Answer:
Silver halide or silver salt is mostly used in photographic films
Explanation:
Silver halide crystals in gelatin are coated onto a film base, glass or paper substrate. And when a sliver halide crystal is exposed to light (photons strike) it turned into a small speck of metallic crystal and these comprise the invisible or latent image which is developed afterwards.
The force on the fry is 
Explanation:
We can find the force acting on the fry by using Newton's second law:

where
F is the net force on the fry
m is its mass
a is its acceleration
For the fry in this problem,


Therefore, the force exerted on the fry is

Learn more about Newton's second law here:
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Answer:
The correct answer is Dean has a period greater than San
Explanation:
Kepler's third law is an application of Newton's second law where the force is the universal force of attraction for circular orbits, where it is obtained.
T² = (4π² / G M) r³
When applying this equation to our case, the planet with a greater orbit must have a greater period.
Consequently Dean must have a period greater than San which has the smallest orbit
The correct answer is Dean has a period greater than San
Answer:
the unit of velocity is meter per second
They are 50 stars in the U.S flag.