Answer:
Focal length of the mirror will be 660 mm
Explanation:
We have given that sunlight is focused at a distance of 330 mm in front of mirror
So focal length f = 330 m
We have to find the radius of curvature
Radius of curvature is double the focal length
So radius of curvature = 2× focal length = 2×330 = 660 mm
So focal length of the mirror will be equal to 660 mm
7). Stopping is an acceleration.
2nd law . . . . . f = m a
Bigger mass needs more force.
Bowling ball has more mass than a golf ball.
9). 2nd law . . . . . f = m a
It doesn't say anything about where the force comes from,
only the size of the force. A child, dog, bird, adult, or
tow-truck have to use the same amount of force to produce
the same result.
10). 2nd law . . . . . f = m a
More acceleration requires more force.
Mantle I think idrk cuz of erosion