(a) 120.8 m/s^2
The gravitational acceleration at a generic distance r from the centre of the planet is
where
G is the gravitational constant
M' is the mass enclosed by the spherical surface of radius r
r is the distance from the centre
For this part of the problem,
so the mass enclosed is just the mass of the core:
So the gravitational acceleration is
(b) 67.1 m/s^2
In this part of the problem,
and the mass enclosed here is the sum of the mass of the core and the mass of the shell, so
so the gravitational acceleration is
This statement is true. The angle that the Sun's rays strike a region of Earth determines the amount of heat transferred. For example, as you seen on TV, a laser pointing at an object and that specific angle that the rays of the laser pointed at was being melted. Same goes for the relationship between the Sun's rays and the Earth because it has the same energy that is being emitted per second.
Bro again the same type of sum..
well
it takes 3 second to hit the ground
the height will be
h = 5*3*3
h = 45m
horizontal distance would be
velocity*time
10*3 ,= 30m/s
Answer:
Potential energy will be 
Explanation:
We have given the height of the basin is h = 6 m
Area of the basin 
Volume 
Density 
We know that mass is given by 
We know that potential energy is given by 
Answer: No
Explanation:
Momentum 
refers to how much force is needed to change the motion of a body or object by changing its direction or braking it. In addition, momentum is directly proportional to the mass 
and the velocity 
:
Now, assuming both the object and the porcelain vase have the same velocity 
but different mass, and assuming the mass of the vase is greater than the mass of the object; the momentum of the porcelain vase will be also greater than the momentum of the object.
Hence, the object will not have enough momentum to brake the vase.
