Answer:
solids cannot flow because the molecules a held tightly together
Answer:
The work function is
Explanation:
From the question we are told that
The light energy is
The stopping voltage is
Generally work function is mathematically represented as
Where KE is the kinetic energy of the ejected electron and it is mathematically represented as
Where e is the charge on the electron
So
Thus
=>
Answer:
The mass of the planet Newtonia is .
Explanation:
It is given that,
Mass of the bob, m = 1.25 kg
Length of the simple pendulum, l = 185 cm = 1.85 m
Time taken by the simple pendulum, T = 1.42 s
The circumference of Newtonia is measured to be 51,4000 km. The time period of the simple pendulum is given by the formula as:
g is the acceleration due to gravity on planet Newtonia
For one complete cycle, T = 2.84 s
The formula of acceleration due to gravity on any surface is given by :
Since,
So, the mass of the planet Newtonia is . Hence, this is the required solution.
Answer:
Control rods
Explanation:
Control rods is unique to nuclear power plants as they are mainly used in nuclear reactors to stabilize the rate of fission of plutonium or uranium. They are usually composed of chemical elements such as cadmium, silver, boron, and indium.
حسنا ، قد يكون أحد الأمثلة على ذلك أن السطح مبلل أو جليدي ، لذلك لا يوجد احتكاك كافٍ للمشي.