According to momentum conservation
15*3 = 45kgm/s
and the velocity of 5 kg mass will be
45/5 = 9 m/s
Answer:
0.25 m/s
Explanation:
From the law of conservation of momentum
Mu+ mu = Mv' + m v
M= mass of the astronaut = 80 kg
m= mass of the oxygen tank= 10 Kg
v= speedof the tank 2 m/s
u= initial velocity of the system= 0
If we substitute the values, we have
( 80× 0 )+(10×0)= [(80 x v )+ (10 x 2)]
0= 80v + 20
-20=80v
v= -0.25 m/s ( we have a negative value because the astronaut and the motion of the cylinder are in opposite direction)
Hence the velocity the astronaut start to move off into space is 0.25 m/s
Answer:
increases
Explanation:
because as when the electimagnatics coul coul starts to increase the magnetic field also increases
Answer: B, C, A
Explanation:
Electrostatic force F = kq²/d²
Let the force on A be Fa, and B be Fb and C be Fc.
For Fa, distance between A and B is d, and distance between A and C is 2d
For Fb, distance between B and A is d, and distance between B and C is d
For Fc, distance between C and B is d, and distance between C and A is 2d
Also, the charge of each charge affects the sign of the force.
Check the attachment below
ANSWER:
[i] False.
[ii] Work is the product of force and displacement.
REASONS:
[i] As we already know that temperature is a measure of the average kinetic energy of the particles in an object.
[ii] W = FS
