Answer:
Because nuclear decay releases ionizing radiation (alpha, beta, and gamma radiation) we call such compounds radioactive.
Explanation:
Explanation:
F = m a
F= 4.0×4.0
F= 16 N
......................................................................................................
F= ma
25= m × 4.998
m= 25/4.998
m= 5.002 kg
......................................................................................................
F=ma
53= 3 × a
a= 53/3
a= 17.666 m/s
Answer:
The atomic number of phosphorus is 15.
Explanation:
It’s found after Si(Silicon) and before S(sulphur)
Answer:

Explanation:
Since we know that two sphere is oppositely charged so net electric field at the mid point of two balls will be sum of the electric field due to each ball at the mid point
So we know that

here we know that



so we have


Answer:
0.13451 m
0.124196 m
0.119997901132 m
Explanation:
= Velocity of the observer
= Velocity of sound source
v = Velocity of sound in air = 343 m/s
Wavelength is given by

The wavelength is 0.13451 m
From Doppler effect we have the formula


The wavelength is 0.124196 m


The wavelength is 0.119997901132 m