A theory that stands the test of time and becomes the basis for a field of

Physics

2 answers:

Morgarella [4.7K]3 years ago

8 0

Answer:

Paradigm

Explanation:

A theory is a set of statements that purport to say something about the way the world works. A theory that stands the test of time and becomes the basis for a field of study is known as paradigm. It provides the background or the frame that allows a theory to be tested and measured.

mestny [16]3 years ago

5 0

Answer:

A working theory

Explanation:

It's name defines it for itself, and also the other three options are not appropriate: conclusion is the result of a logical process, hypothesis is the premises one wants to test in an experiment, and paradigm is more ample than just a working theory, since it encompasses the set of all methods, standards, concepts and thoughts associated with a particular field of research.

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When you bent the plastic ruler, what did you observe in its size?

WARRIOR [948]

Answer:

The size will increase.

Explanation:

When you bend a plastic ruler, it's size will increase because it is elastic and will exhibit elastic deformation. When it is been bent, it will continue to stretch until it get to a point where it will not be able to regain it formal shape, it size wound of increase. Therefore when the ruler get to elastic limit and you have bend it to the point it cannot regain it's formal shape back, it will remain bent and if further force is apply on it,it will break.

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3 years ago

Help my in science state of matter

Arada [10]

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2 years ago

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A child of mass 40.0 kg is in a roller coaster car that travels in a loop of radius 7.00 m. at point a the speed of the car is 1

pav-90 [236]

I attached the missing picture.
The force of seat acting on the child is a reaction the force of child pressing down on the seat. This is the third Newton's law. The force of a child pressing down the seat and the force of the seat pushing up on the child are the same.
There two forces acting on the child. The first one is the gravitational force and the second one is centrifugal force. In this example, the force of gravity is always pulling down, but centrifugal force always acts away from the center of circular motion.
Part A
For point A we have:
$F_a=F_cf-F_g$
In this case, the forces are aligned, centrifugal is pointing up and gravitational is pulling down.
$F_a=m\frac{v^2}{r}-mg=179 $N$
Part B
At the point, B situation is a bit more complicated. In this case force of gravity and centrifugal force are not aligned. We have to look at y components of this forces, y-axis, in this case, is just pointing upward.
$F=F_{cf}\cos(30)-mg=m\frac{v^2}{r}\cos(30)-mg=153.2$N$
Part C
The child will stay in place at point A when centrifugal force and force of gravity are in balance:
$F_g=F_{cf}\\
mg=m\frac{v^2}{r}\\
gr=v^2\\
v=\sqrt{gr}=8.29\frac{m}{s}$