Exam 1: Units,physical Quantities,and Vectors

arrow
  • Select Tags
search iconSearch Question
flashcardsStudy Flashcards
  • Select Tags

As shown in the figure,three force vectors act on an object.The magnitudes of the forces as shown in the figure are As shown in the figure,three force vectors act on an object.The magnitudes of the forces as shown in the figure are   = 80.0 N,   = 60.0 N,and   = 40.0 N,where N is the standard SI unit of force.The resultant force acting on the object is given by  = 80.0 N, As shown in the figure,three force vectors act on an object.The magnitudes of the forces as shown in the figure are   = 80.0 N,   = 60.0 N,and   = 40.0 N,where N is the standard SI unit of force.The resultant force acting on the object is given by  = 60.0 N,and As shown in the figure,three force vectors act on an object.The magnitudes of the forces as shown in the figure are   = 80.0 N,   = 60.0 N,and   = 40.0 N,where N is the standard SI unit of force.The resultant force acting on the object is given by  = 40.0 N,where N is the standard SI unit of force.The resultant force acting on the object is given by As shown in the figure,three force vectors act on an object.The magnitudes of the forces as shown in the figure are   = 80.0 N,   = 60.0 N,and   = 40.0 N,where N is the standard SI unit of force.The resultant force acting on the object is given by

Free
(Multiple Choice)
4.8/5
(30)
Correct Answer:
Verified

D

What is the angle between the vector What is the angle between the vector   = +3   - 2   - 3   and the +y-axis? = +3 What is the angle between the vector   = +3   - 2   - 3   and the +y-axis? - 2 What is the angle between the vector   = +3   - 2   - 3   and the +y-axis? - 3 What is the angle between the vector   = +3   - 2   - 3   and the +y-axis? and the +y-axis?

Free
(Multiple Choice)
4.8/5
(36)
Correct Answer:
Verified

A

A plot of land contains A plot of land contains   How many square meters does it contain?  How many square meters does it contain? A plot of land contains   How many square meters does it contain?

Free
(Multiple Choice)
4.9/5
(29)
Correct Answer:
Verified

A

For the vectors shown in the figure,find the magnitude and direction of the vector product For the vectors shown in the figure,find the magnitude and direction of the vector product   ,assuming that the quantities shown are accurate to two significant figure.  ,assuming that the quantities shown are accurate to two significant figure. For the vectors shown in the figure,find the magnitude and direction of the vector product   ,assuming that the quantities shown are accurate to two significant figure.

(Multiple Choice)
4.9/5
(37)

Scientists use the metric system chiefly because it is more accurate than the English system.

(True/False)
4.7/5
(33)

If If   = -2   - 6   + 2   and   = -2   -2   - 3   ,which of the following numbers is closest to the magnitude of   ×   ? = -2 If   = -2   - 6   + 2   and   = -2   -2   - 3   ,which of the following numbers is closest to the magnitude of   ×   ? - 6 If   = -2   - 6   + 2   and   = -2   -2   - 3   ,which of the following numbers is closest to the magnitude of   ×   ? + 2 If   = -2   - 6   + 2   and   = -2   -2   - 3   ,which of the following numbers is closest to the magnitude of   ×   ? and If   = -2   - 6   + 2   and   = -2   -2   - 3   ,which of the following numbers is closest to the magnitude of   ×   ? = -2 If   = -2   - 6   + 2   and   = -2   -2   - 3   ,which of the following numbers is closest to the magnitude of   ×   ? -2 If   = -2   - 6   + 2   and   = -2   -2   - 3   ,which of the following numbers is closest to the magnitude of   ×   ? - 3 If   = -2   - 6   + 2   and   = -2   -2   - 3   ,which of the following numbers is closest to the magnitude of   ×   ? ,which of the following numbers is closest to the magnitude of If   = -2   - 6   + 2   and   = -2   -2   - 3   ,which of the following numbers is closest to the magnitude of   ×   ? × If   = -2   - 6   + 2   and   = -2   -2   - 3   ,which of the following numbers is closest to the magnitude of   ×   ? ?

(Multiple Choice)
4.8/5
(36)

If If   and   are nonzero vectors for which   ∙   = 0,it must follow that and If   and   are nonzero vectors for which   ∙   = 0,it must follow that are nonzero vectors for which If   and   are nonzero vectors for which   ∙   = 0,it must follow thatIf   and   are nonzero vectors for which   ∙   = 0,it must follow that = 0,it must follow that

(Multiple Choice)
4.7/5
(35)

For the vectors shown in the figure,express vector For the vectors shown in the figure,express vector   in terms of vectors   and   .  in terms of vectors For the vectors shown in the figure,express vector   in terms of vectors   and   .  and For the vectors shown in the figure,express vector   in terms of vectors   and   .  . For the vectors shown in the figure,express vector   in terms of vectors   and   .

(Short Answer)
4.9/5
(31)

A rabbit trying to escape a fox runs north for 8.0 m,darts northwest for 1.0 m,then drops A rabbit trying to escape a fox runs north for 8.0 m,darts northwest for 1.0 m,then drops   down a hole into its burrow.What is the magnitude of the net displacement of the rabbit? down a hole into its burrow.What is the magnitude of the net displacement of the rabbit?

(Multiple Choice)
4.7/5
(43)

Estimate the number of times the earth will rotate on its axis during a human's lifetime.

(Multiple Choice)
4.8/5
(40)

The mass of a typical adult woman is closest to

(Multiple Choice)
4.8/5
(31)

Determine the angle between the directions of vector Determine the angle between the directions of vector   = 3.00   + 1.00   and vector   . = 3.00 Determine the angle between the directions of vector   = 3.00   + 1.00   and vector   . + 1.00 Determine the angle between the directions of vector   = 3.00   + 1.00   and vector   . and vector Determine the angle between the directions of vector   = 3.00   + 1.00   and vector   . .

(Multiple Choice)
4.8/5
(36)

A marathon is A marathon is   and   long.Estimate how many strides would be required to run a marathon.Assume a reasonable value for the average number of  and A marathon is   and   long.Estimate how many strides would be required to run a marathon.Assume a reasonable value for the average number of  long.Estimate how many strides would be required to run a marathon.Assume a reasonable value for the average number of A marathon is   and   long.Estimate how many strides would be required to run a marathon.Assume a reasonable value for the average number of

(Multiple Choice)
4.9/5
(29)

What is 56 + (32.00)/(1.2465 + 3.45)written with the correct number of significant figures?

(Multiple Choice)
4.9/5
(38)

The components of vector The components of vector   are   = -3.5 and   = -9.7,and the components of vector   are   = -6 and   = +8.1.What is the angle (less than 180 degrees)between vectors   and   ? are The components of vector   are   = -3.5 and   = -9.7,and the components of vector   are   = -6 and   = +8.1.What is the angle (less than 180 degrees)between vectors   and   ? = -3.5 and The components of vector   are   = -3.5 and   = -9.7,and the components of vector   are   = -6 and   = +8.1.What is the angle (less than 180 degrees)between vectors   and   ? = -9.7,and the components of vector The components of vector   are   = -3.5 and   = -9.7,and the components of vector   are   = -6 and   = +8.1.What is the angle (less than 180 degrees)between vectors   and   ? are The components of vector   are   = -3.5 and   = -9.7,and the components of vector   are   = -6 and   = +8.1.What is the angle (less than 180 degrees)between vectors   and   ? = -6 and The components of vector   are   = -3.5 and   = -9.7,and the components of vector   are   = -6 and   = +8.1.What is the angle (less than 180 degrees)between vectors   and   ? = +8.1.What is the angle (less than 180 degrees)between vectors The components of vector   are   = -3.5 and   = -9.7,and the components of vector   are   = -6 and   = +8.1.What is the angle (less than 180 degrees)between vectors   and   ? and The components of vector   are   = -3.5 and   = -9.7,and the components of vector   are   = -6 and   = +8.1.What is the angle (less than 180 degrees)between vectors   and   ? ?

(Multiple Choice)
4.8/5
(39)

If If   = -4   - 2   - 3   ,what is   ×   ? = -4 If   = -4   - 2   - 3   ,what is   ×   ? - 2 If   = -4   - 2   - 3   ,what is   ×   ? - 3 If   = -4   - 2   - 3   ,what is   ×   ? ,what is If   = -4   - 2   - 3   ,what is   ×   ? × If   = -4   - 2   - 3   ,what is   ×   ? ?

(Multiple Choice)
4.7/5
(38)

Write out the number 7.35 × 10-5 in full with a decimal point and correct number of zeros.

(Multiple Choice)
4.7/5
(32)

The height of the ceiling in a typical home,apartment,or dorm room is closest to

(Multiple Choice)
4.7/5
(29)

Albert uses as his unit of length (for walking to visit his neighbors or plowing his fields)the albert (A),the distance Albert can throw a small rock.One albert is Albert uses as his unit of length (for walking to visit his neighbors or plowing his fields)the albert (A),the distance Albert can throw a small rock.One albert is   How many square alberts are equal to one acre? (1 acre = 43,560 ft<sup>2</sup> = 4050 m<sup>2</sup>) How many square alberts are equal to one acre? (1 acre = 43,560 ft2 = 4050 m2)

(Short Answer)
4.9/5
(36)

Which of the following is an accurate statement?

(Multiple Choice)
4.9/5
(27)
Showing 1 - 20 of 107
close modal

Filters

  • Essay(0)
  • Multiple Choice(0)
  • Short Answer(0)
  • True False(0)
  • Matching(0)