Answer:
the work converted to thermal energy is 40 J.
Explanation:
Given;
work done by the physicist,w = 100 J
height through which the book is raised, h = 0.2 m
efficiency of machine = 60% = 0.6
The useful work done by the machine is calculated as;
useful work = 0.6 x 100 = 60 J
The wasted energy = 100 J - 60 J
The wasted energy = 40 J
The wasted energy by the machine is possibly converted to thermal energy by the frictional part of the machine.
Therefore, the work converted to thermal energy is 40 J.
The convection currents in the mantle caused the crust on top to break apart & go different directions.
<span>3040. Pascals.
The density of olive oil is 0.911 g/cm^3 and the density of water is 1.000 g/cm^3.
To calculate the pressure of 1 cm of water,
1000 kg/m^3 * 9.8 m/s^2 * 0.01 m = 98.000 Pa
To calculate the pressure of 1 cm of olive oil
911 kg/m^3 * 9.8 m/s^2 * 0.01 m = 89.278 Pa
Now to calculate the pressure at the bottom of the container, simply add the products of how many cm of each fluid you have. So
21 * 98.000 Pa + 11 * 89.278 Pa = 2058 Pa + 982.058 Pa = 3040.058 Pa
So the pressure at the bottom of the container will be 3040. Pascals.</span>
