Douglas Stefanski’s spectacularly sleek hovercraft glides down a track of 36m. It takes 13 him seconds to cross the finish line.
1 answer:
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Answer:
a. 1000N/C
Explanation:
Data mentioned in the question
Electrical field magnitude = 1000 NC
Perpendicular distance = 0.1 m
Perpendicular distance = 0.2 m
Based on the above information, the electric field is
As we know that
where,
= surface charge density
E = distance from nearby point to sheet i.e be independent
The distance at 0.1 and 0.2, the electric field would remain the same
So,
Based on the above explanation, the first option is correct
Answer:
Δp = 620 N.s
Explanation:
- Newton's second law, was originally conceived as follows:
- In this way, a net force applied on an object, is equal to the rate of change of the momentum of the object regarding time.
for m= constant, it reduces to F= m*a.
- Replacing in (1) F= 62 N, and Δt = 10.0 s, we can solve for Δp (object's change in momentum) , as follows: