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Alekssandra [29.7K]
3 years ago
7

When drawing ray diagrams involving thin lenses, how many rays (at a minimum) are needed show the image distance and magnificati

on
Physics
1 answer:
Rufina [12.5K]3 years ago
6 0

Answer:

GGG he fggfggfufbvg I Rd cbh

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How can a scientist assess whether a pure niobium sample is responsible for contaminating the lab with radioactivity
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A scientist can assess whether a pure niobium sample is responsible for contaminating the lab with radioactivity by testing the sample. By testing the niobium sample, a scientist can determine whether it has any other element.

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Water runs into a fountain, filling all the pipes, at a steady rate of 0.750 m3>s. (a) How fast will it shoot out of a hole 4
kati45 [8]

Answer:

velocity  = 472 m/s

velocity = 52.4 m/s

Explanation:

given data

steady rate = 0.750 m³/s

diameter = 4.50 cm

solution

we use here flow rate formula that is

flow rate = Area × velocity .............1

0.750 = \frac{\pi }{4} × (4.50×10^{-2})²  × velocity

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velocity  = 472 m/s

and

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0.750 = \frac{\pi }{4} × 3 ×  (4.50×10^{-2})²  × velocity

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5 0
2 years ago
Two straight wires are in parallel and carry electrical currents in opposite directions with the same magnitude of 2.0A. The dis
Veronika [31]

Answer:

Explanation:

Two straight wires

Have current in opposite direction

i1=i2=i=2Amps

Distance between two wires

r=5mm=0.005m

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Length of second wire is 0.3m

Force between the wire,

The force between two parallel currents I1 and I2, separated by a distance r, has a magnitude per unit length given by

F/l = μoi1i2/2πr

F/l=μoi²/2πr

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The force is attractive if the currents are in the same direction, repulsive if they are in opposite directions.

F/l = μoi1i2/2πr

F/0.3=4π×10^-7×2²/2π•0.005

F/0.3=1.6×10^-4

Cross multiply

F=1.6×10^-4×0.3

F=4.8×10^-5N

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3 years ago
A student stands on a bathroom scale in an elevator at rest on the 64th floor of a building. The scale reads 836 N.
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<span>A= a=99/85.3 
B= a=-54/85.3 
C=The acceleration is smaller. 
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7 0
3 years ago
Pls Help Me with this problem
Naddika [18.5K]

Answer:

explanation

Explanation:

1 = C

2 = A

3 = D

4 = E

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2 years ago
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