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3 years ago

In a scientific experiment, the_

Physics

2 answers:

inysia [295]3 years ago

7 0

C dependent variable because dependent means relying on something else

Svetradugi [14.3K]3 years ago

5 0

The value of a dependent variable changes in response to other changes in a scientific experiment.

Answer: Option C

Explanation:

In the course of going through a scientific experiment, we encounter two types of variables in the calculations,

An independent variable
The dependent variable

An independent variable doesn’t change in terms of values throughout the experiment and remains constant respective to all the changes whereas dependent variables are affected by the changes in the values of other variables or the modes of experiment.

The independent variable is termed as the presumed cause and the dependent variable is termed as the presumed effect. The subject of experiment is to find out the exact or relevant values of the dependent variables that can be a person, place, thing or a phenomenon.

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If the sunlight is covered up by clouds or other things the temperature will be a little cooler, because the sun rays arent hitting things and making them warmer

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3 years ago

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An electron enters a region of uniform perpendicular en and bn fields. it is observed that thevelocity nv of the electron is una

konstantin123 [22]

v is perpendicular to both E and B and has a magnitude E/B

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3 years ago

A 2.4 kg block is dropped onto a spring and platform of negligible mass. The block is released

statuscvo [17]

The speed of the block when the compression is 15 cm is 9.85 m/s.

The given parameters;

mass of the block, m = 2.4 kg
height of the block, h = 5 m
compression of the spring, x = 25 cm = 0.25 m

The spring constant is calculated as follows;

$F = kx\\\\mg = kx\\\\k = \frac{mg}{x} \\\\k = \frac{2.4 \times 9.8}{0.25} \\\\k = 94.08 \ N/m$

The speed of the block when the compression is 15 cm can be determined by applying the principle of conservation of energy;

$\Delta K.E = \Delta P.E\\\\\frac{1}{2} m(v^2 - v_{0 }^2 ) = mgh - \frac{1}{2} kx^2\\\\\frac{1}{2} mv^2 = mgh - \frac{1}{2} kx^2\\\\mv^2 = 2mgh - kx^2\\\\v^2 = \frac{2mgh - kx^2}{m} \\\\v = \sqrt{\frac{2mgh - kx^2}{m}} \\\\v = \sqrt{\frac{(2 \times 2.4 \times 9.8 \times 5) - (94.08 \times 0.15^2)}{2.4}} \\\\v = 9.85 \ m/s$

Thus, the speed of the block when the compression is 15 cm is 9.85 m/s.

Learn more here:brainly.com/question/14289286

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3 years ago

A ball is projected with an angle o from the top of a tower of height h with velocity vo. The ball strikes the ground after a ce

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3 years ago

Typically during thunderstorms most lightning strikes carry a negative electric charge; only a few carry a positive charge. Thun

Ierofanga [76]

Answer: Option (D) is correct.

Explanation:

Considering the hypothesis elaborated in this comprehension, it's given that areas that tend to lie near forest fires usually have extra positive strikes since smoke carries positively charged particles. In rudimentary term, this states that occurrence of positively charged particles will result in extra positive strikes.

Option (D) states that occurrence of extra positive strikes will be there even weeks after the charge of smoke particles have been dissociated.

Therefore this option, most seriously undermines the hypothesis.

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4 years ago