Answer:
2.5 x 10^-7 m
Explanation:
We can substract the wavength of the violet light to the wavelength of the red light:
(6.5 x 10^-7 m) - (4.0 x 10^-7 m) = 2.5 x 10^-7 m
This is the difference between this two values of wavelength.
So the wavelength of red light is 2.5 x 10^-7 m longer than violet light.
Answer:
1.69 * 10^(-7) C
Explanation:
We can find this by using the formula for electric potential while making charge the subject of formula:
V = kQ/r
=> Q = (V*r)/k
Where k = Coulumbs constant
V = electric potential
Q = charge
r = distance between doorknob and charged body
From the question,
V = 6 kV = 6000 V
r = (25 + 0.3) cm = 25.3 cm = 253m
Note: Since we assume that the body is a sphere and we know that the charge in a sphere is concentrated in it's center, we add the radius of the sphere to the length of the spark (which tells us the distance between the doorknob and body) to get the distance between the doorknob and the charge.
Hence:
Q = (6000 * 0.253)/(9 * 10^9)
Q = 1.69 * 10^(-7) C
Answer:
Explanation:
Given
When the bulb is squeezed then liquid level rises to height h i.e. pressure decreases inside the bulb which causes rises in the tube
for common elevation i.e. at liquid level pressure must be equal therefore
for
for