Physics, 25.10.2019 19:43 mooreadrian412

For which optical devices does f have a negative value?

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Answer from: Bleejones00

i think d

Explanation:because concave and convex mirrors have f negative value

Answer from: miles45

B and D ( c )

Explanation:

The optical devices that have f ( focal length ) as negative is the diverging lens ( image b ) and a convex mirror ( image d ).

An optical device is said to have a negative focal length when the image been focused or viewed on it appears on the same side as with the object been viewed as this is observed when images are viewed through a diverging lens ( image b ) and also when an image is viewed through a convex mirror ( image d ). when an image is viewed through an optical device and the image appears on the opposite side the optical device is a said to have a positive focal length ( f )

the negative f ( focal length ) means that the focal point of the optical device is on the same side of the lens as with where the object is placed

Answer from: Quest

hi there!

your question asks at which segment does freezing occur.

since we're talking about water, the freezing point of water will be 32 degrees fahrenheit or below.

hope this ! ~

Answer from: Quest

Since you have not included the experiment situation and the data, of course, i can not give you specific details about it. but i can you with this question.1) i will assume that the motion is projectile (parabolic) motion.2) yes, the horizontal distance depends on the horizontal velocity as, naming vx the horizontal velocity and t the time, it is: x = vx × t3) now, observe that the flight time depends on the vertical velocity as, naming voy the initial vertical velocity, t the time and y the vertical distance before reaching the ground: y = yo + voy×t - gt² / 2.the higher the initial vertical velocity (voy) the longer the object will be flying and so t will be higher in the equation for the horizontal distance.that explains the relationship between the horizontal distance and the horizontal velocity.

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