Explanation:
Because combining primary colors od light like red, blue, and green created secondary colors like yellow, cyan, and magenta
Magnetic fields
Explanation:
The presence of magnetic fields best explains why a magnet can act a distance on other magnets or on objects containing certain metals.
- Magnetic fields are lines of forces around a bar magnet.
- These lines of forces attracts and repels other magnetic bodies and metallic bodies round it.
- Magnetic lines of forces originates at the north pole and enters in the south pole.
- Areas around a magnetic body are bounded by force fields.
- A magnet has permanent magnetic fields round it.
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Answer: increases
Explanation:
Because the relationship between hand d is counter
Best Answer:<span> </span><span>hf = work function + KE
However if you are looking at the max wavelength (or threshold frequency) then there will only be just enough energy for the photoelectrons to be liberated, hence their KE will be 0.
So hf = work function
convert eV to joules, 2.4 x (1.6 x 10^-19) = 3.84 x 10^-19
therefore, hf = 3.84 x 10^-19
f = 3.84 x 10^-19 / planck's constant which is 6.63 x 10^-34
f = 5.79 x 10^14 Hz
c = frequency x wavelength,
wavelength = speed of light/frequency
= (3x10^8)/(5.79x10^14)
=5.18 x 10^-7 metres</span>
Answer:
The value of current through the rod becomes half
Explanation:
As per Ohm's law we know that the current through a resistor is given as
here we know that
here we know that the length of the cylinder is L and area is A so the value of current through the rod is given as
now we have change the length of the conductor to twice of initial value and rest all parameters will remain the same
so we will have
now from above two equations we have
so new current will become
