I think the answer would be that mirrors reflect and lenses transmit. i hope this was helpful!
Answer:
15 grams
Explanation:
9 sugar cubes + 2 teaspoons of baking soda + 2 grams of the sugar cubes each + 3 grams of baking soda = 15g.
You have a parallel circuit since it allows the electrons to travel in 2 paths, allowing the other light to stay lit.
Answer:
The radius of the loop is 20.66 km
Explanation:
let the radius of the loop be r
mass of airplane is m
At the top, the pilot experiences two radial forces, which are
1) Gravitational force is mg
2) Centrifugal forces mv²/r out of the center
When the pilot experiences no weight,
then, mg = mv²/r
r = v² / g
= 450² / 9.8
= 20.66 x 10³3
= 20.66 km
Answer:
10.03 s is the time the decoy is in the air
Explanation:
From the information given we know:
because is measured clockwise from horizontal.
- The initial speed of the decoy is the plane's speed at the moment of release
![v_{0}=290 \:\frac{km}{h}](https://tex.z-dn.net/?f=v_%7B0%7D%3D290%20%5C%3A%5Cfrac%7Bkm%7D%7Bh%7D)
We will need to work in meters and m/s, so ![290 \:\frac{km}{h} \cdot \frac{1000 \:m}{km} \cdot \frac{1\:h}{3600\:s} = 80.56 \:\frac{m}{s}](https://tex.z-dn.net/?f=290%20%5C%3A%5Cfrac%7Bkm%7D%7Bh%7D%20%5Ccdot%20%5Cfrac%7B1000%20%5C%3Am%7D%7Bkm%7D%20%5Ccdot%20%5Cfrac%7B1%5C%3Ah%7D%7B3600%5C%3As%7D%20%3D%2080.56%20%5C%3A%5Cfrac%7Bm%7D%7Bs%7D)
The horizontal motion of a projectile is given by:
![x-x_{0}=v_{0x}\cdot t](https://tex.z-dn.net/?f=x-x_%7B0%7D%3Dv_%7B0x%7D%5Ccdot%20t)
because
, this becomes
![x-x_{0}=(v_0cos(\theta_{0}))\cdot t](https://tex.z-dn.net/?f=x-x_%7B0%7D%3D%28v_0cos%28%5Ctheta_%7B0%7D%29%29%5Ccdot%20t)
We have that
, solving for <em>t, </em>we have
![t=\frac{\Delta x}{v_{0}cos\theta_{0}} \\t=\frac{700 \:m}{(80.56 \:\frac{m}{s} )\cdot cos(-30)} \\t= 10.03 \:s](https://tex.z-dn.net/?f=t%3D%5Cfrac%7B%5CDelta%20x%7D%7Bv_%7B0%7Dcos%5Ctheta_%7B0%7D%7D%20%5C%5Ct%3D%5Cfrac%7B700%20%5C%3Am%7D%7B%2880.56%20%5C%3A%5Cfrac%7Bm%7D%7Bs%7D%20%29%5Ccdot%20cos%28-30%29%7D%20%5C%5Ct%3D%2010.03%20%5C%3As)