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3 years ago

When the particles of a medium move with simple harmonic motion, this means the wave is necessarily a __________?

Physics

1 answer:

Hunter-Best [27]3 years ago

4 0

Wind energy simple harmonic motion

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From the edge of a cliff, a 0.46 kg projectile is launched with an initial kinetic energy of 1430 J. The projectile's maximum up

wel

Answer:

Explanation:

Given

mass of Projectile(m)=0.46 kg

Initial Kinetic Energy=1430 J

Maximum upward displacement from Launch point=150 m

$K.E.=\frac{mv^2}{2}$

$1430\times 2=0.46\times v^2$

v=78.85 m/s

and $H_{max}=\frac{v^2\sin ^2\theta }{2g}$

$150=\frac{(78.85)^2\sin ^2\theta }{2\times 9.8}$

$\sin \theta =0.687$

$\theta =43.39^{\circ}$

initial horizontal velocity $(v_x)=v\cos \theta$

$v_x=78.84\times \cos (43.39)=57.29 m/s$

Initial vertical velocity $(v_y)=v\sin \theta$

$v_y=78.85\times \sin (43.39)$

$v_y=54.16 m/s$

(c)vertical velocity at any instant=65 m/s

Since initial vertical velocity is 54.16 m/s

so 65 m/s will be acquired when projectile started falling below cliff

$v^2-u^2=2 a s$

$65^2-54.16^2=2\times 9.8\times s$

$s=65.90 m$

7 0

3 years ago

The most likely region of the radio spectrum for communication with other civilizations is in the "water hole."

Salsk061 [2.6K]

Answer:

Radio emissions of hydrogen and OH molecules

Explanation:

Water hole is a quiet region of the electromagnetic spectrum

8 0

3 years ago

How many moles of gas must be forced into a 4.6 l tire to give it a gauge pressure of 31.2 psi at 26 âc? the gauge pressure is r

Bess [88]

Use the Ideal Gas Law to the air in the tire :

( P ) ( V ) = ( n ) ( R ) ( T )
n = ( P ) ( V ) / ( R ) ( T )
P = P gauge + P baro = 31.2 psig + 14.8 psia = 46 psia
P = ( 46 psia ) ( 1 atm / 14.696 psia ) = 3.13 atm
n = ( P ) ( V ) / ( R ) ( T )
n = ( 3.13 atm ) ( 4.6 L ) / ( 0.08206 atm - L / mol - K ) ( 26.0 + 273.2 K )
n = 0.5864 moles
m = ( n ) ( M )
m = ( 0.5864 mol ) ( 28.96 g/ mol ) = 16.98 g

7 0

3 years ago

the force of attraction between two objects is called gravity why do you think that an object like your note book pulls twords y

mr_godi [17]

gravitaional pull

not sure

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3 years ago

Explain What drug Is

12345 [234]

Answer:

A drug is a substance, which alters The functioning of mind and body of a person. Drug can cure disease when taken in right quantities under the supervision of a physician.

3 0

3 years ago