Answer:
72 kilometres per hour
Explanation:
The formula for calculating speed is distance/time.
So to work this out you would convert 2 minutes into hours. You would divide 2 by 60 to convert it into hours. This is because the standard unit for speed with kilometres is kilometres per hour. Then you would divide 2.4 by that.
1)Divide 2 by 60:
2) Divide 2.4 by 0.0333333.
3) Round it.
Answer:
Explanation:
Given that,
Frequency of a radio antenna is 1 MHz
Power, P = 21 kW
We need to find the the waves intensity 25 km from the antenna . The object emits intenisty evenly in all direction. It can be given by :
So, the wave intensity 25 km from the antenna is .
Explanation:
When bullet is shot towards the monkey then let say the distance of monkey from the bullet is "d"
so we can find the time to reach the bullet to the monkey
Now similarly we can find the vertical displacement of the bullet in the same time
so it is given as
here if the monkey is initially at height H above the ground at given angle then we can say
so we can say that
So if at the same time monkey will fall down then the height of monkey from ground after time "t" is given as
so here bullet will hit the monkey as both monkey and bullet are at same position.