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3 years ago

A 2.29N force is applied to the plunger of a hypodermicneedle.

Physics

1 answer:

Ede4ka [16]3 years ago

6 0

Answer:

0.04651 N

Explanation:

$F_1$ = Force on plunger = 2.29 N

$d_1$ = Diameter of plunger = 1.27 cm

$d_2$ = Diameter of needle = 0.181 cm

$F_2$ = Force on needle

From Pascal's law we have

$\dfrac{F_1}{A_1}=\dfrac{F_2}{A_2}\\\Rightarrow F_2=\dfrac{F_1\times A_2}{A_1}\\\Rightarrow F_2=\dfrac{2.29\times \pi\dfrac{0.181^2}{4}}{\dfrac{\pi 1.27^2}{4}}\\\Rightarrow F_2=0.04651\ N$

The force with which the fluid leaves the needle is 0.04651 N

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3 years ago

From the top of a cliff, a person uses a slingshot to fire a pebble straight downward, which is the negative direction. The init

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4 years ago

A gas has an initial volume of 212 cm3 at a temperature of 293 K and a pressure of 0.98 atm. What is the final pressure of the g

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4 years ago

In example 18. 4 of the text, the deflection angle of the laser beam as it exits the prism is 22. 6º. If the prism had been made

Marrrta [24]

The deflection angle is 37.29º if the prism was made of polystyrene plastic.

What is a laser beam?

Laser beam is a light beam propagating dominantly in one direction.

It is a beam of radiation produced from a laser.

Here given that,

refraction index of glass, n1= 1.52

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deflection angle, B = 22.6º

For the second surface,

B = 45º - 22.6º

B = 22.40º

Now from the formula of Snell's law:

n1 sinФ = n2 sin B

sin B / sinФ = n1 / n2

sinФ = (sin 22.40º) * ( 1/ 1.59)

Ф = 37.29º

Hence,

The deflection angle is 37.29º if the prism was made of polystyrene plastic.

Learn more about laser beam here:

<u>brainly.com/question/4218151</u>

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2 years ago

A metal wire of resistance 48 ???? is cut into four equal pieces that are then connected side by side to make a new wire that is

jeka57 [31]

Answer:

Explanation:

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As we know that the resistance is directly proportional to the length of the wire.

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3 years ago