<u>Answer</u>:
Force is directly proportional to the acceleration.
<u>Explanation</u>:
Using to the Newton's second law of motion, we can describe the relationship of force and acceleration.
F = ma
Hence they are directly proportional to each other. If we increase the force in an object then the acceleration of the object will also increase by same. or we can say force is similar to acceleration. Newton's second law says that the acceleration of an object depends on two factor i.e. net force that is acting on object and object's mass.
Answer:
D. A nucleus of 2 protons and 2 neutrons.
Explanation:
A stable nucleus is one that do not disintegrate naturally, majorly due to the even number of its protons and neutrons. Thus they are not radioactive in nature.
From the given question, it would be observed that a nucleus of 2 protons and 2 neutrons would give a helium atom. And this is a stable atoms due to the magnetic number of the components of its nucleus.
Thus, the nuclear configuration that is most stable out of the given options is a nucleus of 2 protons and 2 neutrons. Option D.
Given parameters:
Acceleration of the car = 1.6m/s
Initial speed = 80km/hr
Final speed = 110km/hr
Solution:
Time taken to achieve this speed = ?
Solution:
Acceleration is the rate of change of velocity with the time taken.
Mathematically;
a = 
where a is the acceleration
V is the final velocity
U is the initial velocity
T is the time taken
Now make the unknown time the subject of the expression;
aT = V - U
T = 
Convert the given acceleration to km/hr;
1.6m/s = 1.6 x 
x 
x 
= 5.76km/hr
Input the parameters and solve;
T = 
= 5.2hrs
The time taken is 5.2hrs
Answer:C, Atoms of iron are different from atoms of nickel.
Explanation:All the atoms that make up each type of element are alike, and they are different from the atoms that make up every other type of element. So the element iron is different from the element nickel because the atoms that make up the iron are different from the atoms that make up the nickel.
