Answer:
Tremendous heat and pressure within the earth cause the hot magma to flow in convection currents. These currents cause the movement of the tectonic plates that make up the earth's crust.
Answer:
Explanation:
Given
Velocity of bat 
Frequency of sound 
velocity of sound 
using Doppler Effect apparent frequency is given by
where
apparent frequency
v=velocity of sound in the given media
velocity of source
velocity of observer
here velocity of source is zero
as source is travelling towards source thus
The formation of bonds releases energy.
Answer:
1. floating water
2. they are equal
3.true
4.pushes back down with the force of 5n
Explanation:
To determine the heat released by the process of condensation, we simply multiply the amount of the gas that condensed to the latent heat of vaporization. We do as follows:
Heat released = 21 J/g (12.0 g ) = 252 J of heat released
