Answer:
The SI unit of current is ampere which measures the flow of electric charge across a surface at the rate of one coulomb per second.
As you said p=w/t.
but, w=f×s
=500×5=2500j
t=10s
p=w/t
=2500/10=250 watts
Answer:
The energy and the wavelength of the photon are 1.546 MeV and .
Explanation:
Given that,
Kinetic energy = 261 KeV
Planck's constant
Speed of light
Mass of electron
Charge
(A). We need to calculate the energy of the photon
Using formula of rest mass energy
Energy in eV
The total energy of photon
(B). We need to calculate the wavelength of the photon
Using formula of wavelength
Put the value into the formula
Hence, The energy and the wavelength of the photon are 1.546 MeV and .
Answer:
Explanation:
Given
Barometric reading
The above value is pressure head, so converting into Pressure
where density of mercury
g=acceleration due to gravity
h=height