Answer:
Explanation:
The sense of weightlessness in orbiting satellite is because of the lack of any contact-forces. ... Thus, both the astronaut and the satellite have the same value of g, which is again equal to the centripetal acceleration of the satellite. These two neutralize each other, causing everything to appear weightless.
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Answer:potential energy=810000j
Kinetic energy=810000j
Mechanical energy=810000j
Explanation:
Mass(m)=5000kg
Velocity(v)=18m/s
Kinetic energy=(mxv^2) ➗ 2
Kinetic energy =(5000x18^2) ➗ 2
Kinetic energy =(5000x18x18) ➗ 2
Kinetic energy =1620000 ➗ 2
Kinetic energy =810000j
Kinetic energy = potential energy
Since energy can neither be created nor destroyed
S=d/t
30/0.75=40
Answer: 40km/h
Answer:
There would be a pressure drop in the direction of the higher opening. This will force air to move in from the lower opening and force it to leave through the higher opening. This will create a convectional movement of air, cooling and ventilating the tunnel.
Explanation:
This is in accordance with bernoulli's law of fluid flow which states that the pressure exerted by a moving fluid is lesser than it would exert if it were at rest.
Answer: Bohr's model
Explanation:
The Bohr's model is also known as the solar system model which describe that an atoms are basically imagine in the form of solar system. The Bohr's model basically describe about the atoms that it consist of nucleus with the number of electron in an orbit by using the electrostatic attraction.
The Bohr's model are introduced for overcoming the drawback in the Rutherford model as he proposed an idea that at different energy levels the electron can revolve in certain orbits around nucleus.