Average speed = (distance covered) / (time to cover the distance)
Average speed = (14 km) / (249 min)
Average speed = (14/249) (km/min)
Average speed = (14/249) (km/min) x (60 min/hr)
Average speed = (14 x 60 / 249) km/hr
<em>Average speed = 3.37 km/hr</em>
The primary colors of light are:
1. Green
2. Red
3.Blue
4. Yellow
5. White
6. Cyan
7. Magenta
Answer:
Explanation:
given,
weight of the man = 680 N
weight of the woman = 500 N
mass of man = 
M_m = 69.4 Kg
mass of woman
= 
M_w = 51 Kg
ratio of man's kinetic energy Km to that of the woman Kw
momentum is same
Answer:
His third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A. Notice that the forces are exerted on different objects.
Explanation:
Answer:
so height is 0.1283 m
Explanation:
given data
height = 28 cm
diameter = 11 cm
cross-sectional area = 1.55 cm2
water flow rate = 2.46×10^−4 m3/s
to find out
How high will the water in the bucket rise
solution
we know that here
potential energy = kinetic energy
mgh = 1/2 mv²
multiply both sides by the 2 and we get
2mgh=mv²
solve it we get
√(2gh) = v ....................1
h = v²/2g ...............2
and
flow rate = A V
2.46×10^−4 = V 1.55×10^−4
V = 1.5870 m/s
so from 2
h = v²/2g
h = 1.5870²/ 2(9.81)
h = 0.1283 m
so height is 0.1283 m
