Answer:
The largest allowable Io = 5.863 * 10^26 photons
Explanation:
thickness of slab = 2.8 mm
First we express the energy of each photon
wavelength = 313 nm
attached below is the detailed solution on how i arrived at the answer above
note : we use 2 in the integral because the slab is exposed to light from two different direction
The hint is wrong.
Volume of a cylinder is π r² h .
For the cylinder in the question,
Volume = ( π ) · (1.5 cm)² · (5.3 cm)
= ( π ) · (2.25 cm²) · (5.3 cm)
= ( π ) · (11.925 cm³)
= 37.4 cm³
Answer:
0.80 m
Explanation:
Neglecting friction, the total mechanical energy of the pendulum is constant.
E = K + U where K = kinetic energy and U = potential energy.
At its release point of 0.80 m, the pendulum bob has a mechanical energy which is equal to its potential energy, since, its initial kinetic energy is zero. By the time the bob swings to the other end, it has a mechanical energy equal to it initial potential energy since total energy is conserved.
Neglecting friction, the pendulum bob would swing back to its original height of 0.80 m since the total mechanical energy is conserved and at its highest point, it is purely potential energy.
So, the height the pendulum bob swings to after release from a height of 0.80 m neglecting fiction is 0.80 m.
It may not be the middle key on the piano, but if you took away all keys except for the c keys, middle c is in the middle!
Hope this helps Buddy!
Brainliest PLease!
~Courtney