The three states of matter are solid, liquid, and gas.
In a solid, particles are aligned into crystal shapes that are lock.
In a liquid, particles move around, and moves even faster in a gas.
The ratio of output power to input power is called efficiency. There is no reason that efficiency must be expressed in percent. It can be a fraction a decimal or a ratio.
Answer:
75.19 nm
Explanation:
Condition of constructive interference of the light reflecting from the top of the thin film.
m=1,2,3...
d= thickness of the film
n= refractive index of film
λ= wavelength of the light incident on the film.
for the longest central maximum interference, m=1
⇒
⇒
nm
similarly, for the same order of reflection the thickness of the film=d'
and wavelength of constructive interference= λ'=400 nm
n=1.33
⇒
= 75.19 nm
Answer:
260 km
65 km/hr
Explanation:
The displacement of an object is the distance moved by that object in a particular direction.
velocity = displacement / time, therefore,
Displacement = velocity * time.
Total displacement for the 4 HR trip = displacement for 2.5 hr + displacement for 1.5 hr
total displacement = (80 * 2.5) + (40 * 1.5)
Total displacement = 200 + 60
Total displacement = 260 Km
average velocity for the total trip = total displacement / total time taken
average velocity = 260 km/ 4 hr
average velocity = 65 km/hr
<span>Density is 3.4x10^18 kg/m^3
Dime weighs 1.5x10^12 pounds
The definition of density is simply mass per volume. So let's divide the mass of the neutron star by its volume. First, we need to determine the volume. Assuming the neutron star is a sphere, the volume will be 4/3 pi r^3, so
4/3 pi 1.9x10^3
= 4/3 pi 6.859x10^3 m^3
= 2.873x10^10 m^3
Now divide the mass by the volume
9.9x10^28 kg / 2.873x10^10 m^3 = 3.44588x10^18 kg/m^3
Since we only have 2 significant digits in our data, round to 2 significant digits, giving 3.4x10^18 kg/m^3
Now to figure out how much the dime weighs, just multiply by the volume of the dime.
3.4x10^18 kg/m^3 * 2.0x10^-7 m^3 = 6.8x10^11 kg
And to convert from kg to lbs, multiply by 2.20462, so
6.8x10^11 kg * 2.20462 lb/kg = 1.5x10^12 lb</span>
