Accordingly Newton's findings, astronomy and physics have industrialized
hugely over the period. Scientists now recognize that every object in the
world has a force that draws each other and the power of the force hinge on the
mass of the object. Also, Newton's Laws of Motion offer individuals a
better understanding of what is likely concerning movement. This is very helpful,
particularly in mechanics and space travel. Generally, Newton had a
huge and permanent impact on science.
We need the frequency of the photon, it is v = c/ λ
Where c is 3 x 10^8 ms^-1 and λ
is the wave length
We also need the expression of
connecting frequency to energy of photon
which is E = hv where h is Planck’s
constant
Combining the two equations
will give us:
E = h x c/λ
Inserting the values, we will
have:
E = 6.626 x 10^-34 x 3 x 10^8 /
0.126
E = 1.578 x 10^ -24 J
Answer:Speed of sound in steel is 6510m/s.
Explanation:
Speed, v= frequency,f÷ wavelength
v=?, f= 620, wavelength= 10.5
v= 620× 10.5
= 6510m/s
The answer is C. Infrared Rays.
Answer:
Explanation:
The range of a projectile is given by the formula
where in this case, we have
d = 100 m is the range
u is the initial speed (the magnitude of the initial velocity)
g = 9.8 m/s^2 is the acceleration of gravity
is the angle of projection
Solving for u, we find:
Now we can easily find the components of the initial velocity:
So, the initial velocity of the ball is
where i and j are the unit vector indicating the horizontal and vertical direction.