Answer:
r = -11.6 cm
Explanation:
As we know that the position of center of mass is given as
now we know that three masses are on the left while two are on the right
position of left most mass with respect to the center of the rod is given as
Now we will have
Answer:
4m/s approx
Explanation:
Step one
Given data
m1=71kg
m2=65kg
v1=3.4m/s
v2=??
We are required to find the Velocity of the second person
By applying the conservation of momentum principles
P=mv
m1v1=m2v2
Substitute
71*3.4=61*v2
241.4=61v2
Divide both sides by 61
v2=3.95m/s
v2=4m/s approx
Answer:4.39 s
Explanation:
Given
initial velocity
acceleration
velocity acquired by sled in time
distance traveled by sled in
distance traveled in time with velocity
----1
substitute the value of in 1
we get
thus
For part a)
Since the conical surface is not exposed to the radiation coming from the walls only from the circular plate and assuming steady state, the temperature of the conical surface is also equal to the temperature of the circular plate. T2 = 600 K
For part b)
To maintain the temperature of the circular plate, the power required would be calculated using:
Q = Aσ(T₁⁴ - Tw⁴)
Q = π(500x10^-3)²/4 (5.67x10^-8)(600⁴ - 300⁴)
Q = 5410.65 W