Answer:
The transnational kinetic energy of the yo-yo is 0.083 J.
Explanation:
Given that,
Force=0.24 N
Distance in up= 0.17 m
Distance in down = 0.26 m
Mass of yo-yo = 0.057 kg
Initial speed = 2.4 m/s
Suppose we find the increase in the transnational kinetic energy of the yo-yo
The transnational kinetic energy is equal to the change in potential energy.
We need to calculate the transnational kinetic energy of the yo-yo
Using conservation of energy
Where, F = force
h = height
m = mass of yo-yo
Put the value into the formula
Hence, The transnational kinetic energy of the yo-yo is 0.083 J.
Answer:
(C) zero (there is no net horizontal component of the E-field)
Explanation:
If we subdivide the bar into small pieces, each piece (dx) contains a charge (dq), the electric field of each piece is equivalent to the field of a punctual electric charge, and has a direction as shown in the attached figure. For each piece (dx) in the negative axis there is another symmetric piece (dx) in the positive axis, and as we see in the figure for symmetry the sum of their electric fields gives a resultant in the Y axis (because its components in X are cancelled by symmetry).
Then the resultant of the electric field will be only in Y.
(C) zero (there is no net horizontal component of the E-field)
<span>D transformed into gravitational potential energy.</span>
Answer:
Nucleus A with 7 protons and 7 neutrons and Nucleus C with 7 protons and 5 neutrons are isotopes of the same elements
Explanation:
Isotopes are elements that have the same atomic structure but different molecular structure. An atom that has the same atomic number but different mass number are known to be isotopes.
The proton of an atom is the same as its atomic number while the sum of the proton and neutron is equal to its mass number.
According to the question, nuclei that has the same number of proton are isotopes of the same element. Therefore nuclei A and C with 7 protons each are isotopes of the same element since they have the same atomic number i.e number of proton = atomic number.
Their atomic masses of nuclei A and C are 14 and 12 respectively
