Answer:u=-22 m/s
Explanation:
Given
mass of puck
Average force
time of contact
puck leaves with a velocity of
We know impulse is
therefore
Final momentum
Impulse on the ball
Impulse
Initial velocity is given by
i.e. initially ball is moving towards -x-axis
An emission spectrum that consists of a continuum of wavelenths
I will explain it with two figures. So, the law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as system's mass cannot change, so quantity cannot be added nor removed. As shown in Figure 1, the system S1 is closed. Both a) and b) have the same quantity of mass. The only thing is happening here is a mass and energy transfer.
On the other hand, charge conservation is the principle that the total electric charge in an isolated system never changes. The net quantity of electric charge, the amount of positive charge minus the amount of negative charge in the universe, is always conserved. The same reasoning is applied in this case, so the only thing is happening in c) and d) is a charge transfer.
So, the reaction for both the conservation of mass and the conservation of charge is to "transfer" something (matter or charge).
Yes that's correct. Also zeros in between non-zero numbers are significant figures
Answer:
3×10^6
Explanation:
frequency is the speed of light ( c) which is a constant number divided the wavelength
f = 3×10^6 / 1.0