1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anna11 [10]
2 years ago
12

What are significant figures?

Physics
2 answers:
vekshin12 years ago
8 0
“The term significant figures refers to the number of important single digits (0 through 9 inclusive) in the coefficient of an expression in scientific notation . The number of significant figures in an expression indicates the confidence or precision with which an engineer or scientist states a quantity.”
11Alexandr11 [23.1K]2 years ago
4 0
You can check this out for further understanding

You might be interested in
What is the basic building block of all matter
Natalka [10]
I think that is atom. 
7 0
3 years ago
Read 2 more answers
Isotopes of the same element vary in the number of ____ present in the nucleus A.neutrons
I am Lyosha [343]
A. Neutrons.
If it were electrons, it would be an ion.
If it were protons, it wouldn't be the same element.
5 0
3 years ago
Read 2 more answers
What two forces act on a falling object ?
goldenfox [79]

Answer:

The two forces acting on the object are weight due to gravity pulling the object towards earth, and drag resisting this motion. When the object is first released, drag is small as velocity is low, so the resultant force is down. This means the object accelerates towards earth.

5 0
3 years ago
Westinghouse and Edison fought what was known as the war of the currents. Eventually, Westinghouse triumped using Alternating Cu
DerKrebs [107]
The answer is B! :) Hope it helped
6 0
3 years ago
Read 2 more answers
55. Write the shortened notation for the ion symbol next to each element given below. A.) Calcium loses 2 negative electronsB.)
Eddi Din [679]

We are asked to write shortened notation for the ion symbol next to each element given below.

Convention:

First of all, write the shortened notation of the element.

The superscript (at the top) is the number of charges on the ion and also a + sign for a positive ion and - sign for a negative ion.

When an atom loses an electron then the charge is positive (+).

When an atom gains an electron then the charge is negative (-)

A.) Calcium loses 2 negative electrons

Since it loses 2 electrons it will have 2+ superscript.

Calcium has an atomic number of 20 (the number of protons)

_{20}Ca^{2+}

B.) Chlorine gains 1 negative electron

Since it gains 1 electron it will have - superscript (we don't write 1 when the charge is 1)

Chlorine has an atomic number of 17 (the number of protons)

_{17}Cl^-

C.) Hydrogen gains 1 negative electron

Since it gains 1 electron it will have - superscript

Hydrogen has an atomic number of 1 (the number of protons)

_1H^-

6 0
1 year ago
Other questions:
  • An electric dipole generates an electric field in the space around it what do all of the electric field lines have in common?
    15·1 answer
  • Can you correctly identify facts about these two historical models of the solar system?
    9·1 answer
  • A published hypothesis:
    13·1 answer
  • A car with a constant velocity of 22 m/s is driven for 6.8 s. How far did it travel? (V =A d/AT)
    10·1 answer
  • Displacement vectors of 4 km north, 2 km south, 5 km north, and 5 km south combine to a total displacement of
    10·1 answer
  • "A uniform cylinder of mass M and radius R is rolling without slipping. The velocity of its center of mass is v. What is the cyl
    7·1 answer
  • In 1911, Ernest Rutherford and his assistants Geiger and Marsden conducted an experiment in which they scattered alpha particles
    6·1 answer
  • Which are base units used in the metric system? Check all that apply.
    15·2 answers
  • The famous cliff divers of Acapulco leap from a perch 35 m above the ocean. How fast are they moving when they reach the surface
    11·1 answer
  • A few alpha particles bounce off a thin sheet of gold foil. What did scientists
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!