Answer:
Because the electrons they have are valence electrons.
Explanation:
Hope this helps
Looking for t, the computation would be:
t = 2[initial vertical velocity] / g = 2u/g
=> 9 = 2u/9.81
or u = 9 x 9.81 / 2 = 44.16 m/s (upwards)
conservation of energy: loss in potential energy(mgh) would be equal to gain in kinetic energy (½mv²)
=> ½mv² - ½mu² = mg29
=> v² = 58(9.81) + 44.16^2
= 568.98 + 1950.1056 = 2519.0856
getting the square root will give us the speed of the rock, which is:
=> v = √[2519.0856] ~= 50.19 m/s (directed downwards)
Clear, dry weather.
Low air pressure system is associated with air that rises high in the atmosphere (which becomes colder and converted into water vapours). This results in wet and cloudy conditions.
On the contrary, high air pressure system is linked to settled air that does not rise high in the atmosphere. This brings clear and dry conditions as no condensation and precipitation occurs in this case.
Answer:
486 of cell membranes
Explanation:
one cell membrane has 7*10^-9m as the height
So, by dividing 3.4 with 7*10^-9 you will get the number of cell require to form the height.
3.4/(7*10^-9)=485.71
because we can't have decimal number of cell we would round it into three significant figures, 486.
This phenomenon is as a result of static friction created by the tumbling clothes. Static friction results from the rubbing together of two or mores objects or body and electrons are stripped from one surface of the clothes more than the other. This creates an electrostatic force of attractions between the positive charges on one cloth and the negative charges on the other cloth.(unlike charges attract).
