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Vesnalui [34]
2 years ago
15

Compared to a soft sound, a loud sound at the same pitch....(check all true statements)

Physics
1 answer:
Sladkaya [172]2 years ago
3 0

Answer:

One might think of a plucked guitar string - the sound would depend on the original amplitude of the disturbance -

Speed and velocity would still be the same

(b) is correct because the energy transfer depends on the original energy applied.

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To practice problem-solving strategy 9.1 a strategy for conservation of momentum problems. an 80-kg quarterback jumps straight u
kherson [118]
Refer to the diagram shown below.

By definition momentum =  mass *  velocity.

Before throwing the ball:
The initial momentum is
P₁ = 0.

After throwing the ball:
Let u = the backward velocity of the quarterback.
The momentum is 
P₂ = (0.43 kg)*(15 m/s) + (80 kg)*(- u m/s)

Conservation of momentum requires that
P₂ = P₁
6.45 - 80u = 0
u = 6.45/80 = 0.0806 m/s

Answer: 0.08 m/s backward

6 0
3 years ago
Read 2 more answers
List the chemicals and apparatus
Softa [21]

Answer:

Beaker

Graduated Cylinders

Volumetric flask

Test tube

Funnel

4 0
2 years ago
a measuring cylinder contains 30cm3 of a liquid some more of the liquid is added until the liquid level reaches the 50cm3 mark t
S_A_V [24]

Answer:

1.5g/cm³

Explanation:

Given parameters:

Initial volume of the liquid  = 30cm³

Final volume of the liquid  = 50cm³

Mass of the liquid  = 30g

Unknown:

Density of the liquid  = ?

Solution:

Density is the mass per unit volume of a substance.

  Density  = \frac{mass}{volume}  

volume of the liquid  = final volume - initial volume  =  50cm³  -  30cm³

 volume of the liquid  = 20cm³

Density  = \frac{30}{20}   = 1.5g/cm³

6 0
3 years ago
Which technology is intended to work at a distance of about 5 to 10 centimeters with transmission speeds of 250 Kbps?
Mars2501 [29]

Answer:

NFC Near Field Communication

Explanation:

The Near Field Communication is a communication protocol, for extra short distance with a maximum of 10 centimeters, but usually used in 4 to 5 cm. Its intended to be used in contactless pay systems and in transportation card. Actually has been used to transfer multimedia from cell phones and other devices. The maximum data rate is around 424 kbit/s, with mean in 250 Kbp

5 0
4 years ago
1. What happens to particle spacing when temperature increase, What we call this process?
enot [183]

Answer:

Particle spacing increases and it's called evaporating

5 0
4 years ago
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