For the answer to the question above, we are given with two isotopes of oxygen, one that is stable O-18 and O-19 that is unstable. The stability of a nucleus is relative to the nuclear binding energy and mass defect. In this case, nuclear binding energy is always. So the answer is <span>O-19 has a mass defect; O-18 does not have a mass defect.</span>
Answer:
Explanation:
Since Force, F= ma where m is the mass of the body and a is the acceleration of the object. Making acceleration the subject of the formula we obtain that
a=\frac {F}{m}
Substituting 1.8 N for F and 0.43 kg for m then we obtain that
Answer:
Mechanical energy = 35 Joules
Explanation:
Energy can be defined as the ability (capacity) to do work. The two (2) main types of energy are;
a. Potential energy (P.E): it is an energy possessed by an object or body due to its position above the earth.
b. Kinetic energy (K.E): it is an energy possessed by an object or body due to its motion.
Furthermore, the mechanical energy of a physical object or body is the sum of the potential energy and kinetic energy possessed by the object or body.
Mathematically, it is given by the formula;
Mechanical energy = P.E + K.E
Given the following data;
Potential energy = 15 J
Kinetic energy = 20 J
To find the mechanical energy;
Mechanical energy = P.E + K.E
Mechanical energy = 15 + 20
Mechanical energy = 35 Joules