What is the function of the lens of an eye
2 answers:
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Answer:
a
b
c
Explanation:
From the question we are told that
The mass of the bag is
The normal force experienced is
The maximum acceleration of the bag is
Generally this normal force experience by the bag is mathematically represented as
=>
=>
=>
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Generally for the bag not to slip , it means that the frictional force is equal to the sliding force
Hence is mathematically represented as
While is mathematically represented as
So
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Generally from the workdone equation we have that
Here is the work done by friction which is mathematically represented as
Here s is the distance covered by the bag
is zero given that velocity at rest is zero
and
so
=>
substituting 2.55 m/s for v_i and 0.350 for \mu_k we have that
=>
Answer:
Q = 4 Q₀
Explanation:
This is an exercise on capacitors, where the capacitance is
C =
if we apply the given conditions
C = \epsilon_{o} \ \frac{2A}{0.5d}
C = 4 \epsilon_{o} \ \frac{A}{d}
let's call the capacitance Co with the initial values
C₀ = \epsilon_{o} \ \frac{A}{d}
C = 4 C₀
The charge on each plate of a capacitor is
Q = C ΔV
If the potential difference is maintained, the new charge is
Q = 4 C₀ ΔV
let's call
Q₀ = C₀ ΔV
we substitute
Q = 4 Q₀