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SpyIntel [72]
2 years ago
10

What are three things that transfer energy by sound

Physics
2 answers:
Sergio039 [100]2 years ago
7 0
3 things that transfer energy by sound is a plucking guitar strings,speakin into a microphone and banging a drum
Bezzdna [24]2 years ago
5 0
1. Hair dryer. 2. A tv. 3. Radio
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An apple drops from a tree and hits the ground in 1.5s what is its speed just before it hits the ground?
Zarrin [17]

Vf - Vo = gT  

where  

Vf = velocity of apple just before hitting the ground  

Vo = initial velocity of apple = 0  

T = time for apple to hit the ground = 1.5 sec (given)  

g = acceleration due to gravity = 9.8 m/sec^2 (constant)  

Substituting appropriate values,  

Vf - 0 = 9.8(1.5)  

Vf = 14.7 m/sec.  


8 0
3 years ago
A resistor, an inductor, and a capacitor are connected in series to an ac source. What is the phase angle between the voltages o
Rom4ik [11]

The phase angle between the voltages of the capacitor and inductor in rlc circuit is 180°.

The phase angle is the component of a periodic wave. It is the shift between the AC current and the voltage on the measured impedance. The two elements of phase angle are reactance(X) and resistance (R).

The phrase for phase angle is, Xₐ = sinωt

where Xₐ= phase angle

ω = wavelength of the wave in 1 revolution

t = time period of 1 revolution

The instantaneous voltage ΔvR is in phase with the current, ΔvL leads the current by 90°, while ΔvC lags behind the current by 90°. The instantaneous values of these three voltages do add algebraically to give the instantaneous voltages across the RLC combination.

Learn more about phase angle here brainly.com/question/14391865

#SPJ4

3 0
1 year ago
A horse running at 3 m/s speeds up with a constant acceleration of 5 m/s2. How fast is the
Elan Coil [88]

Answer:

The horse is going at 12.72 m/s speed.

Explanation:

The initial speed of the horse (u) = 3 m/s

The acceleration of the horse (a)= 5 m/s^{2}

The displacement( it is assumed it is moving in a straight line)(s)= 15.3 m

Applying the second equation of motion to find out the time,

s=ut+\frac{1}{2}at^{2}

15.3=3t+2.5t^{2}

2.5t^{2}+3t-15.3=0

Solving this quadratic equation, we get time(t)=1.945 s, the other negative time is neglected.

Now applying first equation of motion, to find out the final velocity,

v=u+at

v=3+1.945*5

v=3+9.72

v=12.72 m/s

The horse travels at a speed of 12.72 m/s after covering the given distance.

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3 years ago
Chemical name and a common name for NaOH​
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Chemical Name: Sodium Hydroxide
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2 years ago
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Phase, color, and ductility are all examples of what type of property?
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Physical properties.
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