Answer:
8 ms⁻¹
Explanation:
Kinetic energy is the energy possessed by a moving object solely due to its motion.
You can get the K.E. of an object using the equation,
K.E. = (1/2)mv²
So you get, for lorry,
K.E. = (1/2)4000×4² -----------(1)
for car,
K.E. = (1/2)1000×v²---------------(2)
(1)=(2)
(1/2)4000×4² = (1/2)1000×v²
y these two equations, we get, v = 8 ms⁻¹
Answer:
C) If an ice cube is placed into a boiling water, then it will melt in less than 2 minutes.
Explanation:
Propose a unique explanation
Answer: its better to use parallel because, in parallel connection there will be more advantages than a series connection. and also the electronic devices are wired in series so thats why you should use parralel in house wiring
so its c.
because the parallel is wired through the whole house so if one of the circuits fail youŕe not screwed
Explanation:
Answer:
Wavelength = 0.15 nm
Frequency =
Explanation:
We have given photon energy E = 8 KeV = 8000 eV
In question it is given that
So
Plank's constant
We know that photon energy is given by
So
Now wavelength