 smokes 1 pack per day. Group 2 smokes 2 packs per day. Group 3 smoke
    15·1 answer
  • Which option correctly defines the scientific method?
    15·1 answer
  • Your 64-cm-diameter car tire is rotating at 3.5 rev/s when suddenly you press down hard on the accelerator. After traveling 200
    6·1 answer
  • The study of anatomy and physiology assumes and describes a healthy body. Select the description below that does NOT explain why
    11·1 answer
  • In diving to a depth of 308 m, an elephant seal also moves 579 m due east of his starting point. What is the magnitude of the se
    8·1 answer
  • In order to close or reduce the digital divide, it is also necessary to address a gap in skills.a. True b. False
    14·1 answer
  • How does the wind turbine generator work?
    6·1 answer
  • Find the volume of an object with a density of 3.2 g/mL and a mass of 12 g.
    14·2 answers
  • A fast-moving car has 0.5 MJ of kinetic energy.
    11·1 answer
  • A 2.0 kg book is lying on a 0.78 m -high table. You pick it up and place it on a bookshelf 2.1 m above the floor.Part ADuring th
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!