Answer:
Overload current, short-circuit current and short circuit
Explanation:
Overload current is an excessive current relative to normal operating current, but one that is confined to the normal conductive path provided by the conductors, circuit components, and loads of the distribution system.
A short-circuit current is a current that flows outside the normal conducting path.
One generally accepted definition of short circuit is when a phase or ungrounded conductor comes in contact with, or arcing current flows between, another phase conductor, neutral, or ground.
Answer:
option A
Explanation:
given,
momentum of blue car in west direction = Pa = 2 kg.m/s
momentum of red cart in east direction = Pb = 3 kg.m/s
total momentum of the two cart = ?
Pa = 2 Kg.m/s
Pb = -3 kg.m/s
Total momentum
P = Pa + Pb
P = 2 - 3
P = - 1 kg.m/s
hence, the total momentum of the two carts after the collision is 1.0 kg•m/s
The correct answer is option A
(b) Red
(c) Green
(d) Violet
The color which is displaced the most will be "Violet".
According to the question,
Indices of refraction,
Red, = 1.520
Green, = 1.526
Violet, = 1.538
The higher the refractive index of something like a wavelength, the generally greater the departure from the glass's surfaces or ground. The emerging ray always seems to be perpendicular towards the incident light.
You now understand something the greater more deviation somewhere at this same surface of the object, the greater the laterally or sideways displacement.
Thus the response above i.e., "Option d" is correct.
Find out more information about refractive index here:
Answer:
(d) Violet
Explanation:
The formula for lateral displacement = t sin ( i - r ) / cos r
where t is thickness of slab , i is angle of incidence , r is angle of refraction
refractive index = sin i / sin r
if refractive index is high , for given i , angle of r will be less
i - r will be more , hence sin( i - r ) will be more
cos r will be less ( larger the angle , lesser will be its cos value )
sin( i - r ) / cos r will be more
lateral displacement will be more .
hence higher refractive index results into greater displacement .
So violet ray will undergo maximum displacement .
The house absorbs mostly blue light
The house reflects mostly blue light
The house reflects every color expect blue
Answer: The house reflects mostly blue light.
Explanation: The color of an object as seen by our eyes is determined by the color of the light that they reflect.
In case of a blue painted house, all the other colors of white light ( which is a combination of multiple colors) falling on the house are absorbed and only the blue colored light gets reflected back. Hence the house appears to be blue to our eyes.
3.2 m
0.80 m
4.0 m
Answer:
Explanation:
It is known that the oscillation period of a pendulum can be described as
,
where T is the oscillation period, L is the length of the pendulum and, g is the gravity.
Solving For the length we get:
.
We know that g equals 5 times earth's gravity,
,
and from the angular displacement graphics, it can be seen that the period is
.
Now, we can easily compute the length of the pendulum:
Explanation:
The period (time per cycle) is 1.0 s. The gravity is 5g or 49 m/s². Therefore:
T = 2π √(L / g)
1.0 s = 2π √(L / 49 m/s²)
L = 1.2 m