Answer:
(B) 0.06W
Explanation:
power absorbed by the resistor is given by
Where V = voltage
R= resistance
I = current through the circuit
we have given V =12 Volt and resistance =2.4 K
current
power using voltage and resistance equation
=0.06W
using current equation = 0.06W
Answer:
The charge on the dust particle is
Explanation:
From the question we are told that
The length is
The width is
The charge is
The mass suspended in mid-air is
Generally the electric field on the carpet is mathematically represented as
Where is the permittivity of free space with value
substituting values
Generally the electric force keeping the dust particle on the air equal to the force of gravity acting on the particles
=>
=>
=>
=>
Answer: D. Transmission
Explanation:
A body is considered opaque to radiation (generally thermal radiation) when its thermal transmittance (the amount of energy that passes through the body per unit of time) is null or zero.
In this sense, when an opaque body is placed in front of a light source, it is illuminated, there will be reflection and absorption of light, but not transmission.
Answer: plasma
Plasma is produced by ionized gas. Movement of charged particles between energy levels produces plasma.
Examples of partially ionized gas are neon signs and lightning flashes.
Answer:
When two objects collide, a force is exerted on each object. The two forces are in opposite directions but the same strength. Even though the force on each object in a collision is the same strength, the objects will have different velocity changes if their masses are different.
Explanation:
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