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Nana76 [90]
3 years ago
12

Assessing how well one variable predicts another variable is to blank as detecting cause-effect relationships between different

variables is to
Physics
2 answers:
Reptile [31]3 years ago
7 0
Are you asking about independent and dependent variables?
hammer [34]3 years ago
3 0

Answer:

D) correlational research; experimental research

Explanation:

In correlational research the effect that one variable has on the other is studied without the addition of any external factor by the researcher. The subject is studied in a natural environment.

In experimental research how and why one variable affects another variable is studied. The subject is studied in the presence of various different variables introduced by the researcher.

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A car traveling at 28.0 m/s28.0 m/s hits a bridge abutment. A passenger in the car, who has a mass of 66.0 kg,66.0 kg, moves for
netineya [11]

Answer:

The answer to your question is: F = 924 N

Explanation:

Data

v = 28 m/s

m = 66 kg

d = 56 cm

F = ?

Formula

v = d/t

a = v/t

F = ma

Process

                          t = d/v = 56 / 28 = 2 s

                          a = v/t = 28 / 2 = 14 m/s²

                          F = 66 (14) = 924 N

6 0
4 years ago
A group of air particles in a balloon are spread far apart and moving rapidly around inside the balloon. The balloon is placed i
Slav-nsk [51]

Answer:

1) The balloon will shrink

2) The balloon will grow bigger and regain its shape

Explanation:

By the kinetic theory of gases, we have;

v_{rms} = \sqrt{\dfrac{3 \cdot R \cdot T}{MW} }

P = \dfrac{n \cdot MW \cdot vrms^2}{3 \cdot V}

Where;

v_{rms} = RMS Speed

R = The universal gas constant

T = The temperature

MW = The Molecular weight

n = The number of moles

V = The volume

P = The pressure

1) When the balloon is placed in the refrigerator for  minutes, the temperature inside the balloon will drop and RMS speed will reduce, however due to the elastic wall of the balloon, the pressure will remain the same therefore the volume  will reduce and the balloon will shrink

2) When the balloon is placed on the kitchen counter, the temperature inside the balloon will rise leading to the increase in the RMS speed which will raise the pressure effect on the wall  of the balloon as the balloon is made of elastic material, as the pressure rises, the wall expands to keep the pressure constant and the volume occupied by the air particles will increase, the balloon will grow bigger and regain its shape.

6 0
3 years ago
Which statement best describes the energy changes that occur while a child is riding on a sled down a steep, snow-covered hill?
svp [43]
The answer is C, because they moved from a stand still to down the hill
4 0
4 years ago
A rock falls off a cliff. How fast will it be going after falling for 4.33 seconds?
bixtya [17]

Answer:42.43m/s

Explanation:According to vf=vi+at, we  can calculate it since v0 equals to 0. vf=0+9.8m/s^2*4.33s= 42.434m/s

4 0
1 year ago
Compare and contrast CLF and LED bulbs.
Arte-miy333 [17]

Explanation:

Comparison Chart

Basis For Comparison CFL Bulb LED Bulb

Definition The CFL is defined as the lamp which uses the low pressure mercury vapour gas for producing the visible light It is a PN junction diode which produces light when current passes through it in the forward direction.

Stand For Compact Fluorescent Lamp Light Emitting Diode

Working principle The electrons of mercury when excited emits ultraviolet light. This ultraviolet light when strikes with the fluorescent coating glass converts it into the visible light. The semiconductor material which emits light with the passage of current.

Power Consumption More Less

Mercury Contain Not contain

Destruction Difficult Easy

Efficient Less More

Ballast Requires Not requires

Lifespan 10,000 hours 50,000 hours and more.

Turn on Intensity Delay Quick

Expensive Less More

4 0
3 years ago
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