1. Which of the following make a magnet move? (click all that are correct.) A constant voltage...
1. Which of the following make a magnet move? (click all that are correct.)
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A constant voltage in a coil far from the magnet. |
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A constant voltage in a coil near the magnet. |
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An oscillating voltage in a coil near the magnet. |
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Nothing to do with a voltage and a coil of wire: electricity doesn’t effect a magnet. |
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An oscillating voltage in a coil far from the magnet. |
2)
A speaker puts out lots of sound. Where did the sound energy come from? More than one answer may be correct: click all that apply.
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Heat |
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Electricity |
||
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Any motion of the magnet |
||
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Nowhere: you don't need energy to make sound. |
||
|
Any motion of the coil |
Homework Answers
Add Answer to:
1. Which of the following make a magnet move? (click
all that are correct.)
A constant voltage...
Question Completion Status QUESTION 7 Which of the following statements about voltage is correct? a. Voltage...
Question Completion Status QUESTION 7 Which of the following statements about voltage is correct? a. Voltage flows between positive and negative terminals of a battery According to Ohm's Law, increasing the voltage across a resistor results in a decrease in the amount of current flowing through the Voltage is defined as the work performed to move charges in an electric field, per unit charge. s defined as the time rate of change of the magnetic field surrounding a conductor in...
QUESTION 1 Which of these statements is NOT correct? A. Endodermis requires energy to move nutrients...
QUESTION 1
Which of these statements is NOT correct?
A.
Endodermis requires energy to move nutrients into vascular
cylinder of roots.
B.
Energy is required to make soil nutrients available to
roots.
C.
Plants spend energy to maintain their symbiotic relationship
with soil microorganisms.
D.
Root cells do not spend energy to transfer nutrients from soil
because their movement is powered by transpiration when water
enters the roots.
E.
All of the above statements are correct.
1 points
QUESTION...
Need help with these, thank you! True Story: A certain farmer was protesting eminent domain being...
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Assuming all else is constant, which of the following statements is CORRECT? Answers: a. Price sensitivity...
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For the system shown in Fig. 1, solve the following problems. (a) Find the transfer function, G(s...
For the system shown in Fig. 1, solve the following problems. (a) Find the transfer function, G(s)X2 (s)/F(s) (b) Does the system oscillate with a unit step input (f (t))? Explain the reason (c) Decide if the system(x2 (t)) is stable with a unit step input (f (t))? Explain the reason 1. 320) 8 kg 2 N/m 4N-s/m 2N-s/m Fig. 1 2. There are two suspensions for a car as shown in Fig. 2 (a) Find the equations of each...
Please help me answer this question it 1 question from A to J. PHY HW. •...
Please help me answer this question it 1 question from A to J.
PHY HW.
• Moments of inertia formulas are provided on the last page of this document • Show all of your work when solving equations. It is not sufficient to merely have a correct numerical answer. You need to have used legitimate equations and algebra. You also need to have correctly used the data. • Units must be specified for any isolated number, not just your final...
PHY HW! All of the Following Questions involve the same situation: You are on the Kingda...
PHY HW!
All of the Following Questions involve the same situation: You are on the Kingda Ka Il Coaster Design Team. It will be the world's fastest and highest roller coaster. The track design is similar in shape to the Kingda Ka, but larger and more powerful The project has been divided into two parts: SUPA HI: The launch, ascent, and first descent. SUPA G: Rounding the bottom of the big dip and going over the big hill. You are...
1.) For a rotating rigid body which of the following statements is not correct? a.) all...
1.) For a rotating rigid body which of the following statements is not correct? a.) all points along a rotating rigid body move with constant speed b.) points along a rotating body move through the same angle in equal time intervals c.) point along a rotating body have velocities that continuously change directions d.) all of the above 2.) Which of the following quantities will impact how a rigid body's rotational speed can change? a.) the body's rotational inertia b.)the...
6) Which of the following statements concerning the constant-growth dividend valuation model is (ar) correct 1....
6) Which of the following statements concerning the constant-growth dividend valuation model is (ar) correct 1. One simple method of estimating the dividend growth rate is to analyze the historical paltem of dividends II. The expected total return equals the return from capital gains plus the return from dividends TIL. The model is applicable to growth firms with initially high growth rates. IV. The intrinsic value calculated using this method can change from one investor to another if their risk-return...
Question Completion Status QUESTION 7 Which of the following statements about voltage is correct? a. Voltage flows between positive and negative terminals of a battery According to Ohm's Law, increasing the voltage across a resistor results in a decrease in the amount of current flowing through the Voltage is defined as the work performed to move charges in an electric field, per unit charge. s defined as the time rate of change of the magnetic field surrounding a conductor in...
QUESTION 1
Which of these statements is NOT correct?
A.
Endodermis requires energy to move nutrients into vascular
cylinder of roots.
B.
Energy is required to make soil nutrients available to
roots.
C.
Plants spend energy to maintain their symbiotic relationship
with soil microorganisms.
D.
Root cells do not spend energy to transfer nutrients from soil
because their movement is powered by transpiration when water
enters the roots.
E.
All of the above statements are correct.
1 points
QUESTION...
For the system shown in Fig. 1, solve the following problems. (a) Find the transfer function, G(s)X2 (s)/F(s) (b) Does the system oscillate with a unit step input (f (t))? Explain the reason (c) Decide if the system(x2 (t)) is stable with a unit step input (f (t))? Explain the reason 1. 320) 8 kg 2 N/m 4N-s/m 2N-s/m Fig. 1 2. There are two suspensions for a car as shown in Fig. 2 (a) Find the equations of each...
Please help me answer this question it 1 question from A to J.
PHY HW.
• Moments of inertia formulas are provided on the last page of this document • Show all of your work when solving equations. It is not sufficient to merely have a correct numerical answer. You need to have used legitimate equations and algebra. You also need to have correctly used the data. • Units must be specified for any isolated number, not just your final...
PHY HW!
All of the Following Questions involve the same situation: You are on the Kingda Ka Il Coaster Design Team. It will be the world's fastest and highest roller coaster. The track design is similar in shape to the Kingda Ka, but larger and more powerful The project has been divided into two parts: SUPA HI: The launch, ascent, and first descent. SUPA G: Rounding the bottom of the big dip and going over the big hill. You are...
6) Which of the following statements concerning the constant-growth dividend valuation model is (ar) correct 1. One simple method of estimating the dividend growth rate is to analyze the historical paltem of dividends II. The expected total return equals the return from capital gains plus the return from dividends TIL. The model is applicable to growth firms with initially high growth rates. IV. The intrinsic value calculated using this method can change from one investor to another if their risk-return...
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