The cathode ray experiment showed that they were both negative and positive charges in the atom. This led him to theorize that the charges MUST be spread out evenly throughout the atom. this is the plum-pudding model
Answer:
The energy of the system shall be 8 Joules
Explanation:
In an undamped simple harmonic motion the total energy of the system is conserved which means that the sum of potential and kinetic energies of the system remains constant throughout the motion of the system
In the given problem The total energy of the system at is
This energy shall remain conserved throughout the motion thus when the system is at The total energy of the system shall still be 8 Joules.
Answer:
The distance used to calculate the pressure of atmosphere is 75 cm.
Explanation:
- Mercury barometer is used to find the pressure of the atmosphere where it is placed.
- As shown in the figure, the barometer has an inverted tube where mercury has risen by 75 cm. This height is taken into count to measure the atmospheric pressure.
- At the place with high pressure the mercury in the inverted tube will go very high and vice versa.
- Hence to find the pressure we must note down the height of mercury that has risen the inverted tube.
The basketball player must be going at 3.57 m/s<em> </em>when she leaves the ground.
<u>Given the following data:</u>
We know that acceleration due to gravity (a) for an object or body is equal to 9.8 meter per seconds square.
To find how fast (velocity) the basketball player must be going when she leaves the ground, we would use the third equation of motion;
<u>Where:</u>
- S is the distance covered.
Substituting the given parameters into the formula, we have;
<em>Final velocity, V </em><em>= </em><em>3.57 m/s</em>
Therefore, the basketball player must be going at 3.57 m/s<em> </em>when she leaves the ground.
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Answer:
heat pressure, neutron degeneracy, electron degeneracy,nothing.
Explanation:
In main sequence star, gravity's inward pull is greatly balanced by the heat pressure. In the white dwarf, gravity is mainly balanced by the electron degeneracy pressure that arises from the fact that the electrons are fermions and they obey the Pauli's exclusion principle. So there is no two electrons that have the same the four quantum numbers.
While in neutron star, the neutron degeneracy pressure obeys the Pauli's exclusion principle that gives rise to the degeneracy pressure and noting pushes against the gravity in the black hole. Therefore the correct option is the heat pressure, neutron degeneracy, electron degeneracy and nothing.