Answer:
Weathering
Explanation:
The geologic process of breaking down rocks into smaller and smaller units or pieces is known as weathering.
The physical disintegration and chemical decomposition of rocks to form sediments and soils is known as weathering.
The agents of weathering are wind, water and glacier.
- Chemical weathering entails the decomposition of rocks.
- Mechanical weathering is the physical disintegration of rocks.
Therefore, weathering breaks down rocks.
Erosion removes the weathered materials.
force of friction on the cart is given as

here we also know the reaction force due to surface

so we can say reaction force is given as




now by force balance we will say



also we know that



now minimum force required to set this into motion

here we know that



So it will require 259 N minimum force to move it
Answer:
1,600 to 1,700 kilocalories per day
Explanation:
•THAT THE PROPAGATION OF SOUND WAVES NEED MEDIUM TO TRAVEL
•THE MEDIUM SHOULD POSSES ELASTICITY
•FOR THE FASTER PROPAGATION OF SOUND THE PARTICLES SHOULD BE VERY CLOSE TO EACH OTHER