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With the help of appropriate energy level diagram, explain the working of a He-Ne laser. A He-Ne laser emits a beam of diameter 2103m and wavelength 630 nm. It is directed towards an aeroplane flying at a height of 11 km. Calculate the diameter of the light patch produced on the surface of the aeroplan
There are 400kf/min of water being handled by a pump. The lift us firm 20-m deep well and the delivery velocity ks 15m/s. Find (a) the change in potential energy, (b) kinetic energy, (c) the required power of the pumping unit; g= 9.81m/s²
What is the temperature gradient of 8.0 cal per second per cm with 210 Wk
A 40 kg slab rests on a frictionless floor. A 10 kg block rests on the top of the slab. The coefficient of static
friction is 0.6 while the coefficient of kinetic friction is 0.4. 10 kg block is acted upon by a horizontal force
F. What is the resulting acceleration of the slab if (i) F = 40 N
a ball of 0.25kg is coming with 20m/s velocity collide with bat for 1s how many newton force is apply for stop the ball
5. Obtain the value of P3 (x) using Rodrigues' formula
Pn(x) = 1/(2n)n! x dn/dxn *(x2-1)n
A person riding a bicycle is going uphill at 8 m/s. What is the kinetic energy of the system if the total mass of the person and his bicycle is 10.0 kg?
if velocity varies with time in quadratic manner then acceleration
A. constant
B. zero
C. linearly varying
D. varies as t^3
If velocity varies with time in quadratic manner then acceleration
A 3.00 kg rock is dropped from the top of a 12.0 m high cliff. Using the conservation of energy, find the following.
d. The gravitational potential energy after it has fallen 6.00 m.
e. The kinetic energy after it has fallen 6.00 m.
f. The gravitational potential energy just as it hits the ground.
