Answer:
Wavelength of light in (nm) = 579 nm
Explanation:
At first you find out the amount of energy needed to just eject one electron. This is given by 
this energy is given in question in kj/mole. This is the work function of cesium for each electron is equal to the planc'k einstein equation.
Solids- wood, sand, brick, rock
Liquids- water, milk, blood, coffee
Gases- air, helium, nitrogen, hydrogen
D. Changes
Hope this helps :)
Answer:
d = 3.29 g/cm³
Explanation:
Given data:
Density of material = ?
Mass of material = 56.6 g
Volume of material = 17.2 cm³
Solution:
Formula;
d = m/v
d = density
m = mass
v = volume
by putting values,
d = 56.6 g/ 17.2 cm³
d = 3.29 g/cm³
Answer:
Gravity
Explanation:
All matter exerts a force, which is called , that pulls all other matter towards its center. The strength of the force depends on the mass of the object: the Sun has more gravity than Earth, which in turn has more gravity than an apple. Also, the force weakens with distance. Objects far from the Sun won’t be influenced by its gravity.
