Roberto and Genevieve are trying to separate a mixture of beads using a sifter. The chart below shows the colors and sizes of th
e beads. What size must the holes in the sifter be to separate the red and blue beads from the yellow beads?
2 answers:
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Answer:
Explanation:
Given
Launch angle =u
Initial Speed is
Horizontal acceleration is
At maximum height velocity is zero therefore
Total time of flight
During this time horizontal range is
For maximum range
(b)If a =10% g
thus
Answer:
The magnetic field strength needed is 1.619 T
Explanation:
Given;
Number of turns, N = 485-turn
Radius of coil, r = 0.130 m
time of revolution, t = 4.17 ms = 0.00417 s
average induced emf, V = 10,000 V.
Average induced emf is given as;
V = -ΔФ/Δt
where;
ΔФ is change in flux
Δt is change in time
ΔФ
where;
N is the number of turns
B is the magnetic field strength
A is the area of the coil = πr²
θ is the angle of inclination of the coil and the magnetic field,
V = NBACos0/t
V = NBA/t
B = (Vt)/NA
B = (10,000 x 0.00417) / (485 x π x 0.13²)
B =1.619 T
Thus, the magnetic field strength needed is 1.619 T