Which of the following are not conditions for producing work?
2 answers:
Answer:
A and C
Explanation:
We know that
Work done,W=Fd
Where F=Applied force
d=Displacement of object
Momentum, p= mv
It is not necessary that momentum must be greater than force .If momentum is less than force then the work can be produced because work depend upon displacement and applied force.
If the value of theta is not equal to zero the work can be produced if theta is equal to 30 ,45 or 60 degree.
Therefore, it is not necessary that atleast part of the applies force must act along the same line object moves.
If force is greater than weight then, the work can be produced .
If force is less than the weight then, the work cannot be produced .
Hence, the force must be very large.
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Answer:
KE = 30,000 J
Explanation:
KE = mv²
KE = (600)(10)²
KE = (600)(100)
KE = (60000)
KE = 30,000 J
The number of protons, electrons, and neutrons in the atom of cr-24 is 28, 24, and 24 respectively.
<h3>What is atom?</h3>An atom is the smallest unit of matter, consisting of the positively charged nucleus and the electrons which move around it. The atom can not be divided further.
The atom of a matter is made by three elements-
- 1) Neutron-Neutron is the element of an atom, which has zero charge.
- 2) Proton-Proton is the element of an atom, which has a positive charge.
- 3) Electron-Electron is the element of an atom, which has a negative charge.
The atom of cr-24 has the atomic number 24. The atomic number of atom is equal to the number of proton and electron in an atom. Thus,
Now, if this atom has the mass number of 52 (most common). Then the number of neutron is,
Thus, the number of protons, electrons, and neutrons in the atom of cr-24 is 28, 24, and 24 respectively.
Learn more about the atom here;
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