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3 years ago

15

!!!!HURRY 30 POINTS!!!!

1 answer:

Nataly_w [17]3 years ago

3 0

The anwser is C flooding

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A motorcycle passes over the top of a hill that has a radius of curvature of 100 m. The mass of the motorcycle plus rider is 300

lorasvet [3.4K]

Answer:

$F_N>F_N'$

Explanation:

From the question we are told that

Radius of curvature $r=100m$

Mass $M=300kg$

initial Speed of Motorcycle $V_1=30m/s$

Final Speed of Motorcycle $V_2=33m/s$

Generally the equation Force at initial speed is mathematically given as

$F_N=mg-\frac{mv^2}{R}$

$F_N=300*9.8-\frac{(300*30)^2}{100}$

$F_N=240N$

Generally the equation Force at Final speed is mathematically given as

$F_N'=mg-\frac{mv'^2}{R}$

$F_N'=300*9.8-\frac{(300*33)^2}{100}$

$F_N'=-327N$

Therefore

$F_N>F_N'$

4 0

3 years ago

A resonant circuit using a 286-nFnF capacitor is to resonate at 18.0 kHzkHz. The air-core inductor is to be a solenoid with clos

lukranit [14]

Answer:

The inductor contains $N = 523962.32$ loops

Explanation:

From the question we are told that

The capacitance of the capacitor is $C = 286nF = 286 * 10^{-9} \ F$

The resonance frequency is $f = 18.0 kHz = 18*10^{3} Hz$

The diameter is $d = 1.1 mm = \frac{1.1 }{1000} = 0.00011 \ m$

The of the air-core inductor is $l = 12 \ m$

The permeability of free space is $\mu_o = 4 \pi *10^{-7} \ T \cdot m/A$

Generally the inductance of this air-core inductor is mathematically represented as

$L = \frac{\mu_o * N^2 \pi d^2}{4 l}$

This inductance can also be mathematically represented as

$L = \frac{1}{w^2}$

Where $w$ is the angular speed mathematically given as

$w = 2 \pi f$

So

$L = \frac{1}{4 \pi ^2 f^2}$

Now equating the both formulas for inductance

$\frac{\mu_o * N^2 \pi d^2}{4 l} = \frac{1}{4 \pi ^2 f^2}$

making N the subject of the formula

$N = \sqrt{\frac{1}{(2 \pi f)^2} * \frac{4 * l }{\mu_o * \pi d^2 C} }$

$N = \frac{1}{2 \pi f} * \frac{2}{d} * \sqrt{\frac{l}{\pi * \mu_o * C} }$

Substituting value

$N = \frac{1}{ 3.142 * 18*10^{3} * 0.00011 } \sqrt{\frac{12}{ 3.142 * 4 \pi *10^{-7}* 286 *10^{-9}} }$

$N = 523962.32$ loops

4 0

3 years ago

In an aligned and continuous carbon fiber-reinforced nylon 6,6 composite, the fibers are to carry 97% of a load applied in the l

drek231 [11]

Answer:

asdfghjkl

Explanation:

4 0

3 years ago

Read 2 more answers

Please answer this fast <br>I 'll marks them brainliest answer <br>

Reptile [31]

answer

64 is C (c) 1-Bromo-3-methylbutane

63 is D

i is secondary ii is primary

8 0

3 years ago

a ferry which runs at 12m/s in still water travels between towns a and b on a river which flows south at 9 m/s. the ferry leavs

Reil [10]

Answer:

= 15 m/s

Explanation:

Considering right side(west) as positive x-axis and south as negative y-axis.

velocity of boat in still water $v_b=12\hat{i}$

velocity of stream $v_s=-9\hat{j}$

now relative velocity of boat w.r.t. stream $v_{b/s}=12\hat{i}+9\hat{j}$

this velocity with which ac distance will be covered.

therefore magnitude of $v_{b/s} =\sqrt{12^2+9^2}$

= 15 m/s

6 0

3 years ago