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natita [175]
2 years ago
6

In a scientific experiment, the variable manipulated or controlled by the experimenter is called the

Physics
2 answers:
Naddik [55]2 years ago
7 0

Independent.

The independent variable is manipulated and the effects are noted.

miskamm [114]2 years ago
3 0
Answer:
The variable manipulated or controlled by the experimenter is called the independent variable.

Example:
If the flow velocity at the bottom of a tank is measured by varying the height of water in the tank, we are measuring velocity as a function of water height.
Therefore,
water height  =  independent variable (controlled)
velocity =  dependent variable (measured in response to water height).

Mathematically,
v = f(h)
where v =  response variable (dependent)
            h = controlled variable (independent).
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Review. For a certain type of steel, stress is always proportional to strain with Young's modulus 20 × 10¹⁰ N/m² . The steel has
timurjin [86]

1.58\times 10^{-4}\ \mathrm{s}$ is the time interval elapses before the back end of the rod receives the message that it should stop.

Given:

Length of the rod, L = 80 cm = 0.800 m

Young's modulus, Y = 20 \times 10^{10}\;N/m^{2}

steel density, \rho = 7.86 \times 10^{3}\;kg/m^{3}

The speed of the wave in the rod is,

$v = \sqrt{\frac{Y}{\rho}} = \sqrt{\frac{20\times 10^{10}\ \mathrm{N/m^2}}{7.86\times 10^3\ \mathrm{kg/m^3}}} = 5044\ \mathrm{m/s}$

Consequently, the length of the rod's end is traveled by the wave in at

$t=\frac{L}{v} = \frac{0.800\ \mathrm{m}}{5044\ \mathrm{m/s}} = 1.58\times 10^{-4}\ \mathrm{s}$

Hence, 1.58\times 10^{-4}\ \mathrm{s}$ is the time interval elapses before the back end of the rod receives the message that it should stop.

<h3>What are Newtons Laws?</h3>

The three fundamental laws of classical mechanics known as Newton's laws of motion describe how an object's motion and the forces acting on it interact. The following paraphrase of these statutes is available

Unless a force acts upon a body, it remains at rest or in continual straight-line motion.

When a force acts on a body, the force is equal to the time rate at which the body's momentum changes.

When two bodies exert force on one another, the direction and amount of the force are opposed.

Isaac Newton first identified the three laws of motion in his 1687 book Philosophize Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy).

They served as the cornerstone for classical mechanics as Newton used them to examine and explain the motion of numerous physical objects and systems. The conceptual foundations of classical physics have been reconstructed in several ways since Newton, utilizing various mathematical techniques that have revealed insights that were hidden in the original, Newtonian formulation.

To know more about Newtons Laws, visit:

brainly.com/question/27573481

#SPJ4

7 0
1 year ago
An object is place 30.5 cm from a convex lens that has a focal length of 8.0cm.where is the image ?
77julia77 [94]

Answer:

Image is between F and 2F. And the exact location is:

q = 10.84 cm

Explanation:

The convex lens form different kinds of images with different sizes and locations, for the different positions of an object. In this case, the object is placed 30.5 cm from the convex lens with a focal length of 8 cm. This means that it is the case of the object placed beyond 2F. In this case, the image formed has the following characteristics:

1. Image is real.

2. Image is inverted

3. Image is diminished

<u>4. Image is located between F and 2F</u>

For exact location we use the thin lens formula:

\frac{1}{f} = \frac{1}{p} + \frac{1}{q}

where,

f = focal length = 8 cm

p = object distance = 30.5 cm

q = image distance = ?

Therefore,

\frac{1}{8\ cm} = \frac{1}{30.5\ cm} + \frac{1}{q}  \\\frac{1}{8\ cm} - \frac{1}{30.5\ cm} = \frac{1}{q}

<u>q = 10.84 cm</u>

7 0
2 years ago
Which of these is a cultural service—a non material benefit people get from the environment
Firdavs [7]
The answer is Providing national parks
6 0
3 years ago
Read 2 more answers
Steve has a mass of 78 kg and is standing still on very slippery ice while holding a 2.5 kg can of peas. Steve throws the can to
anzhelika [568]
Answer: 0.28 m/s


Let

M1 = mass of Steve
V1 = velocity of Steve
M2 = mass of can
V2 = velocity of can

Because momentum is a conserved quantity:

P1 - P2 = 0

So

M1*V1 - M2*V2 = 0

78.0kg(V1) - 2.5kg(8.7m/s) = 0

78.0(V1) = 21.75

V1= 0.28 m/s
5 0
3 years ago
What is the wave speed if the period is 4.0 seconds and the<br> wavelength is 1.8 m?
ELEN [110]

Answer:

0.45 m/s

Explanation:

7 0
2 years ago
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