Kinetic energy in the faster car is way too uzi fast to be stopped faster since it has less kodak potential energy. The slower car has more potential energy so it will be able to lil stop boat at a much smoother and shorter distance.
Answer:
Speed of light in the glass
Explanation:
In this question we have given
angle of polaization,p=
we have to find the speed of light in the glass,v=?
We know that, refractive index of glass can be determined by following formula
................(1)
here,
c- speed of light in air
v-speed of light in glass
we also know according to brewester's law refrective index of glass is given as
n=tanp......................(2)
here p-angle of polarization
From equation (1) and equation (2)
we got
put value of c= and p= in equation 3
we got
Answer:
The pressure of the air molecules inside the pen cap increases and the volume occupied by the air decreases such that the combined volume occupied by the pen cap and the air volume reduces while the combined mass of the pen cap and the air molecules remain the same
Given that density = The mass/Volume, we have that the density varies inversely as the volume, and as the volume reduces, the density increases
Upon squeezing, therefore, as the new combined density of the pen cap and the air molecules rises to more than the density of the water in the bottle, then, the pen cap air molecule is relatively more denser than the water, which will result in the pen cap sinking to the bottom of the bottle
Explanation:
Answer:
346.01 × 10² Lux
Explanation:
Given:
luminance of the sun at zenith at sea level, Ls = 1600 × 10 cd/m²
The diameter of the sun's photosphere = 8.64 × 10 miles = 45.62 × 10⁸ ft
or
Radius, r =
or
r = 22.81 × 10⁸ ft
The distance from the sun to the earth = 92.9 × 10 miles = 49.05 x 10¹⁰ ft
Now,
Lumen = Luminance × 4πr²
or
Lumen = 1600 × 10 cd/m² × 4πr² .....................(1)
also,
Illumination =
on substituting lumen from 1
Illumination =
or
Illumination =
or
Illumination = 346.01 × 10² Lux
Answer:
10ms⁻¹
Explanation:
Simply we can consider a motion equation
V = U + a*t
- v - final velocity
- u - initial velocity
- a-acceleration
- t - time
since in upward motion velocity decreases ,
amount of velocity decreased = u-v
V=U -gt ( g =10ms⁻² downwards)
u-v =10*1 ms⁻¹
decreased amount of velocity in a second = 10ms⁻¹