The radioactive decay is shown in the image attached to this answer
Answer:
Alpha
Explanation:
An alpha decay is said to have occurred when the mass number of the daughter nucleus decreases by four units and the atomic number of the daughter nucleus decreases by two units.
If we look at the equation from left to right, we will notice that the mass number of the daughter nucleus decreased by four units and the atomic of the daughter nucleus number by two units compared to that of the parent nucleus leading to the emission of an alpha particle.
Work done by a given force is given by
here on sled two forces will do work
1. Applied force by Max
2. Frictional force due to ground
Now by force diagram of sled we can see the angle of force and displacement
work done by Max =
Now similarly work done by frictional force
Now total work done on sled
Answer:
The speed of the package of mass m right before the collision
Their common speed after the collision
Height achieved by the package of mass m when it rebounds
Explanation:
Have a look to the diagrams attached below.
a.To find the speed of the package of mass m right before collision we have to use law of conservation of energy.
where is Kinetic energy and
is Potential energy.
and
Considering the fact we will plug out he values of the given terms.
So
Keypoints:
<u>KE = Kinetic Energy and PE = Potential Energy</u>
b.Now when the package stick together there momentum is conserved.
Using law of conservation of momentum.
where
.
Plugging the values we have
Cancelling m from both sides and dividing 3 on both sides.
Law of conservation of energy will be followed over here.
c.Now the collision is perfectly elastic
We have to find the value of for m mass.
As here we can use that if both are moving in right ward with
then there is a
velocity when they have to move leftward.
The best option is to use the formulas given in third slide to calculate final velocity of object .
So
Now using law of conservation of energy.
The linear momentum is conserved before and after this perfectly elastic collision.
So for part a we have the speed for part b we have their common speed
and for part c we have the rebound height
.
Answer:
Constructive Interference
Explanation:
Constructive Interference occurs when two waves superimpose and make bigger amplitudes.
In constructive interference, the crests of one wave fall on the crests of second wave and the amplitudes add up. The amplitude of the resultant wave is equal to sum of the amplitude of the individual waves. Similarly, the trough of first wave falls on the trough of other wave and they superimpose to create the trough of the resultant wave.
For Example, In the attachment, two waves A and B superimpose and demonstrate Constructive interference to create the wave C.
