Ask question

Ask question

All categories

Yakvenalex [24]

3 years ago

7

Why do scientists often take several measurements of the same object, average them together, and use the average value as the me

asurement?

1 answer:

DaniilM [7]3 years ago

7 0

Answer:

To minimize the practical errors and improve the accuracy.

Explanation:

Scientists take several measurements and use the average of all the measured values to minimize the practical errors due to unavoidable circumstances and be close to the true value.

True value is the actual value of a measured parameter without any error, it is the value which is proposed in the design of a certain object.

Variations may occur in the measurement due to wear and tear, dust and air pressure. It is almost impossible to create ideal surrounding for the measurement procedure.

You might be interested in

A 1.83 kg book is placed on a flat desk. Suppose the coefficient of static friction between the book and the desk is 0.442 and t

fredd [130]

Answer:7.92 N

Explanation:

Given

mass of book $m=1.83\ kg$

coefficient of static friction $\mu _s=0.442$

coefficient of kinetic friction $\mu _k=0.240$

To move the book, one need to overcome the static friction

Static friction $F_s=\mu _sN$

$F_s=\mu _s\times 1.83\times 9.8$

$F_s=0.442\times 1.83\times 9.8$

$F_s=7.92\ N$

After overcoming the Static friction , Force needed to move the block is

$F_k=\mu _kN$

$F_k=0.240\times 1.83\times 9.8$

$F_k=4.30\ N$

8 0

3 years ago

a light object and a heavy object have the same kinetic energy. which has the greater momentum? explain.

vodomira [7]

The kinetic energies of a light and a heavy body are equivalent. The momentum is greater for the light body.

<h3>What is momentum?</h3>

Momentum is characterized as the intensity of a body's motion. As momentum depends on both velocity and the direction of the body's motion, it is quantified by "mass velocity". Since velocity is a vector and mass is a scalar, momentum is a vector quantity.

As a result of its higher mass, a heavy object will move with more momentum. Only when the average speed of the heavy particles is lower than that of the light particles will the average kinetic energy of the light particles equal the average kinetic energy of the heavy particles.

At the same temperature and pressure, lighter gases will move more quickly than heavier ones. 0K on the Kelvin scale denotes that the particles are not moving.

To learn more about momentum refer to:

brainly.com/question/1042017

#SPJ4

5 0

2 years ago

How does the modern periodic table arrange elements?

Rus_ich [418]

Answer:

In the modern periodic table, the elements are arranged according to their atomic number - not their relative atomic mass . In the periodic table the elements are arranged into: rows, called periods , in order of increasing atomic number. vertical columns, called groups , where the elements have similar properties.

Explanation:

5 0

3 years ago

Read 2 more answers

By 1949 Americans who lived within the range of a television stations in the country could watch TV, vastly changing the way tha

fredd [130]

Answer: Microwaves.

Explanation: First, we have a trivial answer, and that is the visible light, which is responsible to let the information on the tv to be seen by the user.

Now, TV technology was possible thanks to the microwaves, that are used because these can carry more energy than other types, and these microwaves needed a special technology because they couldn't be handled by the current technology at the time.

5 0

4 years ago

Please HEEEEELPPPP !!!!!

stepladder [879]

When you rub a balloon on a sweater, for example, some electrons come off and end up on the balloon. The fibers have lost electrons giving them a positive charge. The rubber gained electrons giving it a negative charge. ... The positively charged fibers are now attracted to the negatively charged balloon.

5 0

3 years ago