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A: Given data: Mass (m) = 0.002 kg Velocity (v) = 2 m/s Required: Momentum (P)
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Q: Compute the momentum Mass=22.66 kg Velocity=0.99 m/s
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Q: Find force Mass=2.334 kg Acceleration=0.6 m/s2
A: Given : Mass (m) = 2.334 kg Acceleration (a) = 0.6 m/s2
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- The ignition circuit of an automobile is powered by a 12-V battery. How are we able generate large voltages with this power source?(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) . A solid metal cylinder has a certain resistance. It is then heated and carefully stretched to form a longer, thinner cylinder. After it cools, will its resistance be the same as, greater than, or less than what it was before? Explain our choice.Check Your Understanding Consider the electrical circuits in your home. Give at least two of circuits that must use a combination of series and parallel circuits to operate efficiently.
- A 0.50-W, 220- resistor carries the maximumcurrent possible without damaging the resistor. If the current were reduced to half the value, what would be the power consumed?A copper wire has a resistance of 0.500 at 20.0°C and an iron wire has a resistance of 0.525 at the same temperature. At what temperature are their resistances equal?Why do transmission lines operate at very hig1 voltages while household circuits operate at fairly small voltages?
- Why should you not connect an ammeter directly across a voltage source as shown below?(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) . A power supply is connected to two bare wires that are inserted into a glass of saltwater. The resistance of the water decreases as the voltage is increased. Sketch a graph of the voltage versus the current in the water showing this type of behavior.(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) . A simple electric circuit consists of a constant-voltage power supply and a variable resistor. What effect does reducing the resistance have on the current in the circuit and on the power output of the power supply?
- Discuss the differences between average power and instantaneous power.Check Your Understanding In considering the following schematic and the power supplied and consumed by a circuit, will a voltage source always provide power to the circuit, or can a voltage source consume power?(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) . Explain what current, resistance, and voltage are.