Answer:
214.3 x 10⁻⁹ m or 214.3 nm
Explanation:
= slit separation in the experiment = 3.00 x 10⁻⁵ m
= screen distance from the slits = 2.00 m
= Order of the bright fringe = 7
λ = Wavelength of the light
= distance of the bright fringe from the central bright fringe = 10 cm = 0.10 m
Position of the bright fringe is given as
λ = 214.3 x 10⁻⁹ m
λ = 214.3 nm
Answer: 7 kg bowling ball must move with a speed of 2.8 m/s so that it has the same kinetic energy.
Explanation:
Kinetic energy is the energy possessed by a body by virtue of its motion.
m = mass of object
v= velocity of the object
b) for a 7 kg bowl to have kinetic energy of 27 Joules:
Thus 7 kg bowling ball must move with a speed of 2.8 m/s so that it has the same kinetic energy
<h2>
Time taken is 0.459 seconds</h2>
Explanation:
We have equation of motion v = u + at
Initial velocity, u = 0 m/s
Final velocity, v = 81 km/hr = 22.5 m/s
Time, t = ?
Acceleration, a = 49 m/s²
Substituting
v = u + at
22.5 = 0 + 49 x t
t = 0.459 seconds
Time taken is 0.459 seconds
4. No motion
5. Threre will be movement in one direction or another