Answer:
C. 29.21 m³
Explanation:
<u>Given the following data;</u>
- Initial volume, V1 = 3.4 m³
- Initial pressure, P1 = 18.9 atm
- Final pressure, P2 = 2.2 atm
To find the final volume, we would use Boyle's law;
Boyles states that when the temperature of an ideal gas is kept constant, the pressure of the gas is inversely proportional to the volume occupied by the gas.
Mathematically, Boyles law is given by;
PV = K
Making V2 the subject of formula, we have;
Substituting the values into the formula, we have;
<em>Final volume, V2 = 29.21 m³</em>
Answer:
dynamic im pretty sure that's it
D. It allows the flow of an electric current in the circuit.
<h3>
Why is it important to have a closed circuit?</h3>
Closed circuit allows the flow of current in the circuit from the battery to the bulb. If the circuit is open then the current will not reach to the bulb or other appliances.
So we can conclude that It is important to have a closed circuit because it allows the flow of an electric current in the circuit.
Learn more about circuit here: brainly.com/question/2969220
#SPJ1
Mechanical Advantage is the value which tells us the factor by which the machine is able to convert the force applied to it to its output.
Ideal Mechanical Advantage of wheel and axle is calculated by
IMA = Wheel Radius / Axle Radius
By virtue, the higher the computed IMA the lower the force needed to be exerted, this is the purpose for using machine, lower input force but larger output. (The smalled the axle radius compared to the wheel radius is the better setup.)
Answer:
8) 709.8875 J
9) The object is at 7.24375 m from the ground
10) Kinetic energy increases as the object falls.
Explanation:
We use the expression for the displacement h(t) as a function of time of an object experiencing free fall:
h(t) = hi - (g/2) t^2
hi being the initial position of the object (10m) above ground, g the acceleration of gravity (9.8 m/s^2), and t the time (in our case 0.75 seconds):
h(0.75) = 10 - 4/9 (0.75)^2 = 7.24375 m
This is the position of the 10 kg object after 0.75 seconds (answer for part 9)
Knowing this position we can calculate the potential energy of the object when it is at this height, using the formula:
U = m g h = 10kg * 9.8 (m/s^2) * 7.24375 m = 709.8875 J (answer for part 8)
Part 10)
the kinetic energy of the object increases as it gets closer to ground, since its velocity is increasing in magnitude because is being accelerated in its motion downwards.
