Answer:
b. calculate the constant force exerted on the pole vaulter due to the collision
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A wave vibrating at right angles to the direction of its propagation
Answer:
the force that attracts a body toward the center of the earth, or toward any other physical body having mass.
(1) The difference in pressure between the ends of the pipe is 611 kPa.
(2) The Reynold's number for this torpedo is 1.2 x 10⁷.
(3) The flow of water around the torpedo is turbulent.
<h3>Difference in pressure between the ends of the pipe</h3>
The difference in pressure is calculated by applying Poiseuille formula.
where;
- Q is flow rate
- r is radius of the pipe
- L is length of the pipe
- η is viscosity
- ΔP is change in pressure
<h3>Reynold's number for the torpedo</h3>
<h3>Laminar or turbulent flow </h3>
- A flow is considered laminar if the Reynolds number is up to 2300.
- A flow is considered turbulent if the Reynolds number is greater than 3500.
The calculated Reynold's number (1.2 x 10⁷) is greater than 3500. Thus, the flow is turbulent.
Learn more about turbulent flow here: brainly.com/question/12081428
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Answer:
a) Magnitude of maximum emf induced = 0.0714 V = 71.4 mv
b) Maximum current through the bulb = 0.00793 A = 7.93 mA
Explanation:
a) The induced emf from Faraday's law of electromagnetic induction is related to angular velocity through
E = NABw sin wt
The maximum emf occurs when (sin wt) = 1
Maximum Emf = NABw
N = 1
A = 4 cm² = 0.0004 m²
B = 6 T
w = (284/60) × 2π = 29.75 rad/s
E(max) = 1×0.0004×6×29.75 = 0.0714 V = 71.4 mV
Note that: since we're after only the magnitude of the induced emf, the minus sign that indicates that the induced emf is 8n the direction opposite to the change in magnetic flux, is ignored for this question.
b) Maximum current through the bulb
E(max) = I(max) × R
R = 9 ohms
E(max) = 0.0714 V
I(max) = ?
0.0714 = I(max) × 9
I(max) = (0.0714/9) = 0.00793 A = 7.93 mA
Hope this Helps!!
