Answer:
friction occurs because no surface is perfectly smooth.
Explanation:
rougher surfaces have more friction between them.
Answer:
The wooden floor exerts a greater force to give the same impulse as a padded mat.
Explanation:
-The wooden floor exerts a greater force for the same impulse as the padded mat.
-Unlike the wooded floor, the padded mat absorbs some of the energy when you fall. This in turn makes it exert less force on the body during the fall.
-Hence, you are less hurt when you fall on the padded floor.
Answer:
Emergent curriculum is an early education approach where teachers design projects unique to a child or group of kids.
The power of the diverging corrective lenses for a nearsighted person who wants to see an apple that is 7 meters away should be <u>-40.1 </u>diopters.
<h3>What will be the focal length of the diverging corrective lenses that can help her to see the apple clearly?</h3>
The focal length of the diverging corrective lenses that can help her to see the apple clearly is determined as follows using the lens formula:
where;
- f is focal length of the lens
- v is the image distance
- u is the object distance
the focal length of diverging lenses is always negative.
Hence in the formula above;
v = 2.5 cm or 0.025 m
u = 7 m
1/-f = 1/0.025 + 1/7
1/-f = 40 + 0.143
1/-f = 40.143
f = -0.025 m
The power of a lens, D = 1/f
Hence, the power of the lens = -40.1 diopters
Learn more about the power of a lens at: brainly.com/question/28714882
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