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Electric Circuits
I am software programmer. I would like to ask some question.
1) Fan is moving, which is it faster when fan is standing horizontal with earth or vertical with same force?
2) Fan can be moving with air? How about in space?
1) Fan is moving, which is it faster when fan is standing horizontal with earth or vertical with same force?
2) Fan can be moving with air? How about in space?
Electric Circuits
initial voltage is 230V ,10%of volt is increased. how much percentage of light will be increased?
Electric Circuits
what does zero ampere mean ?
Electric Circuits
what does zero current through the ammeter means ?
Electric Circuits
Determine max load such that voltage from collector to emitter is less than or equal to one in pnp transistors.
Electric Circuits
A 76 kg student traveling in a car with a constant velocity has a kinetic energy of 1.1 104 J. What is the speedometer reading of the car in km/h?
Electric Circuits
Two infinite, uniformly charged, flat surfaces are mutually perpendicular. One of the sheets has a charge density of + 20.0 pC/m2, and the other carries a charge density of -50.0 pC/m2. What is the magnitude of the electric field at any point not on either surface?
Electric Circuits
Sketch a ray diagram for a spherical convex lens with an object at Do = 2f. (Submit a file with a maximum size of 1 MB.)
This answer has not been graded yet.
Describe the image characteristics. Is it real or virtual?
real
virtual
Is it upright or inverted?
upright
inverted
Is it magnified or reduced?
magnified
reduced
same size
This answer has not been graded yet.
Describe the image characteristics. Is it real or virtual?
real
virtual
Is it upright or inverted?
upright
inverted
Is it magnified or reduced?
magnified
reduced
same size
Electric Circuits
1-An object is placed in front of a converging lens at an object distance of twice the focal length of the lens. Sketch a ray diagram and compare the image and object distances. Repeat this with two more ray diagrams, using different focal lengths and still making the object distance twice the focal length. Can you draw any conclusions by comparing the object distance and the image distance?
2-A spherical concave lens has a focal length of 40 cm, and an object is placed 20 cm from the lens. Draw a ray diagram. (Submit a file with a maximum size of 1 MB.)
This answer has not been graded yet.
Estimate the image distance.
cm
Give the image characteristics.
Is it real or virtual?
real
virtual
Is it upright or inverted?
upright
inverted
Is it magnified or reduced?
magnified
reduced
same size
3-Sketch a ray diagram for a spherical convex lens with an object at Do = 2f. (Submit a file with a maximum size of 1 MB.)
This answer has not been graded yet.
Describe the image characteristics. Is it
2-A spherical concave lens has a focal length of 40 cm, and an object is placed 20 cm from the lens. Draw a ray diagram. (Submit a file with a maximum size of 1 MB.)
This answer has not been graded yet.
Estimate the image distance.
cm
Give the image characteristics.
Is it real or virtual?
real
virtual
Is it upright or inverted?
upright
inverted
Is it magnified or reduced?
magnified
reduced
same size
3-Sketch a ray diagram for a spherical convex lens with an object at Do = 2f. (Submit a file with a maximum size of 1 MB.)
This answer has not been graded yet.
Describe the image characteristics. Is it
Electric Circuits
main differences between betwee vernier scale and main scale
