MASS AND WIEGHT MEASUREMENT

Question 1

is a quantitative measure of inertia of a body at rest.

Answer 1

Mass

Question 2

is the force with which a body is
attracted toward the Earth

Answer 2

Weight

Question 3

is determined by the product of the mass and the acceleration of gravity

Answer 3

Weight force

Question 4

The embodiment of units of mass are called

Answer 4

weight

Question 5

In the International System of Units (SI), the modernized metric
measurement system, the unit for mass is called the ______ and the unit for force is
called the newton

Answer 5

kilogram, newton

Question 6

In the United States, the customary system the unit for mass is called
the ____ and the unit for force is called the pound

Answer 6

slug , pound

Question 7

This Ohaus brand platform balance is a triple beam poise carriage balance. This type of balance was patented
in

Answer 7

1932.

Question 8

This balance can
weigh objects up to 610 grams.

Answer 8

Platform Beam Balance

Question 9

This Ohaus balance was introduced on the market in 1957. It marked a milestone
in the history of this company by introducing a new system of counterweights. Instead of
moving the weights along the beam, i.e., the horizontal arm on which the pan is fixed,Ohaus introduced a dial system that was turned to stabilize the beam in a perfectly
horizontal position

Answer 9

Platform Dial Scale

Question 10

can measure weights up to 310 grams.

Answer 10

Platform Dial Scale

Question 11

It is based on a system of counterweights: the
object to be weighed is deposited on the pan and the
counterweight equilibrates the two ends of the
weighing arm

Answer 11

Toledo Balance

Question 12

This balance can weigh objects up to 2,500 grams

Answer 12

Toledo Balance

Question 13

This unit was acquired and used by researchers at the

Answer 13

Institut de
Microbiologie et d’Hygiène de l’Université de Montréal in
1964

Question 14

that can measure precisely very
small masses of substances – in the order of the milligram –
is essential to laboratory work, especially for chemical
analyses

Answer 14

analytic balance

Question 15

The mechanism is completely hidden in the back and
is thus protected from dust and shocks. The glass door on the
front opens and closes to allow the user to weigh the samples. Adjustable legs ensure that
the instrument is always level.

Answer 15

Analytic Balance

Question 16

It is an essential laboratory instrument
that can measure with great precision very small quantities of solid or liquid material.

Answer 16

Electronic Analtytic Balance

Question 17

Using the buttons on the front, the weight of the material in the pan can be determined up to four decimals smaller than unity (0.0001 gram)

Question 18

This rectangular box is a precision balance known as a ______ because its functioning
is based on the torsion of a metal wire.

Answer 18

“torsion balance”

Question 19

In physics, most notably, it
is used to measure weak forces (electric, magnetic,
and gravitational).

Answer 19

Dial Torsion Balance

Question 20

is a device for measuring
mass. It is often used to equilibrate, two by two,
solutions that will undergo centrifugation

Answer 20

Two-Pan Balance

Question 21

This
instrument must be installed on a flat stable surface.

Answer 21

Two-Pan Balance

Question 22

(OIML) meaning

Answer 22

International Organization of Legal Metrology

Question 23

sets guidelines and recommendations for weighing
instruments used in trade, ensuring global consistency.

Answer 23

International Organization
of Legal Metrology (OIML)

Question 24

This recommendation provides guidelines for the performance and
design of weighing instruments used in trade and commerce. It specifies
requirements for various types of weighing devices

Answer 24

OIML R 76:

Question 25

These require manual operation to weigh items.

Answer 25

Non-automatic Weighing Instruments (NAWI):

Question 26

These perform weighing automatically and include devices like digital scales.

Answer 26

Automatic Weighing Instruments (AWI):

Question 27

This recommendation covers the specifications for test and 32calibration equipment used to verify the accuracy of weighing instruments. It ensures that testing methods and equipment are standardized and reliable

Answer 27

OIML R 111:

Question 28

This standard deals with the specifications for test weights used in the calibration and verification of weighing instruments. It provides guidelines on the manufacturing and use of reference weights to ensure consistency and accuracy.

Answer 28

OIML R 60:

Question 29

For example, in the United States, the _________ manages regulations related to weighing instruments.

Answer 29

National Institute of Standards and Technology (NIST)