Answer:
D. 2JK3 + 3L2M --> 6LK + J2M3
Explanation:
Answer:
Velocity will be 
Explanation:
We have given mass of alpha particle m = 4 u 
Charge on alpha particle 
Charge on thorium particle 
Diameter is given as d = 15 fm
So radius 
Potential energy is given by 
From energy conservation 


Answer: These apparent star tracks are in fact not due to the stars moving, but to the rotational motion of the Earth. As the Earth rotates with an axis that is pointed in the direction of the North Star, stars appear to move from east to west in the sky.
Explanation: why do the star constellations seem to move across the sky
Give me some answer choices and i will be happy to help
Explanation:
It is given that,
Work done, W = 240 J
Heat removed, Q = 610 J
(a) The refrigerator's coefficient of performance is given by :


COF = 2.54
(b) Let Q' is the heat per cycle is exhausted to the kitchen. It is given by :
Q' = Q + W
Q' = 610 + 240
Q' = 850 J
Hence, this is the required solution.