Answer:
(a) 0.833 j
(b) 2.497 j
(c) 4.1625 j
(d) 4.995 watt
Explanation:
We have given force F = 5 N
Mass of the body m = 15 kg
So acceleration
As the body starts from rest so initial velocity u = 0 m/sec
(a) From second equation of motion
For t = 1 sec
We know that work done W =force × distance = 5×0.1666 =0.833 j
(b) For t = 2 sec
We know that work done W =force × distance = 5×0.666 =3.33 j
So work done in second second = 3.33-0.833 = 2.497 j
(c) For t = 3 sec
We know that work done W =force × distance = 5×1.4985 =7.4925 j
So work done in third second = 7.4925 - 2.497 -0.833 = 4.1625 j
(d) Velocity at the end of third second v = u+at
So v = 0+0.333×3 = 0.999 m /sec
We know that power P = force × velocity
So power = 5× 0.999 = 4.995 watt
Answer:
I think milligram is the correct answer.
Answer:
B. 4.29s
Explanation:
If the man appears to move 12.4m/s when the boat appears to move 11m/s, it means that the man moves 1.4m on the boat (12.4-11=1.4). So if the man moves 1.4m per second then it will take him 6/1.4=4.29s to move 6 m relative to the boat.
Hope this helped!
A baryon is a particle consisting of three quarks or three antiquarks.
In order to form a neutral baryon (such as the neutron, which has electric charge zero), we must have two quarks with charge
(down, strange or bottom quark), and one quark with charge
(up, charm or top quark), so that the total charge will be zero:
A second possibility is to have a neutral baryon consisting of three antiquarks, of which two of them have charges
(anti-down, anti-strange or anti-bottom), and one of them has charge
(anti-up, anti-charm or anti-top), so that the total charge is still zero:
Answer:
it means match the correct words