Answer: D. Diffract
Explanation:
Diffraction is a phenomenon that is based on the deviation of the waves (light waves in this case) when encountering an obstacle.
In addition, it is important to note this phenomenom occurs in all types of waves (ncluding electromagnetic waves).
So, in a general way:
Diffraction happens when a wave (mechanical or electromagnetic wave) meets an obstacle or a slit . When this occurs, the wave bends around the corners of the obstacle or passes through the opening of the slit that acts as an obstacle.
Hence, the correct option is D:
<h3>In order to demonstrate the interference of light waves, the light source emits rays of light, which <u>diffract</u> towards the double slit.</h3>
Considering that the grasshopper starts on the ground and lands on the ground, there is no change in elevation. The range of the grasshopper is given by: <span>R=<span><span><span>v2</span>sin2θ</span>g</span></span>
If we now take the information that this is a maximal distance, the maximum range is given when the angle of launch is 45 degrees. This yields the equation: <span><span>R<span>max</span></span>=<span><span>v2</span>g</span></span>
We know R_max=0.4 m and g=9.8 m/s^2, so we can solve for v: <span>v=1.98m/s</span>
We are asked for the horizontal component, which by trigonometry is: <span><span>vx</span>=vcosθ</span>
We again take our angle of launch as 45 degrees and arrive at: <span><span><span>vx</span>=1.40m/s</span></span>
Answer:
397.5K
Explanation:
Given parameters:
Initial volume = 2.35L
Final temperature = 23°C
Final volume = 1.75L
Unknown:
Initial temperature = ?
Solution:
The Charles's law states that "the volume of a fixed mass(mole) of a gas varies directly as its absolute temperature if the pressure is constant".
Mathematically;
where V₁ is the initial volume
T₁ is the initial temperature
V₂ is the final volume
T₂ is the final temperature
we need to convert °C to Kelvin;
23°C; 273 + 23 = 296K
T₁ = 397.5K
In energy production, possible sources are fossil fuels like coal, petroleum and natural gas. Other sources are renewable like hydro, solar and wind. Radioactive elements are also possible sources for nuclear energy. However, energy will always dissipate. Industries could never get 100% of the energy from their sources. In ideal cases like the Carnot engine, we can only get 60% of the energy. That is ideal. In actual, we get even lesser than this for about 40%.
When the efficiency is 60%, the used energy is 60%, while the wasted energy is 40%. Therefore, the wasted energy is
1000 BTU (0.40) - 400 BTU
The waste energy in the form of electricity is 400 BTU.