Physics 2Nd 9 Weeks*

Front 1

1.) In physics, work is defined as..

Back 1

e. force times distance.

Front 2

2.) The unit of work is the..

Back 2

c. joule.

Front 3

3.) Power is defined as the..

Back 3

c. work done on an object divided by the time taken to do the work.

Front 4

4.) The unit of power is the..

Back 4

e. watt.

Front 5

5.) Potential energy is the energy an object has because of its..

Back 5

c. location.

Front 6

6.) The amount of potential energy possessed by an elevated object is equal to..

Back 6

d. the work done in lifting it.

Front 7

7.) Kinetic energy of an object is equal to..

Back 7

b. one half the product of its mass times its speed squared.

Front 8

8.) How many joules of work are done on a box when a force of 25-N pushes it 3m?

Back 8

e. 75-J

Front 9

9.) How much power is required to do 40-J of work on an object in 5 seconds?

Back 9

c. 8-W

Front 10

10.) How much work is done on a 60-N box of books that you carry horizontally across a 6-m room?

Back 10

e. 360-J

Front 11

11.) How much power is expended if you lift a 60-N crate 10 meters in 1 second?

Back 11

e. 600-W

Front 12

12.) Mechanical energy can be in the form of..

Back 12

c. both kinetic and potential energy.

Front 13

13.) Protons, neutrons, and electrons combine to form..

Back 13

d. atoms.

Front 14

14.) At the center of every atom is a mass-filled region called the..

Back 14

b. nucleus.

Front 15

15.) There are slightly more than 100 known atoms that combine to form all living and nonliving matter that we know about. These are called..

Back 15

e. elements.

Front 16

16.) What is the most abundant element in the known universe?

Back 16

c. Hydrogen.

Front 17

17.) Nearly all the elements heavier than hydrogen that occur today were created..

Back 17

a. in the deep interior of stars.

Front 18

18.) Atoms combine together to form..

Back 18

d. molecules.

Front 19

19.) How many different elements are in a water molecule?

Back 19

c. two.

Front 20

20.) What makes an element distinct?

Back 20

c. the number of protons.

Front 21

21.) Brownian motion has to do with..

Back 21

d. random motions of atoms and molecules.

Front 22

22.) Which is the smallest particle of those listed below?

Back 22

a. a proton.

Front 23

23.) When a nucleon is electrically neutral, it is called..

Back 23

a. a neutron.

Front 24

24.) Newton had the insight to see that the..

Back 24

c. ..force on the moon has the same nature as the force on an apple.

Front 25

25.) The unit of work is called the joule.
-TorF?

Back 25

True.

Front 26

26.) The rate at which work is done is called energy.
-TorF?

Back 26

False; it's called POWER.

Front 27

27.) The unit of power is the watt.
-TorF?

Back 27

True.

Front 28

28.) The rate at which work is done is called power.
-TorF?

Back 28

True.

Front 29

29.) The energy an object has by virtue of its location is its potential energy.
-TorF?

Back 29

True.

Front 30

30.) The energy an object has by virtue of its motion is its kinetic energy.
-TorF?

Back 30

True.

Front 31

31.) Electrons, protons, & neutrons combine to form atoms, which can be considered the building blocks of all matter.
-TorF?

Back 31

True.

Front 32

32.) A compound is a substance made from atoms of different elements that are combined in a fixed proportion.
-TorF?

Back 32

True.

Front 33

33.) Atoms are mostly empty space. However, at the center of an atom is a mass-filled region called the nucleus.
-TorF?

Back 33

True.

Front 34

34.) A nucleus contains particles that are generally classified as electrons.
-TorF?

Back 34

False; classified as protons & neutrons.

Front 35

35.) A nucleon can be either a neutron or a proton..
-TorF?

Back 35

True.

Front 36

36.) A periodic table is a chart that lists all the elements by their atomic number and their electron arrangement.
-TorF?

Back 36

True.

Front 37

37.) Matter is commonly found in three phases. These phases are solid, liquid, & gaseous.
-TorF?

Back 37

True.

Front 38

38.) There is a fourth phrase, called a plasma, that is not so commonly found in our everyday world, yet it is the predominant phase of the matter in the universe.
-TorF?

Back 38

True.

Front 39

36.) A periodic table is a chart that lists all the elements by their atomic number and their electron arrangement.
-TorF?

Back 39

True.

Front 40

37.) Matter is commonly found in three phases. These phases are solid, liquid, & gaseous.
-TorF?

Back 40

True.

Front 41

38.) There is a fourth phrase, called a plasma, that is not so commonly found in our everyday world, yet it is the predominant phase of the matter in the universe.
-TorF?

Back 41

True.

Front 42

39.) Most matter is made of empty space.
-TorF?

Back 42

True.