Similar chemical behavior. All the members of a group of elements have the same number of valence electrons and similar chemical properties.
Answer: You could tell if you made an error in your calculations by repeating the steps.
Speed of light is the fastest/maximum in vacuum which is equal to 3 × 10^8 m/s, therefore speed of light through any material equal to 4 × 10^8 m/s is physically and theoretically impossible and therefore incorrect.
Explanation:
Answer:
3.03e-19 J
Explanation:
Use the formula E = hc/λ
Where:
h (Planck's constant) = 6.626e-34 J*s
c (speed of light, constant) = 3.00e8 m/s
λ (wavelength) = 656e-9 m
E = energy (in Joules)
E = (6.626e-34 * 3.00e8) / 656e-9 = 3.03018293e-19 = 3.03e-19 J
The reason why icebergs float in the ocean has to do with temperature. Icebergs are colder than the ocean water and therefore the cold water is less dense than the warm water and this causes the Iceberg to float.
Answer:
<h2> 15.18m</h2>
Explanation:
Given data
diameter of piston d= 1cm= 1/100= 0.01m
force F= 1040N/m
distance moved =0.4cm=0.4/100= 0.04m
Area of piston = π^2
= 3.142x (0.01)^2
= 3.142x 0.0001
=0.0003142
=3.142*10-4m^2
Hence to move 0.04m force required
force= pressure * distance
force= 1040* 0.045= 46.8 N
Pressure required = Force / area = 46.8 / 3.142*10-4 = 148949.7 N/ m^2
1000 x 9.81 x h = 148949.7
h =148949.7/9810
h= 15.18m ans