Answer: its the second (B) option, n1sintheta1=n2aintheta2
theta is the thing that looks like a 0 with the across.
Explanation: I got it right
Before it reaches the ramp, the toy's kinetic energy is
(1/2) (mass) (speed²)
= (1/2) (3 kg) (16 m²/s²)
= 24 Joules .
On the way up the ramp, its kinetic energy will change to
gravitational potential energy, and it'll stop when it's height
gives it 24 joules of potential energy.
Potential energy = (mass) (gravity) (height)
24 joules = (3 kg) (9.8 m/s²) (height)
Divide each side by 29.4 kg-m/s² (that's the same as 29.4 newtons):
Height = 24 joules / 29.4 newtons
= 0.816 meter higher than the bottom of the ramp.
Answer:
Explanation:
We are given that
d=0.23 mm=
Screen is placed from the slits at distance ,L=4.75 m
The bright interference fringes on the screen are separated by 1.56 cm.
1 m=100 cm
We have to find the wavelength of laser light.
We know that
Substitute the values
C is the correct option
As momentum = (mass) (velocity)
P=mv
So the object having greater mass has less velocity and the object having smaller mass will move faster. But product of mass and velocity is same to each other.
Answer:
iam not getting about celestial roles ,here is the meaning of celestial
Explanation:
The first is something living such as an alien or an angel, whereas the latter is an inanimate object such as a star or a planet. Both, however, are from the sky. The word celestial is primarily used to describe things that have to do with the heavens such as angels, spirits, stars and planets.
