Answer:
<h2>workdone = force × distance </h2><h2>236J = 18.9cos(o) × 24.4</h2><h2>236/24.4 = 18.9cos(o)</h2><h2>(0.5117)cos^-1 = (o)</h2><h2><u>59.21°</u></h2>
Answer:
<h2>250 m/s</h2>
Explanation:
The speed of the car can be found by using the formula
<h2>v = a × t</h2>
where
a is the acceleration
v is the speed
t is the time
From the question we have
v = 10 × 25
We have the final answer as
<h3>250 m/s</h3>
Hope this helps you
Answer:
<h3>The answer is 53.27 mi/hr</h3>
Explanation:
To find the velocity covered by the car we use the formula

where
d is the distance
t is the time
From the question
d = 554 miles
t = 10.4 hrs
We have

We have the final answer as
<h3>53.27 mi/hr</h3>
Hope this helps you
Explanation:
10km/h = 10×10/36=25/9m/sec
160km/h= 160×10/36=400/9
v=a×t
t=v/a
t=(400/9-25/9)/5
t=(125/3)/5=25/3=

Answer:
Miller index:
This is the set of number which is used to define the position of face any crystal.We know that crystal plane is the plane where large number of molecule are present inside this plane.
Lets take r is the vector which is passing through the origin of lattice
r = a i + b j + c k
So the intercept on the plane x is a unit ,on the y plane is b unit and on the z plane is c unit.
Now when we take the reciprocal of these intercept we get 1/a, 1/b , and 1/c.These reciprocal of intercept is know as Miller index.