Scientific notation is a method of expressing very small and very large numbers * yes No
1 answer:
You might be interested in
Answer:
Explanation:
The cross product of two vectors is given by
Where, θ be the angle between the two vectors and \widehat{n} be the unit vector along the direction of cross product of two vectors.
Here, K x i = - j
As K is the unit vector along Z axis, i is the unit vector along X axis and j be the unit vector along axis.
The direction of cross product of two vectors is given by the right hand palm rule.
So, k x i = j
j x i = - k
- j x k = - i
i x i = 0
Answer:
the number of photons of yellow light does the lamp generate in 1.0 s is 7 x
Explanation:
given information:
power, P = 25 W
wavelength. λ - 580 nm = 5.80 x m
time, t = 1 s
to calculate the number of photon(N), we use the following equation
N = λPt/hc
where
λ = wavelength (m)
P = power (W)
t = time interval (s)
h = Planck's constant (6.23 x Js)
c = light's velocity (3 x )
So,
N = λPt/hc
= (5.80 x )(25)(1)/(6.23 x
)(3 x
)
= 7 x