Question and answer
No plant can survive without water.
No plant can survive without water. TRUE.
Question|Asked by dmlharris
Asked 4/10/2019 9:50:21 AM
Updated 7/8/2019 7:18:43 AM
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No plant can survive without water. TRUE.
Added 7/8/2019 7:18:43 AM
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Questions asked by dmlharris
If a 72-candela light source is located at a distance of 3 meters from a surface, the illuminance on the surface is _______ lux. A. 24 B. 216 C. 648 D. 8
Question|Asked by dmlharris
Not Answered
Updated 7/8/2019 7:28:00 AM
1 Answer/Comment
If a 72-candela light source is located at a distance of 3 meters from a surface, the illuminance on the surface is 8 lux.
E = I / s²
E = 72/9 = 8 lux
Added 7/8/2019 7:28:00 AM
This answer has been confirmed as correct and helpful.
If red and yellow paint are mixed together, which color of light will be reflected? A. Orange B. Red C. Black D. White
Weegy: If red and yellow paint are mixed together, orange light will be reflected. User: Which of the following will not be useful in trying to correct spherical aberration? A. Using a circular stop to block out the outside rays of light B. Using a diaphragm to block outside rays of light C. Using proper grinding when an object is at a specific distance from the lens D. Using a combination lens made up of lenses, each of which has a different index of refraction (More)
Question|Asked by dmlharris
Not Answered
Updated 4/3/2019 12:25:46 PM
1 Answer/Comment
Using a combination lens made up of lenses, each of which has a different index of refraction -will not be useful in trying to correct spherical aberration.
Added 4/3/2019 12:25:46 PM
This answer has been confirmed as correct and helpful.
A circuit contains two devices that are connected in parallel. If the resistance of one of these devices is 12 ohms and the resistance of the other device is 4 ohms, the total resistance of the two devices is A. 0.333 ohms. B. 0.0625 ohms. C. 16 ohms. D. 3 ohms.
Question|Asked by dmlharris
Not Answered
Updated 34 days ago|10/23/2020 8:16:42 PM
1 Answer/Comment
A circuit contains two devices that are connected in parallel. If the resistance of one of these devices is 12 ohms and the resistance of the other device is 4 ohms, the total resistance of the two devices is 3 ohms.

Solution:
Total resistance = 12*4 / (12+4) = 48/16 = 3 ohms.
Added 34 days ago|10/23/2020 8:16:42 PM
This answer has been confirmed as correct and helpful.
A current of 9 A flows through an electric device with a resistance of 43 . What must be the applied voltage in this particular circuit? A. 4.8 V B. 387 V C. 4.8 A D. 387 A
Question|Asked by dmlharris
Not Answered
Updated 34 days ago|10/23/2020 8:36:50 PM
1 Answer/Comment
A current of 9 amps flows through an electric device with a resistance of 43 ohm. The applied voltage in the particular circuit is 387 volts.

Solution: V = IR; V = 9 * 43 = 387 volts.
Added 34 days ago|10/23/2020 8:36:50 PM
This answer has been confirmed as correct and helpful.
A series circuit contains a generator, two devices, and connecting wires. The resistances of the two devices are 15 ohms and 10 ohms. The voltage supplied by the generator is 75 V. What will be the voltage drop in the device with 10 ohms of resistance?
Question|Asked by dmlharris
Not Answered
Updated 4 days ago|11/22/2020 5:43:06 PM
1 Answer/Comment
A series circuit contains a generator, two devices, and connecting wires. The resistances of the two devices are 15 ohms and 10 ohms. The voltage supplied by the generator is 75 V. 30 V will be the voltage drop in the device with 10 ohms of resistance. Solution: 75/(15 + 10) = 3V. per ohm. (3V x 10R) = 30V.
Added 4 days ago|11/22/2020 5:43:06 PM
This answer has been confirmed as correct and helpful.
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