Answer:
An AC circuit
Explanation:
In Alternate current, current reverses many times periodically.
Answer:
a. the product of the current and the time interval
Explanation:
the basic formula is: ![Q = It](https://tex.z-dn.net/?f=Q%20%3D%20It)
current means the time rate of flow of charge: ![I =\frac{Q}{t}](https://tex.z-dn.net/?f=I%20%3D%5Cfrac%7BQ%7D%7Bt%7D)
where Q - charge
I - current
t - time
Density = Mass / Volume
Mass = 0.69kg
Volume of cylinder (coin) = Area X Height
Area of coin = (3.14)(0.03)^2
Height = Thickness = 0.003m
Volume of coin = (0.0003) X (3.14)(0.03)^2
Density = (Mass of coin) / (Volume of coin)
<span>The uncertainty principle states that the position and momentum
of a particle cannot be precisely determined.</span>
Answer:
36.87 km/h
Explanation:
Convert all the units in SI system
1 mile = 1609.34 m
d1 = 6 mi = 9656.04 m
t1 = 15 min = 15 x 60 = 900 s
d2 = 3 mi = 4828.02 m
t2 = 10 min = 10 x 60 = 600 s
d3 = 1 mi = 1609.34 m
t3 = 2 min = 2 x 60 = 120 s
d4 = 0.5 mi = 804.67 m
t4 = 0.5 min = 0.5 x 60 = 30 s
Total distance, d = d1 + d2 + d3 + d4
d = 9656.04 + 4828.02 + 1609.34 + 804.67 = 16898.07 m = 16.898 km
total time, t = t1 + t2 + t3 + t4
t = 900 + 600 + 120 + 30 = 1650 s = 0.4583 h
The ratio of the total distance covered to the total time taken is called average speed.
Average speed = 16.898 / 0.4583 = 36.87 km/h