Answer:
<h3>Law of reflection</h3>
Explanation:
According to the laws of reflection,
- Incident ray, reflected ray and normal lie on the same plane.
- Angle of reflection and angle of incidence are always equal.
→ Angle of reflection : Angle of which light rays reflect off surface.
→ Angle of incidence : Angle at which light rays strikes the surface.
Answer:
<h2>18.51 J</h2>
Explanation:
The kinetic energy of an object can be found by using the formula
m is the mass
v is the velocity
From the question we have
We have the final answer as
<h3>18.51 J</h3>
Hope this helps you
Answer:
The work required to cause this volume change is 2 x 10⁶ J
Explanation:
Given;
constant pressure of the gas, P = 100 kPa = 100,000 Pa
change in volume of the gas, ΔV = 20 m³
The work required to cause this volume change is calculated as;
W = PΔV
Substitute the given values and solve for the required work (W).
W = (100,000)(20)
W = 2 x 10⁶ J
Therefore, the work required to cause this volume change is 2 x 10⁶ J
Answer:
Given,
Explanation:
mass(m)=2400kg
velocity(v)=15m/s
kinetic energy(K.E.)=1/2mv2
KE=1/2×2400×15^2
=1/2×540000
=270000Joule
Answer:
447 K
Explanation:
25 C = 25 + 273 = 298 K
Assuming ideal gas, we can apply the ideal gas law
Since pressure is tripled, then . Volume is halved, then