Answer:
608.4m/s
Explanation:
We are given that
Mass of Sleigh,M=1200 kg
Speed of Sleigh,u=322 m/s
Speed of jet,u'=680 m/s
Mass of jet,m=4800 kg
Total mass=M+m=1200+4800=6000 kg
We have to find the final velocity of the two objects after the collision.
The collision is inelastic .
By using law of conservation of momentum
Using the formula
Hence, the final velocity of two objects after the collision=608.4m/s
c is physical ie not chemical reaction ...
mass cannot be created or destroyed. in chem reaction, mass before reaction = total mass after. that would incl any gas
water. find the mass of, say, 100cc. divde the mass by the volume.
water = 1000kg/cubic metre. a lot of water ...
Answer:
Explanation:
q1 = q2 = e = 1.6 x 10^-19 C
d = 2.7 x 10^-15 m
1. Work done is equal to the potential energy stored between the two charges.
The formula for the potential energy is given by
By substituting the values
U = 8.53 x 10^-14 J
So, the work done is 8.53 x 10^-14 J.
(2) d = 2 x 2.7 x 10^-15 m = 5.4 x 10^-15 m
So, the potential energy is
By substituting the values
U = 4.27 x 10^-14 J
(3) mass, m = 1 u = 1.67 x 10^-27 kg
So, the kinetic energy is equal to the potential energy.
Let v be the velocity.
v = 7.14 x 10^6 m/s
Answer:
dd=4.3 ly=4.3 •9.46•10°15 m=4.1 10°16m.
Explanation: