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
Grace [21]
4 years ago
13

Maggie is a member of her school’s environmental club and is interested in recycling. She asks the question, “How does exposure

to the environment affect recyclable plastics?”
What best describes why and how Maggie should change her question to make it a better scientific question?

The answer to the question leads to a testable hypothesis, so the question should be changed to prevent testing.
The question involves giving an opinion about recycling, so it should be changed to rely only on facts.
The focus of the question is too broad, so it should be narrowed to a single environmental factor.
The results are too uncertain, so the question should be changed to one that has a known outcome.
Physics
1 answer:
adell [148]4 years ago
3 0

Answer:

C

Explanation:

Environmental factors provides ambiguity a particular one could be studied to see how it affects recyclable plastics.

You might be interested in
A boat of mass 250 kg is coasting, with its engine in neutral, through the water at speed 1.00 m/s when it starts to rain with i
bija089 [108]

Answer:

v_o\approx0.7059\ m.s^{-1}

Explanation:

Given:

mass of the boat, m=120\ kg

uniform speed of the boat, v=1\ m.s^{-1}

rate of accumulation of water mass in the boat, \dot m=100\ kg.hr^{-1}

time of observation, t=0.5\ hr

The mass of the boat after the observed time:

m_o=m+\dot m\times t

m_o=120+100\times 0.5

m_o=170\ kg

<u>Now using the conservation of momentum:</u>

m.v=m_o.v_o

120\times 1=170\times v_o

v_o\approx0.7059\ m.s^{-1}

4 0
3 years ago
A basketball comes down after it is shot because of __________
Vlada [557]

Answer:

gravity, friction, opposite, friction. hope that helps :)

Explanation:

7 0
3 years ago
Read 2 more answers
Which of Newton's laws is described below?
Marrrta [24]

Answer:

B second law

Explanation:

4 0
2 years ago
Read 2 more answers
8.
GuDViN [60]

This ratio (Fnet/m) is sometimes called the gravitational field strength

and is expressed as 9.8 N/kg ⇒ answer D

Explanation:

The gravitational field strength at a point is:

  • The gravitational force exerted per unit mass placed at that point.
  • This means that the gravitational field strength, g is equal to the force experienced by a mass of 1 kg in that gravitational field
  • Gravitational field strength = Weight/mass
  • Its unit is Newton per kilogram
  • Gravitational field strength ≈ 9.8 N/kg

From the notes above

The ratio \frac{F_{net}}{mass} = Gravitational field strength (g)

The answer is:

This ratio (Fnet/m) is sometimes called the gravitational field

strength and is expressed as 9.8 N/kg

Learn more:

You can learn more about gravitational field strength in brainly.com/question/6763771

LearnwithBrainly

5 0
3 years ago
Joe first focuses his attention (and his eyes) on the tree. The focal length of the cornea-lens system in his eye must be ______
kotykmax [81]

Answer: The focal length of the cornea-lens system in his eye must be LESS THAN the distance between the front and back of his eye.

Explanation:

The human eye the front part of the eye is the CORNEA. This is the tough white transparent part of the eye that helps in the refraction of light rays. While the backside of the eye is the RETINA. This is the part of the eye when images are focused.

When a normal eye is at rest, parallel rays from a distant object are focused on the retina. The ability of the eye - lens to focus points at different distances on the retina is known as accomodation. The adjustment of the eye lens to focus objects of varying distances is brought about by the ciliary muscles. The have the ability to change the shape of the eye which leads to change in focal length.

When a person with normal vision looks at a distant object at infinity, the lens brings parallel rays to focus on the retina. Thus, the furthest point which the eye can see distinctly is called the far point of the eye and it's infinity for a normal eye. But Joe was able to focus his eye on the tree, meaning that the tree was within his near point. This is the nearest point at which an object is clearly seen. Therefore, when the effective focal length of the cornea-lens system changes, it changes the location of the image of any object in one's field of view.

5 0
3 years ago
Other questions:
  • When you are ice skating, to get started, you push your stake backwards on the ice and, as a result, begin to move forward. whic
    12·1 answer
  • Can somebody help n explain I try to do it like 4 times don’t get it
    11·1 answer
  • What is the formula for potassium iodide
    15·2 answers
  • Imagine a raindrop starting from rest in a cloud 2 km in the air. If it fell with no air friction at all, it would accelerate to
    12·1 answer
  • From lowest energy to highest energy, which of the following correctly orders the different categories of electromagnetic radiat
    9·2 answers
  • If the temperature at the surface of Earth (at sea level) is 100°F, what is the temperature at 2000 feet if the average lapse ra
    8·1 answer
  • is the light transmitted by a filter brighter than, less brighter than, or the same brightness as the light that hits it? explai
    13·1 answer
  • Glider‌ ‌A‌ ‌of‌ ‌mass‌ ‌0.355‌ ‌kg‌ ‌moves‌ ‌along‌ ‌a‌ ‌frictionless‌ ‌air‌ ‌track‌ ‌with‌ ‌a‌ ‌velocity‌ ‌of‌ ‌0.095‌ ‌m/s.‌
    8·1 answer
  • Simplified. The absorption spectra of ions have been used to identify the presence of the elements in the atmospheres of the sun
    7·1 answer
  • Does anyone knows how to do this ?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!