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2 years ago

Which of the following would have the highest kinetic energy? *

Physics

1 answer:

kogti [31]2 years ago

8 0

I would say egg yolk but at the same time I’m thinking cooked beef

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The witch in "Hansel and Gretel" owns a house made of cookies and candy for the ___ reason that she is sweet and kind, but actua

hichkok12 [17]

The answer would be A. Ostensible

8 0

2 years ago

Two truckers are traveling directly away from each other at the same speed. If one trucker sounds her horn at a frequency of 221

8_murik_8 [283]

Answer:

v = 8.8 m /s

Explanation:

For listener and source going away from each other the formula of Doppler effect is as follows

$\frac{f}{f_0} = \frac{V-v}{V+v}$

V is velocity of sound , v is velocity of listner and source of sound

f₀ is apparent frequency and f is real frequency

V = 343 , v = ? ,f = 210 , f₀ = 221

Put these value in the relation above

$[tex]\frac{210}{221} = \frac{343-v}{343+v}$ [/tex]

v = 8.8 m /s

6 0

2 years ago

At a country music festival, a band is playing at the end of a crowded

Anna11 [10]

Answer:

t=4.86s

Explanation:

To find the wavelength you use the following formula:

$v=\lambda f$

v: speed of sound = 343m/s

f: frequency = 400Hz

λ: wavelength of the sound

By doing λ the subject of the formula and replacing the values of f and v you obtain:

$\lambda=\frac{v}{f}=\frac{343m/s}{400Hz}=0.85m$

Now, to calculate the time that sound takes to reach the last row you use:

$t=\frac{d}{v}$

t: time

d: distance to the last row = 1947m

$t=\frac{1947m}{400Hz}=4.86s$

hence, the time is 4.86s

4 0

3 years ago

the fireman wishes to direct the flow of water from his hose to the fire at b. determine two possible angles u1 and u2 at which

Lelechka [254]

The two possible angles obtained by using the qudratic equation are;

θ $_{1}$ = 15.10° and θ2 = 73.51°

Given, speed of water = $v_{A}$ = 50ft/s

For the motion along x direction, time period can be calculated as follows:

$s_{x} = (v_{A}) _x_{} } t$

35 = (50 × cosθ) t

t = 0.64 / cosθ

For the motion in y direction, an equation can be obtained as follows:

$s_{y} = (v_{A})_{y} t +\frac{1}{2} (a_{y} )t^{2}$

$s_{y} = (-v_{A}$ $sin$ θ) $} t +\frac{1}{2} (a_{y} )t^{2}$

Plugging in the values we get:

$-20 = (-50_$ $sin$ θ) $} t +\frac{1}{2} (-32.2} )t^{2}$

-20 = -32tanθ - 10.304 $sec^{2}$ θ

Upon solving the above quadratic equation, we get,

tanθ = 0.27 , -3.38

Therefore,

tanθ $_{1}$ = 0.27

θ $_{1}$ = 15.10°

and, tanθ $_{2}$ = -3.38

θ $_{2}$ = 73.51

Learn more about quadratic equation here:

brainly.com/question/17177510

#SPJ4

8 0

4 months ago

Displacement is the difference between the initial position and the____ position of an object

SOVA2 [1]

<span>Displacement is the difference between the initial position and the FINAL position of an object.

Hope this helps!</span>

4 0

2 years ago