Question

1) the radius of curvature of a convex mirror is 18cm , find it's focal length

2) how can you measure the gravitational potential energy of an object?
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Answer 1

Answer:

1)9Cm

Explanation:

R=2f⇒f=2R=218=9cm.

Answer 2

Answer:

1) R=2f⇒f=2R=218=9cm.

2)The equation for gravitational potential energy is GPE = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 on Earth), and h is the height above the ground in meters.