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
yaroslaw [1]
3 years ago
15

Sir Isaac Newton determined that gravity has a fixed acceleration on Earth. The earth pulls objects towards it with a fixed acce

leration at -9.8 m/s2. This is a _____________ ____________, as it states a scientifically accepted fact about the natural world. A) scientific law B) scientific theory C) natural hypothesis D) scientific evaluation
Physics
2 answers:
Pavlova-9 [17]3 years ago
6 0

Answer:

A) scientific law

Explanation:

Scientific laws are laws that are well oberved and proved all around the globe with different measures and different experiments this is because scientific laws they can predict a wide variation of physical phenomenoms, in this case since gravity is observable and can be proved with experiments that are consistent all around the globe, is a scientific law.

ozzi3 years ago
3 0

A.  Scientific Law.  The mathematics surrounding the acceleration due to gravity is a law.  It is calculated from the universal law of gravity.  However, the explanation of the idea of gravity is a theory.  This falls back to the idea that science is about disproving ideas that we currently believe, rather than proving ideas are correct.  Unless we can disprove an idea, we have to accept the possibility that it is true; the more trials we have of being unable to disprove something, the more accepted it will be.  Yet, no idea can be without doubt and certainty be accepted for what it is.  So, to sum it up, scientific laws are factual descriptions (by formula or word) of phenomenon which always occur given specific conditions.  On the other hand, scientific theories are explanations of the causes underlying these phenomena, the explanation formulated in such a way that they can be disproven.

You might be interested in
During a tennis serve, a racket is given an angular acceleration of magnitude 150 rad/s^2. At the top of the serve, the racket h
QveST [7]

Answer:

270 m/s²

Explanation:

Given:

α = 150 rad/s²

ω = 12.0 rad/s

r = 1.30 m

Find:

a

The acceleration will have two components: a radial component and a tangential component.

The tangential component is:

at = αr

at = (150 rad/s²)(1.30 m)

at = 195 m/s²

The radial component is:

ar = v² / r

ar = ω² r

ar = (12.0 rad/s)² (1.30 m)

ar = 187.2 m/s²

So the magnitude of the total acceleration is:

a² = at² + ar²

a² = (195 m/s²)² + (187.2 m/s²)²

a = 270 m/s²

3 0
4 years ago
How do we prove the earth is round? What evidence do we have and reasoning?
Jlenok [28]

Answer: Go to the harbor. When a ship sails off toward the horizon, it doesn't just get smaller and smaller until it's not visible anymore. Instead, the hull seems to sink below the horizon first, then the mast. When ships return from sea, the sequence is reversed: First the mast, then the hull, seem to rise over the horizon.

Climbing to a high point will allow you to be able to see farther if you go higher. If the Earth was flat, you'd be able to see the same distance no matter your elevation

7 0
4 years ago
Read 2 more answers
Starting from rest, a basketball rolls from top of a hill to the bottom, reaching a translational speed of 6.8 m/s. Ignore frict
kkurt [141]

Answer:

Explanation:

for baseball

(a) Let the mass of the baseball is m.

radius of baseball is r.

Total kinetic energy of the baseball, T = rotational kinetic energy + translational kinetic energy

T = 0.5 Iω² + 0.5 mv²

Where, I be the moment of inertia and ω be the angular speed.

ω = v/r

T = 0.5 x 2/3 mr² x v²/r² + 0.5 mv²

T = 0.83 mv²

According to the conservation of energy, the total kinetic energy at the bottom is equal to the total potential energy at the top.

m g h = 0.83 mv²

where, h be the height of the top of the hill.

9.8 x h = 0.83 x 6.8 x 6.8

h = 3.93 m

(b) Let the velocity of juice can is v'.

moment of inertia of the juice can = 1/2mr²

So, total kinetic energy

T = 0.5 x I x ω² + 0.5 mv²

T = 0.5 x 0.5 x m x r² x v²/r² + 0.5 mv²

m g h = 0.75 mv²

9.8 x 3.93 = 0.75 v²

v = 7.2 m/s

7 0
3 years ago
Form a hypothesis about how deeply water could erode and about how deeply glaciers could erode
Softa [21]
A hypothesis is an educated guess. It's your own opinion!
8 0
4 years ago
Of the three sciences, physics, chemistry, and biology, the most complex is
Agata [3.3K]

Answer:

I would probably say C to be completely honest

Explanation:

If you agree make sure to give me a like

6 0
2 years ago
Other questions:
  • Why is there a universe at all
    10·1 answer
  • the large,flat piece of wood within a piano serves the same purpose as(a)a bamboo reed(b)a set of wooden drum sticks(c)a guitar
    6·2 answers
  • A student claims that any object in motion must experience a force that keeps it in motion. Do you agree or disagree? Explain yo
    14·2 answers
  • The simplest form of a substance
    11·1 answer
  • A student was producing 75 watts of power while applying a constant force of 225 newtons to slide a box of books 2.0 meters acro
    10·1 answer
  • Variations in the resistivity of blood can give valuable clues about changes in various properties of the blood. Suppose a medic
    13·1 answer
  • A 45.2-kg person is on a barrel ride at an amusement park. She stands on a platform with her back to the barrel wall. The 3.74-m
    8·1 answer
  • What is the gravitational acceleration close to the surface of a planet with a mass of 9ME and radius of 3RE, where ME and RE ar
    8·1 answer
  • In the concluding paragraph, how does the author make the conflicting point of view that vegetarianism is strange and unnatural
    9·2 answers
  • Erwin Schrödinger developed the quantum model of the atom. What scientific knowledge was necessary for Schrödinger’s work?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!