Answer:
Wavelength of the x rays is 
Explanation:
It is given that,
The inter planer spacing between the crystal planes, 
The first-order maximum in the Bragg reflection occurs when the incident and reflected x rays make an angle of 39.4 degrees with the crystal planes. According to the Bragg's condition, the first-order maximum is given by :
n = 1
So, the wavelength of the x rays is 
. Hence, this is the required solution.
Distance travel = 400km
Time it took to travel 400km = 5 hr
Average speed = (distance travel)/(Time for that travel)
s = 400km/5h = 80km/hr
The average speed is 80km/hr.
To solve for this we need to use the formula P = W/T (Power = Work/Time).
Since we do not have time, we shall switch up the formula.
Our new formula is T = W/P (Time = Work/Power).
We have 1,800,000 J of work, and 15,000 W of power.
1,800,000/15,000 = 120.
It will take 120 (insert measure of time here).
I hope this helps!
Answer: 96 m/s
Explanation:
Given information
Acceleration of rocket = 24 m/s2
Distance travelled by rocket = 192 meters.
To be calculated
Velocity of rocket at 192 meters = ?
Using 2nd equation of motion, the difference of square of final and initial velocity is equal to the 2 times the product of acceleration and distance.
v2 – u2 = 2as
v2 – 0 = 2 * 24 * 192 (intial velocity is 0, so u = 0)
v2 = 9216
v =
v = 96 m/s
