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koban [17]
3 years ago
8

Which hypothesis could be used in a scientific experiment and possibly lead to more hypotheses and experimentation? If the amoun

t of chocolate chips put into cookie increases, then the cookies will taste better, because everybody prefers chocolate cookies. If students spend more time reading on their own, their ELA grades will increase, because they will have more practice analyzing what they read. If young people spend more time playing a musical instrument than video games, they will be more cool, because music has been more popular throughout history. If a car is painted a darker color, then it will drive farther and more efficiently, because drivers prefer darker-colored cars
Physics
2 answers:
Trava [24]3 years ago
6 0
"If students spend more time reading on their own, their ELA grades will increase, because they will have more practice analyzing what they read," because the first and third are simply opinions, music may be cool to some but not to everyone and not everyone prefers chocolate cookies.
AlladinOne [14]3 years ago
5 0

Answer:

The correct answer will be option-If students spend more time reading on their own, their ELA grades will increase, because they will have more practice analyzing what they read.

Explanation:

A scientific hypothesis is a proposed idea or an "educated guess" based on the prior research and predictions which can be tested through the experiments.

A scientific hypothesis can lead us to reach a conclusion related to the scientific issue which can lead to the formation of another hypothesis.

In the given question, the option which includes the reading and practice can be best explained and lead to another hypothesis as the hypothesis is not based on the personal ideas or opinions but previous research evidence could be found.  The hypothesis experiments can be performed.

Thus, the selected option is the correct answer.

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A coal - fired power station produces 100MJ of electrical energy when it is supplied with 400MJ of energy from its fuel. The eff
Alexus [3.1K]

Answer:

100 divide by 400 times 100 percent

8 0
2 years ago
A ball rolls down a hill and hits a box. The momentum of the ball decreases. Which happens to the momentum? Select one of the op
Irina-Kira [14]
<span>So we want to know what happens to the momentum of the ball that rolls down hill and hits a box. So we need to use the law of conservation of momentum which states that the momentum must be conserved. It cant be transformed into inertia or mass. It can only be transferred to other object via some interactions like collisions. So it has to be a. transferred to the box and that is the correct answer. </span>
7 0
3 years ago
Match the property of a sound wave to the correct definition. A. amplitude . B. frequency  . C. period . D. pitch  E. loudness 
Maru [420]

Amplitude: How dense the medium is in the compression part of the wave, and how empty the rarefied area is.

Frequency: The number of wavelengths that pass a position in 1 second.

loudness: The quality of the sound that is most closely linked to the amplitude of the sound wave.

Period: The amount of time that it takes one wavelength to pass by a position.

Pitch: The quality of the sound that is most closely linked to the frequency of the sound wave.

5 0
3 years ago
Read 2 more answers
What is the mass of a ball that has 29j of potential energy and is lifted 2.0m?​
Salsk061 [2.6K]

Answer:

1.48kg

Explanation:

Here,

potential energy (P.E) = 29j

height (h) = 2m

acceleration due to gravity(g) =

9.8m {s}^{ - 2}

mass(m) = ?

we know,

P.E = mgh

or, 29 = m×9.8×2

or, 29/19.6 = m

or,m = 1.48kg

6 0
1 year ago
A human being can be electrocuted if a current as small as 51.0 ma passes near the heart. an electrician working with sweaty han
boyakko [2]

The fatal current is 51 mA = 0.051 Ampere.

The resistance is 2,050Ω .

Voltage = (current) x (resistance)

            =  (0.051 Ampere) x (2,050 Ω)  =  104.6 volts .

==================

This is what the arithmetic says IF the information in the question
is correct.

I don't know how true this is, and I certainly don't plan to test it,
but I have read that a current as small as  15 mA  through the
heart can be fatal, not  51 mA .

If 15 mA can do it, and the sweaty electrician's resistance is
really 2,050 Ω, then the fatal voltage could be as little as  31 volts !

The voltage at the wall-outlets in your house is  120 volts in the USA !
THAT's why you don't want to stick paper clips or a screwdriver into
outlets, and why you want to cover unused outlets with plastic plugs
if there are babies crawling around.
6 0
3 years ago
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