Technician A says that outer tie rod ends should be replaced in pairs, even if only one is worn. Technician B says that inner ti
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Answer:
The magnitude of the velocities of the two balls after the collision is 3.1 m/s (each one).
Explanation:
We can find the velocity of the two balls after the collision by conservation of linear momentum and energy:
Where:
m₁: is the mass of the ball 1 = 100 g = 0.1 kg
m₂: is the mass of the ball 2 = 300 g = 0.3 kg
: is the initial velocity of the ball 1 = 6.20 m/s
: is the initial velocity of the ball 2 = 0 (it is at rest)
: is the final velocity of the ball 1 =?
: is the initial velocity of the ball 2 =?
(1)
Now, by conservation of kinetic energy (since they collide elastically):
(2)
By entering equation (1) into (2) we have:
By solving the above equation for :
Now, can be calculated with equation (1):
The minus sign of means that the ball 1 (100g) is moving in the negative x-direction after the collision.
Therefore, the magnitude of the velocities of the two balls after the collision is 3.1 m/s (each one).
I hope it helps you!
66.7 Watts
Explanation:
Let ohms,
ohms and
ohms. Since
and
are in parallel, their combined resistance
is given by
or
The total current flowing through the circuit <em>I</em> is given
where
Therefore, the total current through the circuit is
In order to find the voltage drop across the 6-ohm resistor, we first need to find the voltage drop across the 1-ohm resistor :
This means that voltage drop across the 6-ohm resistor is 20 V. The power dissipated <em>P</em> by the 6-ohm resitor is given by
Terminal speed=136.7 m/s
the formula for the terminal speed is given by :
V=
m= mass=75 kg
a= area=0.2 x 0.4=0.08 m²
ρ= density of air=1.23 kg/m³
C= drag constant =0.8
so V=
v= 136.7 m/s