Answer:
Leak 1 = 3.43 m/s
Leak 2 = 2.42 m/s
Explanation:
Given that the top of the boot is 0.3 m higher than the leaks.
Let height H = 0.3m and the acceleration due to gravity g = 9.8 m/s^2
From the figure, the angle of the leak 1 will be approximately equal to 45 degrees. While the leak two can be at 90 degrees.
Using the third equation of motion under gravity, we can calculate the velocity of leak 1 and 2
Find the attached files for the solution and figure
Answer:
The magnitude of the induced e.m.f is 571 mV
Explanation:
Given;
magnetic field strength, B = 0.4T
area of the loop, A = 1m²
time = 0.7s
Since the angle of inclination of the magnetic field, then the direction of the induced e.m.f, θ = 0
According to faraday's law; the induced emf is directly proportional to the rate of change of flux.
Thus, magnitude of the induced e.m.f is given as
<u>Harmful</u><u />
-causes heat; if it's not used correctly, it can cause injury
-when falling, the friction between your knee/leg and the ground can cause scrapes
<u>
</u><u>Helpful</u><u />
-helps stop the bike, the brakes rub against the tire which slows it down to a stop
-it can also help move the bike; the chains rub against tires which accelerate the bike
Answer:
4.(615384)Hz
Explanation:
Firstly, let's take a note that the speed of light is much higher than 30m/s, on the other hand visible light has wavelengths measured in nanometers, so I assume we're just supposed to assume the values in the question for the purpose of solving it.
If a wave moves through a point with speed v and has wavelength l, In each second we observe v/l cycles - and cycles per second is the frequency!
F = 30m/s / 6.5m = 4.(615384)/s = 4.(615384)Hz
<span>Using ohm’s law, I = V/R. The voltage given is
45 and the resistance is 10 ohms. Substituting the given values in our
equation. We have, I = 45 / 10. Simplify, I = 4.5 amps. The total current in
the circuit is 4.5 amperes </span>