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3 years ago

If F(theta)=tan theta=3, find F(theta+pi)

Physics

1 answer:

Alex_Xolod [135]3 years ago

4 0

The period of the tan function is π so (∅ + π) would yield the same value as ∅
F(∅ + π) = 3

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What is the resistance of : A) A 1.70 m long copper wire that is 0.700 mm in diameter? B) A 20.0 cm long piece of carbon with a

astra-53 [7]

Answer:

(I). The resistance of the copper wire is 0.0742 Ω.

(II). The resistance of the carbon piece is 1.75 Ω.

Explanation:

Given that,

Length of copper wire = 1.70 m

Diameter = 0.700 mm

Length of carbon piece = 20.0 cm

Cross section area $A = (2.00\times10^{-3})^2\ m$

(I). We need to calculate the area of copper wire

Using formula of area

$A=\pi r^2$

$A=3.14\times(\dfrac{0.700\times10^{-3}}{2})^2$

We need to calculate the resistance

Using formula of resistance

$R=\dfrac{\rho l}{A}$

Put the value into the formula

$R=\dfrac{1.68\times10^{-8}\times1.70}{3.14\times(\dfrac{0.700\times10^{-3}}{2})^2}$

$R=0.0742\ \Omega$

(II). We need to calculate the resistance

Using formula of resistance

$R=\dfrac{\rho l}{A}$

Put the value into the formula

$R=\dfrac{3.5\times10^{-5}\times20\times10^{-2}}{(2.00\times10^{-3})^2}$

$R=1.75\ \Omega$

Hence, (I). The resistance of the copper wire is 0.0742 Ω.

(II). The resistance of the carbon piece is 1.75 Ω.

8 0

3 years ago

if a car travels 30 miles north for one half hour, 50 miles east for one hour, and 30 miles south for 30 minutes, what is the to

egoroff_w [7]

50 miles east. because the 30 miles north then south cancel each other out.

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3 years ago

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What’s the Answer for 5-8?

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6. B. 4 electrons

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3 years ago

A rock is thrown down with an initial speed of 25.3 m/s from a bridge to the water below. It takes 2.29 s for the rock to hit th

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<h2>Height of bridge is 83.66 m</h2>

Explanation:

We have equation of motion s = ut + 0.5 at²

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Acceleration, a = 9.81 m/s²

Time, t = 2.29 s

Substituting

s = ut + 0.5 at²

s = 25.3 x 2.29 + 0.5 x 9.81 x 2.29²

s = 83.66 m

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Explain what happens to the average kinetic energy, thermal energy, and temperature of a substance when the particles in the sub

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Kinetic, thermal, and the temperature of the substance all decrease when the particles slow down.

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3 years ago

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