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
mel-nik [20]
3 years ago
10

A valid hypothesis must have test for proving what?

Physics
1 answer:
Novosadov [1.4K]3 years ago
7 0
A valid hypothesis must have test for proving the observation and is realistic, it considers the varibales it wants to measure. And it is tested either finding significance or not in the relationship between the studied variables.

<span>They utilize and make use of the scientific method in order to have clear basis and evidence for their investigations. Research method is always used to answer every scientific inquiry and in gaining evidential data or knowledge. The scientific method has the following process or at least undergoes the process of
1. Observation</span> 
2. Hypothesis 
3. Experimentation 
4. Interpretation of data 
5. Evaluating the data 
6. Passing and recording the data 

<span>These steps are crucial and the empirical data that these scientists obtain are very important to keep that is why research paper, thesis and dissertations exists.<span> 
</span></span>

You might be interested in
A metal ball of mass 100 g is heated to 90°C and then cooled to 25°C. The heat lost in the process is 2.5 kJ. Another metal ball
kobusy [5.1K]

Explanation:

q = mCΔT

where q is heat,

m is mass,

C is specific heat capacity,

and ΔT is temperature change.

For the first ball:

2500 J = (100 g) C (90°C − 25°C)

C = 0.385 J/g/°C

For the second ball:

5000 J = (200 g) C (90°C − 25°C)

C = 0.385 J/g/°C

The two metals have the same specific heat, and are likely the same metal (possibly copper or zinc).

3 0
3 years ago
Read 2 more answers
An object with a mass of 4.91 kg rests on a plane inclined 42.34 ° from horizontal. What is the component of the weight force th
12345 [234]

the perpendicular component will be = Wy

Wy = w * cos 42.34 = 48.11 N x cos 42.34 = 35.54 N

3 0
1 year ago
Name each type of symbiosis and explain how the two species are affected
disa [49]
Frogs
snakes if there food chain is mesesed up it dont work no more

7 0
3 years ago
A ball is pushed into a spring-loaded launcher with a force of 20 N, which compresses the spring 0.08 m.
damaskus [11]

Answer:

0.8J

Explanation:

Given parameters:

Force  = 20N

Compression  = 0.08m

Unknown:

Spring constant  = ?

Elastic potential energy  = ?

Solution:

To solve this problem, we use the expression below:

           F = k e

F is the force

k is the spring constant

e is the compression

             20  = k x 0.08

              k  = 250N/m

Elastic potential energy;

       EPE  = \frac{1}{2} k e²    =  \frac{1}{2}  x 250 x 0.08²

 Elastic potential energy = 0.8J

3 0
2 years ago
A 2.3 kg block of copper is heated at atmospheric pressure such that its temperature increases from 6 oC to 90 oC. How much heat
Shtirlitz [24]

Answer:

the  heat absorbed by the block of copper is 74368.476J

Explanation:

Hello!

To solve this problem use the first law of thermodynamics that states that the heat applied to a system is the difference between the initial and final energy considering that the mass and the specific heat do not change so we can infer the following equation

Q=mCp(T2-T1)

Where

Q=heat

m=mass=2.3kg

Cp=0.092 kcal/(kg C)=384.93J/kgK

T2=Final temperatura= 90C

T1= initial temperature=6 C

solving

Q=(2.3kg)(384.93\frac{J}{kgC} )(90C-6C)=74368.476J

the  heat absorbed by the block of copper is 74368.476J

7 0
3 years ago
Other questions:
  • Question 1
    12·1 answer
  • I need help with this question ASAP
    9·1 answer
  • How do liquid water, ice, and water vapor differ from each other?
    15·2 answers
  • Which equation expresses the conservation of mechanical energy in a system that involves kinetic energy, gravitational potential
    9·1 answer
  • How do I figure out if the acceleration is negative, positive or zero ?
    13·1 answer
  • Name the characteristics of electro magnetic waves that i) increases ii) remains constant in the electromagneticspectrum as one
    6·1 answer
  • A 1.695 kg block of lead is 10 cm long, 5 cm high, and 30mm wide. Calculate the density of the lead
    8·1 answer
  • Calculate the height of a column of carbon tetrachloride, CCl4(l), with a density of 1.59 g/mL that exerts the same pressure as
    14·1 answer
  • Fnet = 110 N
    14·1 answer
  • The upward normal force exerted by the floor is 710 N on an elevator passenger who weighs 720 N . You may want to review (Pages
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!