Answer:
Explained.
Explanation:
Only the first question has been answered
In a period from left to right the nuclear charge increases and hence nucleus size is compressed. Thus, atomic radius decreases.
In transition elements, electrons in ns^2 orbital remain same which is the outer most orbital having 2 electrons and the electrons are added to (n-1) d orbital. So, outer orbital electron experience almost same nuclear attraction and thus size remains constant.
A = dv/dt = ak
ak = ( 0.0 m/s - 9.0 m/s ) / ( 3 s )
3m/s^2
Answer:
power is the rate at which energy is transferred or converted
the unit of power is Watts
Answer:
G = 1.670 ×
Explanation:
From Newton's law of universal gravitation,
F =
Where F is the force of attraction, G is the gravitational constant, M is the mass of the earth, R is the radius of the earth.
From Newton's second law of motion,
F = mg
mg =
g =
⇒ G =
If the radius of the earth becomes half,
R = , then;
G =
Given that: g = 9.8 m/, radius of the earth is 6371000 m, mass of the earth is 5.972 × kg, then;
G =
= 1.670 ×
0kg
If the gravitational pull is zero and I multiply by mass I get a zero