Reference no: EM13965470
1.a. What is the difference between a scalar and a vector quantity?
b. A hiker walks due north for 4.0 km to reach point A and then northeast for 6.0 km to reach point B. Find by calculation or by scale drawing:
- the straight line distance from starting point to B
- the direction from the starting point to
- the average velocity of the hiker if the whole walk takes 2 hours
- the average speed of the hiker if the whole walk takes 2 hours
2. A car moves forward at 54 km/hr for 60 seconds, and then reverses at 18 km/hr for 30 seconds.
a. Sketch a velocity-time graph for this motion
b. Calculate the displacement of the car fro its starting position
c. Sketch a distance-time curve for the motion.
3. A cyclist rides for 100 seconds at a steady speed of 40 m/s up a hill sloping up at 10 degrees
a. If the cyclist and bicycle weighs 85 kg calculate their gain in potential energy over this period
b. If the cyclist's energy output is 2.0 kW over this period calculate the total work done
c. What fraction of the work is:
- converted into potential energy
- converted into kinetic energy
- done against friction
4. Two 60 ohm light bulbs are connected to a 240V supply:
a. Calculate the current if they are connected in series
b. Calculate the current if they are connected in parallel
c. In each case calculate the power consumed by ONE bulb
5. See diagram
a. Calculate the total resistance of the circuit, above and
b. the total current drawn from the supply
c. the voltage across the 8 ohm resistor.
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Manufacture a particular component
: 1. A company uses three different assembly lines A1, A2, and A3 to manufacture a particular component. Of those manufactured by line A1, 5% need re- work to remedy a defect, whereas 8% of A2 s components need rework and 10% of A3 s need re- work. Sup..
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Prepare a schedule of cost of goods manufactured
: Prepare a schedule of cost of goods manufactured. Assume all raw materials used in production were direct materials.
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Reason for networking an organization''s computers together
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Component functions in a satisfactory manner
: A system consists of two components. The proba- bility that the second component functions in a sat- isfactory manner during its design life is .9, the probability that at least one of the two components does so is .96, and the probability that bo..
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What difference between a scalar and a vector quantity
: A car moves forward at 54 km/hr for 60 seconds, and then reverses at 18 km/hr for 30 seconds. Sketch a velocity-time graph for this motion and Calculate the displacement of the car fro its starting position
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Write about summing type and difference amplifiers
: Write about summing type and difference amplifiers?
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Analyzing the rhetorical context of the given essay
: Read the essay, "Why We Need to Understand Science," 1989, Carl Sagan, Parade Magazine. Assess the essay utilizing the "Questions for Analyzing the Rhetorical Context of Texts" (box on previous page).
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Fastener passed inspection
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Four remaining individuals and repeats the rumor
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