Efficiency = 45J/120J = 0.375
Or
0.375 * 100% = 37.5 %
Answer:Kung Bushmen teach their children not to be violent? Creating a culture that chooses non-violence with intention ... Kung case, parents are not likely to reach the point of abusing their children, but in the unlikely event that someone did .
Explanation:May i plz have brainlist only if u wanna give me brainlist though have an nice day!
Answer:
Time=3.1 seconds
Explanation:
Given data
Distance S=20 m
Velocity v=10×Sin60°
To find
Time after release
Solution
From equation of simple motion we know that
Using the convention that down is positive then
Apply Quadratic formula to solve t
Ignoring the -ve root then we have
t=3.1 seconds
Answer:
vcannon = 11.42 [m/s]
Explanation:
To solve this problem we must use the principle of conservation of linear momentum which tells us that the momentum of the cannon ball is conserved before and after shooting.
This is at the time of the shot we have two movements, that of the cannon ball moving to the East, while the cannon moves to the left due to the reaction caused by the explosion.
where:
mcannon = mass of the cannon = 700 [kg]
vcannon = velocity of the cannon [m/s]
mcannonball = 20 [kg]
vcannonball = 400 [m/s]
Now replacing: