A 8.0 cm-diameter horizontal pipe gradually narrows to 4.5 cm. When water flows through this pipe at a certain rate, the gauge p
1 answer:
Answer:
7.11x10^-3
Explanation:
We are to get the volume rate of flows
1/2pv1² + pl = 1/2pv2²
Such that A1V1 = A2V2
V1 = A2V2/A1
From the attachment I uploaded, we have a formula named equation 1 from which I have plugged in these values
P2 = 33000
P2 = 24000
P = 1000
r2 = 2.25
r1 = 4
When we put these values into the equation,
V2 = 4.47
A2V2 = pi(0.0225)²x4.47
= 7.7x19^-3m³/s
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Answer:
Option B
Explanation:
Option B
Explanation:
Here in all nuclear reactions we can say that mass conservation and charge conservation is always true
Here iron nuclei smashed into lead nuclei and then a new nuclei will form which will released along with a neutron
Now in this reaction mass and charge will remain conserved
mass number of iron + mass number of lead = mass number of new nuclei + mass number of neutron
58 + 208 = x + 1
x = 265
so the new nuclei formed will have mass number A = 265
now we will use charge conservation
Number of protons in iron + number of protons in lead = number of protons in new nuclei + number of protons in neutron
26 + 82 = z + 0
z = 108
so the new nuclei will form with atomic number z = 108 and mass number A = 265
If we refer periodic table to find such atom we will see that this is
so the new nuclei formed is
Answer:
a) W = 5360 J b) μ = 0.29
Explanation:
a) The work is, bold indicate vectors
W = F. d = F d cos T
W = 40 268 cos 60
W = 5360 J
b) The force of friction and opposes the movement of the body and if the speed of the body is constant implies that the external force in the direction of the movement is equal to the force of friction, or which work is the same
= -5360J
The negative sign is because the force of friction is contrary to the direction of movement
c) Let's write the work of the friction force
= fr d cos 180
fr = μ N
Since the body is on a horizontal surface, from Newton's second law on the Y axis
N-W = 0
N = W
fr = μ W
= - μ W d
μ = - / W d
μ = - (-5360) / 69 268
μ = 0.29