Question

(a) horst
(b) rift valley
(c) plateau
(d) strait
2. The percentage of plain in the total area of lithosphere is—
(a) 34%
(b) 41%
(c) 26%
(d) 48% with calculation​

Answer 1

Answer:

Given :-

Mass of the object = 15 kg

Height of the object = 10 m

To Find :-

The potential energy of an object.

Analysis :-

Here we are given with the mass and height of the object.

In order to find the potential energy of the object substitute the values in the question such that potential energy mass into gravity into height and find the potential energy accordingly.

Solution :-

We know that,

m = Mass

h = Height

PE = Potential energy

g = Gravity

Using the formula,

\underline{\boxed{\sf Potential \ energy=Mass \times Gravity \times Height }}

Potential energy=Mass×Gravity×Height

Given that,

Mass (m) = 15 kg

Gravity (g) = 9.8 m/s

Height (h) = 10 m

Substituting their values,

⇒ PE = mgh

⇒ PE = 15 × 9.8 × 10

⇒ PE = 1470 J

Therefore, the potential energy of an object is 1470 J.