Answer:
They are known as isotopes
According to newton's 3rd law of motion,
For every action, there is equal and opposite reaction. So if we move a body against a rough surface, there were be reaction against the force applied.
So using conservation of energy, we know:
Work done to move a body = Work done against Friction
So, Force applied * distance moved = coefficient of Friction * Normal Reaction * distance moved
For a body moving against a normal surface, Normal Reaction (R) = mg
or, mass * acceleration * distance (s) = ∪ * R * distance(s)
or, mass * (v^2/2s) = ∪ * mass * gravity
Now, s = stopping distance = v²/ 2∪g
so, using given value,∪=0.05,
s = v2/2*0.05*g
We know, g = 10, so s = v²/(2*0.05*10) = v²
where v = initial velocity
Answer:
Gravity
Explanation:
Lets take the mass of the pendulum = m
Angle from vertical axis = θ
From the diagram
The gravity force mg have two component ,First one mg cosθ and other one is mg sinθ.
The component of gravity force mg sinθ is responsible for the motion of the pendulum ,that is why gravity does work in the pendulum.
Therefore the answer is -
Gravity
The time of motion of ball A before they collide is 5.1 seconds.
<h3>
Time of motion</h3>
The two balls will collide at a time "t" when they attain a certain height "h".
<h3>The equation of motion</h3>
The equation of motion of the two balls is given as follows;
<em />
<em>when they collide;</em>
- A would have traveled, (t + 4) seconds
- B would have traveled t seconds
Thus, the time of motion of ball A before they collide is (1.1 + 4) = 5.1 seconds.
Learn more about time of motion here: brainly.com/question/2364404
Answer:
450 Bq, 0.15325u
Explanation:
Half life equation:
A = A₀ (½)^(t / T)
A = (7200 Bq) (½)^(22 min / 5.50 min)
A = 450 Bq
Mass defect is the difference between the sum of the proton and neutron masses and the isotope mass.
The mass of a proton is 1.007276u, and the mass of a neutron is 1.008665u.
So the mass defect is:
(8 × 1.007276u + 10 × 1.008665u) − 17.99161u
0.15325u
