It is (A) for the first one and (B) for the second one.
Answer:
Explanation:
Given that
Height = h
Radius = R
From energy conservation
At point B
The minimum speed to complete the the circle
So the kinetic energy at point B
Without falling off at the top (point B)
Answer:
Explanation:
d = Diameter of typical neutron star = 20 km = 20000 m
D = Distance between Earth and Moon =
Here, so we use small angle approximation
The angular diameter of the neutron star would be from Earth.
To prevent static sparks that could occur while you fill fuel is that, a person who is filling the tank should remember that the nozzle of the fuel pump hose should always be in connected or in contact to the tank. This will prevent static sparks from happening to the boat that is going to be used and prevent harm to the person using or refilling the fuel.