in situations involving equal masses, chemical reactions produce less energy than nuclear reactions.
Answer:
v= 3.18 m/s
Explanation:
Given that
m= 150 g = 0.15 kg
M= 240 g = 0.24 kg
Angular speed ,ω = 150 rpm
The speed in rad/s


ω = 15.7 rad/s
The distance of center of mass from 150 g

r= 20.30 cm
The speed of the mass 150 g
v= ω r
v= 20.30 x 15.7 cm/s
v= 318.71 cm/s
v= 3.18 m/s
Answer:
B. between carbon and oxygen
Explanation:
formaldehyde has a carbon atom that has single bonds with two hydrogen atoms on both sides, and it has a double bond with oxygen.
Answer:
option D
Explanation:
given,
angular speed of the fan = 120 rev/min
time = 20 sec
After 40 s fan comes to rest
ration angular acceleration of the first 20 s to last 40 s.
angular acceleration for first 20 s



for last 40 s



now, ratio


hence, the correct answer is option D