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mir
Questions and answers by
mir
, page 3
Questions (269)
What is the first step a programmer takes in creating software?
testing the program for bugs writing the instructions for the
1 answer
98 views
How does an AC generator compare to an electric motor?
Electric motors power AC generators. They are the same. They use different
1 answer
89 views
In the periodic table, where are the most reactive metals found?
In Periods 6 and 7 at the bottom. In Group 1, the first column
1 answer
68 views
What is the temperature at which a solid melts?
a physical property a chemical change a physical change a chemical property
1 answer
73 views
Nonmetals are generally _____.
not common elements on the left side of the periodic table good conductors of electricity poor
1 answer
109 views
Which hard drive would store the most information?
4 gigabytes 4 kilobytes 2 terabytes 6 nanobytes
1 answer
93 views
How can the solubility of a solution be increased?
By increasing the temperature. By decreasing the amount of solvent added. By
1 answer
94 views
The arrangement of carbon atoms in _____ resembles the pattern on a soccer ball.
a fullerene graphite a nanotube a pencil
1 answer
73 views
What is Newton’s second law of motion?
Force equals mass divided by acceleration. Acceleration equals force divided by mass.
1 answer
107 views
Use the diagram to answer the question .
What type of reaction is occurring in the candle above? Only an exothermic reaction.
1 answer
130 views
What type of device is a battery?
a voltage source a motor a magnet an electric circuit
3 answers
106 views
What is required to change water from a liquid to a gas?
the addition of energy a reduction of the volume of the sample a
1 answer
87 views
What are the fewest number of reactants a chemical equation can have?
two zero one four
1 answer
78 views
The opposite of vaporization is _____.
evaporation freezing condensation sublimation
3 answers
99 views
Which of these is easy to separate into its different parts?
atom molecule compound mixture
1 answer
88 views
Why is the International System of Units (SI) used by scientists all over the world?
It was developed in the United States. It is
1 answer
107 views
Which is larger than a single atom?
electron proton magnetic domain neutron cloud
1 answer
84 views
Magnesium bromide is an ionic compound with the chemical formula MgBr 2 . What does the “2” indicate?
There are two magnesium
1 answer
120 views
What is shown in the figure above?
a single magnetic field between opposite poles a combined magnetic field between like poles a
1 answer
89 views
Use the diagram to answer the question .
What physical process is reduced by the device shown? conduction insulation radiation
1 answer
85 views
All of the halogens are _____ to humans.
poorly reactive, but dangerous poorly reactive and not dangerous very reactive, but not
1 answer
101 views
Every atom of an element has the same _____.
weight mass number of protons number of neutrons
1 answer
78 views
H 2 O, CO 2 , and C 12 H 22 O 11 are all examples of chemical _____.
formulas bonds changes properties
1 answer
62 views
Magnets have two poles. What is true about these poles?
The magnetic force is weakest at the south pole. The opposite poles on
1 answer
135 views
What characteristic do photosynthesis and combustion share?
They both are endothermic. They both start with chemical energy. They
1 answer
99 views
What is the total potential and kinetic energy of the particles in an object?
its mechanical energy its thermal energy its
3 answers
121 views
Because TVs require more voltage than is found in normal household current, what is built into them?
secondary generators step-up
1 answer
145 views
When are larger atoms least likely to be reactive?
When they have no valence electrons. When they have 2 valence electrons. When
1 answer
97 views
What is electromagnetism?
the combination of batteries with magnets the relationship between electricity and magnetism a type of
1 answer
84 views
Which could be considered an inclined plane wrapped around a cylinder?
lever wheel and axle pulley screw
1 answer
92 views
Which part of a solution has been dissolved by the solvent?
solute mixture precipitate colloid
1 answer
96 views
Use the diagram to answer the question .
Energy of Two Reactions In the diagram above, which reaction is an endothermic reaction?
1 answer
88 views
How are first-class levers different from third-class levers?
First-class levers do not change the direction of the force.
1 answer
117 views
When did Democritus propose the idea of atoms?
after 1900 A.D. about 430 B.C. about 430 A.D. before 500 B.C.
1 answer
82 views
A varying electric current that represents information is called a(n) _____.
electronic signal integrated circuit electromagnetic
1 answer
92 views
The surface of water can act like a sort of skin due to a property of liquids called _____.
surface tension condensation
1 answer
100 views
If one knows how fast work is done, what can one calculate?
energy distance power force
1 answer
88 views
In general, metals _____.
are stored in sealed containers for safety are highly reactive substances show a wide range of chemical
1 answer
81 views
Use the diagram to answer the question .
Which statement describes the energy at letter E in the diagram above? Kinetic energy is
1 answer
136 views
Which of these properties describes a diode?
able to change alternating current into direct current able to switch an electric
3 answers
149 views
Which is an advantage of machines?
They increase the amount of work that is done. They decrease the distance over which one
1 answer
77 views
What does Grady predict these changes will bring to improve the South?
1 answer
80 views
Does the farmer believe that the New South is working to improve his life?
1 answer
63 views
What is the moral of the story that Booker T. Washington tells the audience in his speech?
1 answer
95 views
From the illustrator’s point of view, what economic changes have occurred between 1861 and
1882?
1 answer
93 views
What social changes have occurred during this period?
1 answer
72 views
illustration of harpers weekly magazine What social changes have occurred during this period?
1 answer
67 views
which transformation carries the parallelogram onto itsself
1 answer
56 views
Compare the economic hardships of the Great Depression with today’s economical struggles
1 answer
82 views
if a1=6 and an=an-1-5 find the value of a5
2 answers
33 views
if a1=10 and an = an-1+1 then find the value of a5
2 answers
27 views
if a1=3 and an = an-1 + 2 then find the value of a5
2 answers
38 views
if a1 =5 an an =5an-1 then whats the value of a4
2 answers
46 views
write a rescursive formula for an, the nth term of the sequence 1,-6,-13,-20
2 answers
38 views
write a rescursive formula for an, the nth term of the sequence 1,-6,-13,-20 a1= an=
2 answers
37 views
write a recursive formula for an, the nth term of the sequence 20,25,30,35 a1= an=
2 answers
57 views
write a recursive formula for an the nth term of the sequence 15,17,19,21 a1= an=
2 answers
95 views
write a recursive formula for an the nth term of the sequence 5,3,1,-1 a1= an=
2 answers
52 views
write a recursive formula for an the nth term of the sequence 5,3,1,-1
2 answers
49 views
year round precipitation biome
2 answers
44 views
seasonal precipitation biome
2 answers
41 views
low precipitation biome
2 answers
64 views
nutrient rich soil
2 answers
45 views
nutrient rich soil biome
2 answers
54 views
warm year round biome
2 answers
44 views
warm summrs cool winters biome
2 answers
40 views
cold year round biome
2 answers
51 views
nutrient poor soil biome
2 answers
41 views
the gases in the atmosphere tht trap heat produce
2 answers
39 views
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