Answer:
average emf induced in the coil is 1.57 x V
Explanation:
Given data
n = 10 turns per centimeter = 1000 m^-1
N = 5
cross-sectional area A = 5.0 cm2 = 5.0 x 10^-4 m²
current = 0.25 A
to find out
average emf induced in the coil
solution
we will find emf by the given formula
emf = - (μ×N×n×A×ΔI ) / t ..................1
here
μ = 4π x 10^-7 and
N = 10
n = 1000
A = 5.0 x 10^-4
ΔI = 0.25
t = 0.050
put all value in equation 1
emf = - (μ×N×n×A×ΔI ) / t
emf = - (4π x 10^-7 ×5 ×1000× 5.0 x 10^-4 × 0.25 ) / 0.050
emf = 1.57 x V
average emf induced in the coil is 1.57 x V
A 2-kg bowling ball sits on top of a building that is 40 meters tall.
GPE
A 2-kg bowling ball rolls at a speed of 5 m/s on the roof of the building that is 40 tall
its moving n its on top of a bldg. so ans is both KE n GPE
A 2-kg bowling ball rolls at a speed of 10 m/s on the ground.
KE
A 20-kg child is tossed up into the air by her parent. The child is 2 meters off the ground traveling 5 m/s.
moving n in the air. ans is both KE n GPE
eqn: KE= 1/2mv^2, GPE=hmg
A 1,000-kg car has 50,000 joules of kinetic energy. What is its speed?
50000=1/2*1000^v^2
v=10m/s
A 200-kg boulder has 39,200 joules of gravitational potential energy. What height is it at?
39200=200*9.8*h
h=20m
A 1-kg model airplane has 12.5 joules of kinetic energy and 98 joules of gravitational potential energy. What is its speed? What is its height?
12.5=1/2*1*v^2
v=5m/s
98=1*9.8*h
h=10m
Answer:
D) -Q
Explanation:
The charge inserted will induce -Q charge on the inner surface and + Q on the outer surface of the shell . This charge is called bound charge because it remained attached with opposite charge inserted inside.
The three ways a person can manipulate light
would be the following:,
filter, and the time the photograph is taken
<span>1.
</span>Angle
- <span>The </span>camera angle<span> <span>marks
the specific location at which the movie </span></span>camera<span> <span>or
video </span></span>camera<span> is
placed to take a shot.</span>
<span>2.
</span>Filter - Camera<span> <span>lens </span></span>filters<span> <span>still have many uses in digital photography,
and should be an important part of any photographer's </span></span>camera<span> bag.</span>
<span>3.
</span>Time
the photograph is taken - The golden hour, sometimes called the "magic
hour", is roughly the first hour of light after sunrise, and the last hour
of light before sunset, although the exact duration varies between seasons.
During these times the sun is low in the sky, producing a soft, diffused light
which is much more flattering than the harsh midday sun that so many of us are
used to shooting in.
I am hoping that these answers
have satisfied your queries and it will be able to help you in your endeavors, and
if you would like, feel free to ask another question.