Presentation is loading. Please wait.

Presentation is loading. Please wait.

If the displacement of an object, x, is related to velocity, v, according to the relation x = Av, the constant, A, has the dimension of which of the following?

Similar presentations


Presentation on theme: "If the displacement of an object, x, is related to velocity, v, according to the relation x = Av, the constant, A, has the dimension of which of the following?"— Presentation transcript:

1 If the displacement of an object, x, is related to velocity, v, according to the relation x = Av, the constant, A, has the dimension of which of the following? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.acceleration 2.length 3.time 4.area

2 A crate has the dimensions of 1.0 m x 1.2 m x 0.80 m. If there are 3.28 feet per meter then what is the volume of the crate in cubic feet? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.34 cubic feet 2.10 cubic feet 3.68 cubic feet 4.3 cubic feet

3 If a jet airplane climbs at an angle of 15 with respect to the horizontal and follows a straight-line path for a distance of 400 m, how much altitude does it gain? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.103 m 2.390 m 3.141 m 4.200 m

4 The distance to the Andromeda Galaxy is estimated at about 2 x 10 6 light years. A light year is the distance traveled by light in one year; if the speed of light is 3 x 10 8 m/s, about how far is it from our galaxy to Andromeda? (1 year = 3.15 x 10 7 s) 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.10 x 10 15 m 2.1 x 10 18 m 3.1.9 x 10 22 m 4.6 x 10 12 m

5 A furlong is a distance equal to 220 yards. A fortnight is a time period of 2 weeks. If a race horse is running at a speed of 5 yards per second, what is its speed as measured in furlongs per fortnight? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.27,491 furlongs/fortnight 2.13,674 furlongs/fortnight 3.6,221 furlongs/fortnight 4.2,749 furlongs/fortnight

6 Mass, along with what other two quantities, make up the three basic quantities in mechanics used by physicists to derive additional quantities? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.length and force 2.power and force 3.length and time 4.force and time

7 Note the following mathematical expression: y = x 2. Which one of the statements below is most consistent with this expression? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.if y doubles, then x quadruples 2.y is greater than x 3.if x doubles, then y doubles 4.if x doubles, then y quadruples

8 Which of the following formulas is dimensionally consistent with an expression which would yield a value for time -1 (v is velocity, x is distance, and t is time)? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.v/x 2.v 2 /x 3.x/t 4.V 2 t

9 Note the following expression: y = A/x 3. Which one of the statements below is most consistent with the above expression? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.y is less than A 2.if x is halved, y is multiplied by eight 3.if x is doubled, y is multiplied by a factor of 8 4.y is greater than x

10 On planet N, the standard unit of length is the nose. If a 6.1 foot height astronaut travels to planet N and is measured to have a height of 94 noses, what would be the height in feet of his partner who measures 76 noses? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.4.9 feet 2.7.5 feet 3.5.3 feet 4.5.8 feet

11 Since 1983 the standard meter has been defined in terms of which of the following? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.specific alloy bar housed at Sevres, France 2.wavelength of light emitted by krypton-86 3.distance from the Earth's equator to the north pole 4.the distance light travels in 1/(3 x 10 8 ) second

12 Which of the following formulas is dimensionally consistent with an expression yielding a value for acceleration (v is velocity, x is distance, and t is time)? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.v/t 2 2.v/x 2 3.v 2 /t 4.v 2 /x

13 Since 1967 the standard definition for the second of time has been based on which of the following? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.characteristic frequency of the cesium-133 atom 2.average solar day 3.sidereal day 4.Greenwich Civil Time

14 On planet Q the standard unit of volume is called the guppy. Space travelers from Earth have determined that one liter = 38.2 guppies. If so, how many guppies are contained in 150 liters? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.5730 guppies 2.0.255 guppies 3.3.93 guppies 4.188 guppies

15 Assume that on average everyone in the United States consumes one soft drink in an aluminum can every two days. If there are 270 million Americans, how many tons of aluminum need to be recycled each year if each can weighs 1/16 pound and one ton = 2000 pounds? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.750,000 tons 2.1.5 million tons 3.1.75 million tons 4.3 million tons

16 Army engineers in 1946 determined the distance from the Earth to the moon by using radar. If the time from which a signal was sent out from their radar to the time at which it was received back was 2.56 s, what is the distance from the Earth to the moon? (The speed of radar waves is 3 x 10 8 m/s). 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.240,000 km 2.384,000 km 3.480,000 km 4.768,000 km

17 The mass of the sun is 2 x 10 30 kg, and the mass of a hydrogen atom, of which the sun is mostly composed, is 1.67 x 10 -27 kg. How many atoms are there in the sun? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.1.2 x 10 56 atoms 2.3.4 x 10 56 atoms 3.1.2 x 10 57 atoms 4.2.4 x 10 57 atoms

18 The basic function of the carburetor of an automobile is to atomize the gasoline and mix it with air to promote rapid combustion. As an example, assume that 30 cm 3 of gasoline is atomized into N spherical droplets, each with a radius of 2.0 x 10 -5 m. What is the total surface area of these N spherical droplets? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2,140 cm 2 2.10,140 cm 2 3.21,400 cm 2 4.44,770 cm 2

19 Which point is nearest the y-axis? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.(3,4) 2.(4,3) 3.(-5,2) 4.(-2,-5)

20 Modern electroplaters can cover a surface area of 60 m 2 with one troy ounce of gold (volume = 1.611 cm 3 ). What is the thickness of the electroplated gold? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2.68 x 10 -8 m 2.1.34 x 10 -9 m 3.1.67 x 10 -6 m 4.3.33 x 10 -7 m

21 A high fountain of water is in the center of a circular pool of water. If you walk around the circumference of the pool, it is a distance of 150 meters. If now, standing at the edge of the pool, you use a protractor to gauge the angle of elevation of the top of the fountain, it is 55°. How high is the fountain? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.17 m 2.23 m 3.29 m 4.34 m

22 Water flows into a swimming pool at the rate of 8 gallons/minute. If the pool dimensions are 16 ft wide, 32 ft long and 8 ft deep, how long does it take to fill the pool? (1 U.S. gallon = 231 cubic inches) 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.32 hours 2.64 hours 3.48 hours 4.24 hours

23 Which one of the choices below represents the preferred practice regarding significant figures when multiplying the following: 10.5 x 8.8 x 3.14? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.290 2.290.136 3.290.1 4.300

24 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 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.m 2.s 3.m/s 4.kg/s

25 For which of the values below is x > x 3 ? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.x = -0.5 2.x = 0.5 3.x = 1.0 4.x = 1.5

26 If a is acceleration, v is velocity, x is position, and t is time, then which equation is not dimensionally correct? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.t = x/v 2.a = v 2 /x 3.v = a/t 4.t 2 = 2x/a

27 A cement truck can pour 20 cubic yards of cement per hour. Express this in ft 3 /min. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.1/3 ft 3 /min 2.1.0 ft 3 /min 3.3 ft 3 /min 4.9 ft 3 /min

28 Which one of the choices below represents the preferred practice regarding significant figures when adding the following: 21.4 + 15 + 17.17 + 4.003? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.57.573 2.57.57 3.57.6 4.58

29 Calculate (0.82 + 0.042) x (4.4 x 10 -3 ), keeping only significant figures. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.3800 2.3784 3.3792 4.3520


Download ppt "If the displacement of an object, x, is related to velocity, v, according to the relation x = Av, the constant, A, has the dimension of which of the following?"

Similar presentations


Ads by Google