Engineering

Q: Which has more influence on a moving object's momentum? a. the object's mass b. the object's velocity c. both mass and velocity d. none of the above

Q: What does L stand for in the following equation (m is mass and v is velocity): a. Length b. Inertia c. Momentum d. Torque

Q: What does I stand for in the following equation (m is mass and r is distance): a. mass moment of Inertia b. Intensity c. Inductance d. Internal volume

Q: The farther away the mass is located from the center of rotation, the harder it is to rotate the mass about the given center of rotation. a. True b. False

Q: The closer the mass is located to the center of rotation, the harder it is to rotate the mass about the given center of rotation. a. True b. False

Q: The relationship between the mass flow rate and the volume flow rate is given by a. mass flow rate is equal to (time)(volume flow rate) b. mass flow rate is equal to (density)(volume flow rate) c. mass flow rate is equal to (mass)(volume flow rate) d. none of the above

Q: The SI unit for mass flow rate is a. kg/s b. slugs/s c. lbm/s d. none of the above

Q: Mass flow rate is a fundamental dimension. a. True b. False

Q: The amount of mass that flows through something per unit of time is called a. mass moment of inertia b. volumetric flow rate c. mass flow rate d. none of the above

Q: A truck and a motorcycle are moving with the same momentum. Which has the greater kinetic energy? a. Truck b. Motorcycle

Q: The Earth has a mass of and an average radius of . What is the average density of the Earth? a. b. c. d.

Q: What happens to the density of a marshmallow when squeeze it? a. Increases b. Decreases c. Remains constant

Q: What happens to the mass of a marshmallow when squeeze it? a. Increases b. Decreases c. Remains constant

Q: What happens to the volume of a marshmallow when squeeze it? a. Increases b. Decreases c. Remains constant

Q: A rectangular block of aluminum has the following dimensions: . The density of aluminum is . How much does the block of aluminum weigh? a. b. c. d.

Q: When a spinning ice skater pulls her arms inward, her angular velocity a.. increases b. decreases c. remains the same

Q: What is the momentum of a object that slides at across an icy lake? a. b. c. d. None of the above

Q: The SI unit for specific weight is a. b. c. d. N/m3

Q: Specific weight is a fundamental dimension. a. True b. False

Q: The ratio of an object's weight to its volume is a. density b. specific volume c. specific gravity d. specific weight

Q: The SI unit for specific gravity is a. b. c. d. unitless

Q: The specific gravity is unitless a. True b. False

Q: The ratio of an object's density to the density of water is a. density b. specific volume c. specific gravity d. specific weight

Q: The SI unit for specific volume is a. b. c. d.

Q: The ratio of an object's volume to its mass is a. density b. specific volume c. specific gravity d. specific weight

Q: The SI unit for density is a. b. c. d.

Q: Density is a fundamental dimension. a. True b. False

Q: The ratio of an object's mass to its volume is a. density b. specific volume c. specific gravity d. specific weight

Q: Momentum is a fundamental dimension. a. True b. False

Q: A measure of how hard it is to rotate something with respect to its center of rotation is called a. mass b. momentum c. torque d. mass moment of inertia

Q: Which of the following is the British Gravitation unit for mass? a. kilograms b. pound mass c. grams d. slugs

Q: Which of the following is the U.S. customary unit for mass? a. kilograms b. pound mass c. grams d. slugs

Q: Which of the following is the SI unit for mass? a. kilograms b. milligrams c. grams d. slugs

Q: The further away the mass is located from the center of rotation, the easier it will be to rotate the mass about that axis. a. True b. False

Q: Mass is a fundamental dimension. a. True b. False

Q: Matter can exist in four states, depending on its own and the surrounding conditions: solid, liquid, gaseous, or plasma. a. True b. False

Q: A car starting from rest has a constant acceleration of 4 m/s2. How fast will it be going in 5 seconds? a. b. c. d.

Q: A useful variable of traffic information is densityhow many cars occupy a stretch of a highway. a. True b. False

Q: A jiffy is the amount of time it takes light to travel one centimeter. If the speed of light is approximately , how many seconds are in a jiffy? a. b. c. d.

Q: If the pitcher's mound and home plate are apart, how much time (in seconds) does the batter have to react to a fastball? a. 0.45 seconds b. 1 second c. 1.5 seconds d. 2 seconds

Q: If you pull a pendulum back and let it go, the time required for it to return to approximately the same place from which it was released is called a. the period b. the frequency c. the natural frequency d. the amplitude

Q: Period and frequency mean the same thing. a. True b. False

Q: Because it takes the earth 24 hours to complete one revolution about its axis, every 15 degrees longitude corresponds to 1 hour. a. True b. False

Q: The problem is said to be steady when the value of a physical quantity under investigation changes over time. a. True b. False

Q: Most engineering problems may be divided into two broad areas: steady and unsteady. a. True b. False

Q: Time is a fundamental dimension and plays an important role in our daily life in describing events, processes, and many occurrences in our surroundings. a. True b. False

Q: The translational speed of a motorcycle is 20 mph. What is the rotational speed of the 24.4 in diameter front wheel? a. 250 rpm b. 275 rpm c. 300 rpm d. 325 rpm

Q: Volume flow rate measurements are necessary to determine the amount of water or natural gas being used by us in our homes during a specific period of time. a. True b. False

Q: It takes 10 seconds to fill a one-quart jar with water from your kitchen faucet. What is the flow rate, in gpm, from the faucet? a. 1.5 b. 4 c. 10 d. 40

Q: While filling up your car with gasoline, you notice that it takes 3 minutes to dispense 55 liters of gasoline through the 2.5 cm diameter hose. What is the average speed, in m/s, of the gasoline inside the hose? a. 2.48 b. 0.62 c. 6.2 d. 0.248

Q: While filling up your car with gasoline, you notice that it takes 3 minutes to dispense 15 gallons of gasoline. What is the average flow rate in gpm? a. 3 b. 5 c. 10 d. 15

Q: A car traveling at constant speed as it rounds a curve is not accelerating. a. True b. False

Q: A person walks from home to a store with an average speed of 3 feet per second. When returning home from store, she jogs with an average speed of 6 feet per second, following her original path. What is the average speed for the round trip? a. 3 feet per second b. 4 feet per second c. 4.5 feet per second d. 6 feet per second

Q: If a wheel, turning at a constant angular speed, makes 5 complete revolutions every second, what is the angular speed, in revolutions per minute?

Q: If a wheel, turning at a constant angular speed, makes ten complete revolutions every second, what is the angular speed, in radians per second?

Q: When the "A" string of a properly tuned violin is plucked, it takes to return to it's starting position. What is the frequency of this oscillation?

Q: A certain medical imaging device commonly referred to as "ultrasound" creates sound by oscillating with a frequency of . What is the period of this oscillation?

Q: A certain medical imaging device commonly referred to as "ultrasound" creates sound by oscillating with a period of . What is the frequency of this oscillation?

Q: The speed of sound in air is approximately . The speed of light in air is approximately . If 10 seconds elapses between seeing a lightning strike and hearing the thunder, how far away was the lightning strike?

Q: The speed of sound in air is approximately . The speed of sound in steel is approximately . If your friend strikes one end of a steel pipe with a hammer while you listen at the other end, you will hear two distinct sounds: one traveling through the air and the other traveling through the steel pipe. If the pipe is 200 meters long, how much time elapses between the two sounds?

Q: The speed of sound in air is approximately . The speed of light in air is approximately . If a lightning strike occurs three kilometers away, how much time elapses before you hear the thunder?

Q: A unit of measure commonly used to quantify liquid flow is gpm. What does gpm stand for? a. Global Positioning Mechanism b. Gallons per Minute c. Greenhouse Pressure Measurement

Q: A unit of measure commonly used to quantify air flow is cfm. What does cfm stand for? a. Correct Fan Measurement b. Cubic Fan Measurement c. Cubic Feet per Minute

Q: When a solar flare occurs, how long does it take before a scientist sees it? (The Earth-Sun distance is and the speed of light is approximately . a. 8 microseconds b. 8 milliseconds c. 8 seconds d. 8 minutes

Q: A thunderstorm is brewing in the distance. Upon seeing a flash of lightning you begin counting the seconds until you hear the thunder and notice that it took 5 seconds for the sound of thunder to reach you. Assuming the speed of sound in air to be , estimate how far away was the lightning strike? a. 1 mile b. 2 miles c. 5 miles d. 10 miles

Q: A slightly eccentric engineering professor rides a motorcycle whose front wheel has a diameter of . While riding the motorcycle he notices that the front wheel is rotating at . How fast is the motorcycle going? a. 11 mph b. 21 mph c. 31 mph d. 41 mph

Q: A car travels along a certain road at an average speed of and returns along the same road at an average speed of. Calculate the average speed for the round trip. a. b. c. d. e.

Q: Comparing speed and velocity, a. speed is a vector quantity and therefore includes direction. b. velocity is a vector quantity and therefore includes direction. c. speed and velocity mean the same thing. d. none of the above apply.

Q: Ten seconds after starting from rest, a motorcycle is moving at 20 m/s. What is the motorcycle's acceleration in m/s2? Assume constant acceleration. a. b. c. d.

Q: A car traveling at constant speed as it rounds a curve is not experiencing angular acceleration. a. True b. False

Q: A car starting from rest has a constant acceleration of 5 m/s2. How long will it take to reach a speed of ? a. b. c. d.

Q: A car starts from rest and 5 seconds later it is going . What is the car's average acceleration? a. b. c. d.

Q: Your neighbor is digging a hole in his back yard for an in-ground swimming pool. The rectangular hole is 21 feet wide, 42 feet long and 6 feet deep. If a truck can haul 10 cubic yards, how many trips will it take to haul all of the dirt away? a. 10 b. 2 c. 7 d. 20

Q: A rubber ball has a diameter of three inches. What is its volume? a. 4.2 in3 b. 42 in3 c. 1.4 in3 d. 14 in3

Q: A rubber ball has a diameter of three inches. What is its surface area? a. 2.8 in2 b. 0.28 in2 c. 28 in2 d. 280 in2

Q: A certain unsharpened cylindrical pencil is inch in diameter and 10 inches long. What is the pencil's volume? a. 1 in3 b. 0.5 in3 c. 5 in3 d. 10 in3

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