Answer:
1.c,2.c,3.a,4.d
Explanation:
the following answer are listed with there number
Increasing the mass of an object increases its momentum.
Explanation:
- Momentum of an object is measured as the quantity of motion done by the object.
- It is calculated using the formula, p = m × v where m is mass of the object and v is the velocity of the object.
- As momentum and mass vary proportionally, as seen in the formula, increasing the mass of an object will also increase its momentum.
It is fine to use the equation given by Plitter, since we are told that the mass is about the same as it is now, and I seriously doubt the original question wants the student to go into relativistic effects, electron degeneracy pressure and magnetic effects that govern a real white dwarf star.
There is no need to make it unnecessarily complicated, when the question is set at high school level. The question asks, given a particular radius, and a given mass, what will the density be (which in this case will be the average density). To answer the question, one needs to know the mass of the sun (which is about 2×1030 Kg. One needs to convert the diameter to a radius, and then calculate the spherical volume of the white dwarf. Then one can use the formula given above, namely density=mass/volume
Y, bc the height of the bounce back is higher than x
Answer:
force experienced by A and B are equal and opposite, that is total momentum before collision is equal to total momentum after collision if no external forces act on them which proves the principle of conservation of linear momentum.
