Answer:
Digital signals are a more reliable form of transmitting information because an error in the amplitude or frequency value would have to be very large in order to cause a jump to a different value. Signals are composed of infinite possible values. Signals are composed of only two possible values: 0 or 1.
Explanation:
Answer:
600 cycles
A phone battery is typically designed to last around 500 to 600 cycles, and a cycle is defined as charging a completely dead battery to 100% then draining it to zero again.
Explanation:
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A.) For letter a, we use the law of universal gravitation using the constant G = 6.674×10−<span>11 m3</span>⋅kg−1⋅s−<span>2
Grav. F = G*m1*m2*(1/d^2)
m1 is mass of electron = </span>9.11 × 10-31<span> kg
m2 is mass of proton = </span>1.67 × 10<span>-27 kg
d = 4.5 nm = 4.5 x 10^-9 m
Grav F = 5.01 x 10^-51 N
b.) </span>For letter b, we use the Coulomb's using the constant k = 9×10^9 N
Electric force = k*Q1*Q2*(1/d^2)
Q1 is charge of electron = -1.6 × 10-19 C
Q2 is charge of proton = +1.6 × 10-19 C
Electric force = 1.14 x 10^-11 N
(a) 0.0068 Wb
Since the plane of the coil is perpendicular to the magnetic field, the magnetic flux through the coil is given by
where
N = 200 is the number of loops in the coil
B is the magnetic field intensity
is the area of the coil
At the beginning, we have
so the initial magnetic flux is
at the end, we have
so the final magnetic flux is
So the magnitude of the change in the external magnetic flux through the coil is
(b) 0.567 V
The magnitude of the average voltage (emf) induced in the coil is given by Faraday-Newmann law
where
is the variation of magnetic flux
is the time interval
Substituting into the formula, we find
(c) 0.142 A
The average current in the coil can be found by using Ohm's law:
where
I is the current
V is the voltage
R is the resistance
Here we have:
V = 0.567 V (induced voltage)
(resistance of the coil)
Solving for I, we find
Light waves slow down when they go from air into water. Then, once they're in the water and traveling through it, they don't change speed.