Answer:
<em> 25 m/s</em>
Explanation:
<em>The ball will have kinetic energy that is proportional to the energy due to the product of the charge and the potential difference.</em>
mass of the ball m = 2.0 g = 2 x kg
charge on the ball C = +0.05 C
potential difference on plates V = 12.0 V
The energy due to the electric potential difference and the charge will be
E = CV
E = 0.05 X 12 = 0.6 Joules
<em>The ball will move with a kinetic energy that is proportional to this energy calculated (due to energy conservation principle)</em>, therefore,
E = ..........which is the kinetic energy relationship where v is the velocity of the ball, substituting values in, we have
0.6 = x 2 x x
0.6 = x
600 =
v = = 24.49 ≅<em> 25 m/s</em>
Givens
d = 5m
r = 1 km/hour = [ 1000 m/1 km] * [1 hour / 3600 sec]
r = 0.2777777 ... m/s
t = ???
Formula
d = r * t
Solution
5 meters = 0.2777777 ... * t
t = 5 / 0.27777777
t = 18 seconds Answer
Answer:
a) 2.33 m/s
b) 5.21 m/s
c) 882 m³
Explanation:
Using the concept of continuity equation
for flow through pipes
Where,
A = Area of cross-section
V = Velocity of fluid at the particular cross-section
given:
a)
substituting the values in the continuity equation, we get
or
or
b)
substituting the values in the continuity equation, we get
or
or
c) we have,
Discharge
thus from the given value, we get
Also,
Discharge
given time = 1 hour = 1 ×3600 seconds
substituting the value of discharge and time in the above equation, we get
or
volume of flow =
Answer:
h/(m*c)
Explanation:
Hi!
Lets denote the units of X as [X]
Since the dimentions of h are:
If we divide [h] by the units of mass, we get:
Also we know that:
So:
Therefore
h/(mc) has dimentiosn of length
Answer:
slowing down.
Explanation:
acceleration points in the same direction as the velocity, the object will be speeding up. And if the acceleration points in the opposite direction of the velocity, the object will be slowing down