Answer: The chemical energy of reactants is greater than the chemical energy of products.
Explanation: In the given reaction
It can be seen that the energy has been released. Thus we can say that reactants have converted to products by release of energy. Thus energy of products is less as compared to energy of reactants as some of the energy has been released.
Answer:
-39.2m/s
Explanation:
Given that :
t = 4secs
g = -9.8m/s^2
v = ?
u = 0m/s ( since it was at rest )
V = u +at............. 1
Where v is the final velocity
a = -g = -9.8m/s^2 since the ball was dropped from a height which will eventually make it move against gravity
t = 4secs
Substitute the values into 1
v = 0 - 9.8×4
v = -39.2m/s
Answer:
Thus, the change in the weight of the person is 1.6N , option c is correct.
Explanation:
F=ma=kg*m/s^2=N
Work=W=Force*d=N*m
P=W/time=N*m/s=kg*m^2/s^3=kg*m^2*s^-3=Watt
So 1 Watt of Power is equivalent to (kg*m^2)/s^3 or kg*m^2*s^-3
Any questions please feel free to ask. Thank you
Answer:
The digestive system provides nutrients to the body by breaking down food.
