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Deffense [45]
4 years ago
15

In a study, the data you collect is Habits on a Always/Sometimes/Never scale.What is the level of measurement?

Physics
1 answer:
zzz [600]4 years ago
8 0

Answer:

Ordinal

Explanation:

There are four levels of measurement which include the nominal, ordinal, interval, and ratio. The data collected above is ordinal data as it qualifies the data and still indicates the ordering of the data. It gives the observer an idea of the range of data collected or its rating although mathematical calculations may not be done with it.

The other forms of data include the nominal which simply qualifies the data, the interval which qualifies the data but which the differences between the data can be obtained, and of course the data has no starting point. The ratio scale which is similar to the interval scale but which the ratios between the data obtained can be compared.

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What is the magnitude of force required to accelerate a car of mass
mart [117]

Answer:

<h2>The answer is 8075 N</h2>

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

<h3>force = mass × acceleration</h3>

From the question

mass = 1.7 × 10³ kg = 1700 kg

acceleration = 4.75 m/s²

We have

force = 1700 × 4.75

We have the final answer as

<h3>8075 N</h3>

Hope this helps you

3 0
3 years ago
A researcher is using a particle accelerator in an experiment studying isotopes. How can the researcher change one isotope into
Illusion [34]
The researcher can change one isotope into a different isotope of the same element by ADDING OR REMOVING NEUTRONS.
Isotopes refers to two or more forms  of the same element, which have the same number of protons but different number of neutrons. The difference in the number of neutrons of a particular element is what brings about isotopes, thus, isotopes can be created by removing  or adding neutrons to a particular element.<span />
5 0
3 years ago
Read 2 more answers
A few years ago, an X-ray telescope detected a source called Cygnus X-3, whose intensity changed with a period of 4.8 hours. Thi
alina1380 [7]

Answer:

Explanation:

The star is revolving the black hole like earth revolves around the sun .so time period of rotation  T is given by the following relation

T² = \frac{4\pi^2\times R^3}{GM } , R is distance between black hole and star , M is mass of black hole

Given T = 4.8 hours

4.8² =  \frac{4\pi^2\times R^3}{GM }

Using the same equation for earth sun system

24² =  \frac{4\pi^2\times (50R)^3}{GM_s }  , Ms is mass of the sun and 50R is distance between the sun and the earth .

Dividing the equation

(\frac{4.8}{24})^2 = \frac{M_s}{M}\times\frac{1^3}{50^3}

\frac{M}{M_s} = 2x 10⁻⁴

7 0
3 years ago
A 6.0 kg box slides down an inclined plane that makes an angle of 39° with the horizontal. If the coefficient of kinetic frictio
Blababa [14]

Answer:

(B) 1.6 m/s^2

Explanation:

The equation of the forces acting on the box in the direction parallel to the slope is:

mg sin \theta - \mu N = ma (1)

where

mg sin \theta is the component of the weight parallel to the slope, with m = 6.0 kg being the mass of the box, g = 9.8 m/s^2 being the acceleration of gravity, \theta=39^{\circ} being the angle of the incline

\mu N is the frictional force, with \mu = 0.6 being the coefficient of kinetic friction, N being the normal reaction of the plane

a is the acceleration

The equation of the force along the direction perpendicular to the slope is

N-mg cos \theta =0

where mg cos \theta is the component of the weight in the direction perpendicular to the slope. Solving for N,

N=mg cos \theta

Substituting into (1), solving for a, we find the acceleration:

a=gsin \theta- \mu g cos \theta=(9.8)(sin 39^{\circ})-(0.6)(9.8)(cos 39^{\circ})=1.6 m/s^2

6 0
4 years ago
Vf=V0+at solve for a
dangina [55]

Answer:

See below

Explanation:

vf = vo + at      subtract vo from both sides

vf - vo = at       now divide both sides by t

(vf-vo) / t = a

6 0
1 year ago
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