Answer:
9m
Explanation:
Given parameters:
Volume of the water = 5liters;
Since density = 1g/cm³
1L = 1000cm³
5L = 5000cm³
So;
mass = density x volume = 1 x 5000 = 5000g ; 5kg
Work done = 450J
Acceleration due to gravity = 10m/s²
Unknown:
Depth of the well = ?
Solution:
To solve this problem;
Work done = mass x gravity x depth
450 = 5 x 10 x depth
depth = 9m
Answer
Correct Answers are Mid ocean ridges are sites of seafloor spreading
and Younger ocean floor is created
Explanation
Harry H. Hess was a geophysicist. In 1960, he proposed a theory which is later became known as 'Sea Floor Spreading'. Hess discovered that the oceans were shallower in the middle. According to Hess, From Earth’s mantle molten material is continuously flowing along the crests of the mid-ocean ridges.
As soon as temperature of magma decreases, it is pushed away from the flanks of the ridges. Due to this process a younger ocean floor is created.
Hess also proposed that due to light weight of continental crust, it didn't sink back into the deep earth at trenches as did the oceanic crust.
Answer:
A few of the positive particles aimed at a gold foil seemed to bounce back.
Explanation:
Answer:
The distance between two protons is 0.1 m
Explanation:
Given that,
The magnitude of force between two protons is,
We know that the charge on proton is,
If F is the electric force between two charges. It is given by the electrostatic force of attraction of repulsion. It is given by :
d is the distance between charges
d = 0.1 m
So, the distance between two protons is 0.1 m. Hence, this is the required solution.
Answer: 266.67 s
Explanation:
Average velocity is the rate of change of displacement.
Bird flies 2400 m due west at an average velocity of 9.0 m/s.
Given, average velocity, v = 9.0 m/s
Displacement, d = 2400 m
Thus, bird was in flight for 266.67 s to fly from nest to land in a tree 2400 m due west.