An apartment has 1 100 ft2 of floor space.What is the approximate volume of the apartment?

A) 102 ft3 B) 103 ft3 C) 104 ft3 D) 105 ft3 E) 106 ft3 A) 102 ft3 B) 103 ft3 C) 104 ft3 D) 105 ft3 E) 106 ft3

The mass of a star is 8.0 × 1030 kg,and the mass of a hydrogen atom is 1.67 × 10−27 kg.If we assume that the star is mostly composed of hydrogen,approximately how many atoms are there in the star?

A) 1.3E+4 atoms B) 2.1E-58 atoms C) 4.8E+57 atoms D) 8.0E+30 atoms A) 1.3E+4 atoms B) 2.1E-58 atoms C) 4.8E+57 atoms D) 8.0E+30 atoms

Modern electroplaters can cover a surface area of 75.0 m2 with one troy ounce of gold (volume = 1.611 cm3).What is the thickness of the electroplated gold?

A) 2.15E-8 m B) 1.07E-8 m C) 1.43E-8 m D) 4.30E-8 m E) None of the above A) 2.15E-8 m B) 1.07E-8 m C) 1.43E-8 m D) 4.30E-8 m E) None of the above

Exam 1: Units, Trigonometry, and Vectors

If point A is located at coordinates (-10,7)and point B is located at coordinates (8,-8),what is the distance from A to B if the units of the coordinated system are meters?

(Multiple Choice)

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Question 21

The speed of a boat is often given in knots.If a speed of 5 knots were expressed in the SI system of units,the units would be:

(Multiple Choice)

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Question 22

Vector Is 2 m long,and vector Is 5 m long.The length of the sum of the vectors must be

(Multiple Choice)

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Question 23

An apartment has 1 100 ft² of floor space.What is the approximate volume of the apartment?

(Multiple Choice)

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Question 24

A furlong is a distance of 220 yards.A fortnight is a time period of two weeks.A race horse is running at a speed of 6.00 yards per second.What is his speed in furlongs per fortnight?

(Multiple Choice)

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Question 25

Consider the cosine of any angle between 35° and 40°.If the angle were doubled,what would happen to the cosine of the angle.

(Multiple Choice)

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Question 26

Consider the sine of any angle between 30° and 40°.If the angle were doubled,what would happen to the sine of the angle?

(Multiple Choice)

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Question 27

Which one of the choices below represents the preferred practice regarding significant figures when adding the following: 15.9 + 14 + 77.68 + 6.898?

(Multiple Choice)

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Question 28

A mosquito flies diagonally from a corner at the floor of a rectangular room,with coordinates (0,0,0)to the opposite corner at the ceiling,with coordinates (5.5,3.75,h)m at a rate of 0.8 m/s.If it takes the mosquito 11 seconds to make the direct flight,what is h?

(Multiple Choice)

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Question 29

There are other ways of expressing uncertainty besides significant figures.For example,suppose a quantity is known to have a value between 20.4 and 20.0,and our best estimate of the value is midrange at 20.2.We could write the number as 20.2 +/− 0.2 and say that the number has a 1% uncertainty.We would also say it has 3 significant figures.If we square a number with 1% uncertainty and 3 significant figures,what results?

(Multiple Choice)

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Question 30

The mass of a star is 8.0 × 10³⁰ kg,and the mass of a hydrogen atom is 1.67 × 10−²⁷ kg.If we assume that the star is mostly composed of hydrogen,approximately how many atoms are there in the star?

(Multiple Choice)

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Question 31

A student adds two vectors with magnitudes of 200 and 70.Which one of the following is the only possible choice for the magnitude of their sum?

(Multiple Choice)

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Question 32

Vector Is 3.0 units in length and points along the positive x axis;vector Is 5.0 units in length and points along a direction 150° from the positive x axis.What is the magnitude of the resulting vector when vectors And Are added?

(Multiple Choice)

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Question 33

Modern electroplaters can cover a surface area of 75.0 m² with one troy ounce of gold (volume = 1.611 cm³).What is the thickness of the electroplated gold?

(Multiple Choice)

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Question 34

The distance to a hypothetical galaxy is estimated at about 7 × 10⁶ light years.A light year is the distance traveled by light in one year;if the speed of light is 3 × 10⁸ m/s,about how far is it from our galaxy to this hypothetical galaxy? (1 year = 3.15 × 10⁷ s)

(Multiple Choice)

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Question 35

A city uses 6.8 × 10⁹ gallons of water every day.How many gallons per minute must be pumped from the reservoir to meet the city's water needs?

(Multiple Choice)

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Question 36

A circle has an area of 3.0 m².A second circle has double the radius of the first.The area of the second circle is ____ times that of the first.

(Multiple Choice)

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Question 37

Which expression is dimensionally consistent with an expression that would yield a value for time−¹? (v is velocity,x is distance,and t is time)

(Multiple Choice)

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Question 38

Vector Points north,and vector Points east.If = − ,then vector Points

(Multiple Choice)

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Question 39

Which formula is dimensionally consistent with an expression yielding a value for velocity? (a is acceleration,x is distance,and t is time)

(Multiple Choice)

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Question 40

Showing 21 - 40 of 100

Exam 1: Units, Trigonometry, and Vectors

If point A is located at coordinates (-10,7)and point B is located at coordinates (8,-8),what is the distance from A to B if the units of the coordinated system are meters?

The speed of a boat is often given in knots.If a speed of 5 knots were expressed in the SI system of units,the units would be:

Vector Is 2 m long,and vector Is 5 m long.The length of the sum of the vectors must be ​

An apartment has 1 100 ft2 of floor space.What is the approximate volume of the apartment?

A furlong is a distance of 220 yards.A fortnight is a time period of two weeks.A race horse is running at a speed of 6.00 yards per second.What is his speed in furlongs per fortnight?​

Consider the cosine of any angle between 35° and 40°.If the angle were doubled,what would happen to the cosine of the angle.

Consider the sine of any angle between 30° and 40°.If the angle were doubled,what would happen to the sine of the angle?

Which one of the choices below represents the preferred practice regarding significant figures when adding the following: 15.9 + 14 + 77.68 + 6.898?

A mosquito flies diagonally from a corner at the floor of a rectangular room,with coordinates (0,0,0)to the opposite corner at the ceiling,with coordinates (5.5,3.75,h)m at a rate of 0.8 m/s.If it takes the mosquito 11 seconds to make the direct flight,what is h? ​

The mass of a star is 8.0 × 1030 kg,and the mass of a hydrogen atom is 1.67 × 10−27 kg.If we assume that the star is mostly composed of hydrogen,approximately how many atoms are there in the star?

A student adds two vectors with magnitudes of 200 and 70.Which one of the following is the only possible choice for the magnitude of their sum?

Vector Is 3.0 units in length and points along the positive x axis;vector Is 5.0 units in length and points along a direction 150° from the positive x axis.What is the magnitude of the resulting vector when vectors And Are added?

Modern electroplaters can cover a surface area of 75.0 m2 with one troy ounce of gold (volume = 1.611 cm3).What is the thickness of the electroplated gold?

The distance to a hypothetical galaxy is estimated at about 7 × 106 light years.A light year is the distance traveled by light in one year;if the speed of light is 3 × 108 m/s,about how far is it from our galaxy to this hypothetical galaxy? (1 year = 3.15 × 107 s)

A city uses 6.8 × 109 gallons​ of water every day.How many gallons per minute must be pumped from the reservoir to meet the city's water needs?

A circle has an area of 3.0 m2.A second circle has double the radius of the first.The area of the second circle is ____ times that of the first.

Which expression is dimensionally consistent with an expression that would yield a value for time−1? (v is velocity,x is distance,and t is time)

Vector Points north,and vector Points east.If = − ,then vector Points

Which formula is dimensionally consistent with an expression yielding a value for velocity? (a is acceleration,x is distance,and t is time)

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Vector Is 2 m long,and vector Is 5 m long.The length of the sum of the vectors must be

An apartment has 1 100 ft² of floor space.What is the approximate volume of the apartment?

A furlong is a distance of 220 yards.A fortnight is a time period of two weeks.A race horse is running at a speed of 6.00 yards per second.What is his speed in furlongs per fortnight?

A mosquito flies diagonally from a corner at the floor of a rectangular room,with coordinates (0,0,0)to the opposite corner at the ceiling,with coordinates (5.5,3.75,h)m at a rate of 0.8 m/s.If it takes the mosquito 11 seconds to make the direct flight,what is h?

The mass of a star is 8.0 × 10³⁰ kg,and the mass of a hydrogen atom is 1.67 × 10−²⁷ kg.If we assume that the star is mostly composed of hydrogen,approximately how many atoms are there in the star?

Modern electroplaters can cover a surface area of 75.0 m² with one troy ounce of gold (volume = 1.611 cm³).What is the thickness of the electroplated gold?

The distance to a hypothetical galaxy is estimated at about 7 × 10⁶ light years.A light year is the distance traveled by light in one year;if the speed of light is 3 × 10⁸ m/s,about how far is it from our galaxy to this hypothetical galaxy? (1 year = 3.15 × 10⁷ s)

A city uses 6.8 × 10⁹ gallons of water every day.How many gallons per minute must be pumped from the reservoir to meet the city's water needs?

A circle has an area of 3.0 m².A second circle has double the radius of the first.The area of the second circle is ____ times that of the first.

Which expression is dimensionally consistent with an expression that would yield a value for time−¹? (v is velocity,x is distance,and t is time)