PLEASE PLEASE HELP ME WITH THIS

Physics

1 answer:

zvonat [6]2 years ago

7 0

The answer would be A because I did the math :)

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How can two items of the same shape and size have different densities?

Novay_Z [31]

They can be the same shape & size but they can have different mass. And mass is density so if they have different masses then they have different densities.

MASS=DENSITY

7 0

3 years ago

Starting from rest, a 0.0367 kg steel ball sinks into a vat of corn syrup. The thick syrup exerts a viscous drag force that is p

Arisa [49]

Answer:

0.48 W

Explanation:

Given that:

the mass of the steel ball = 0.0367 kg

C = 0.270 N

g (acceleration due to gravity) = 9.8

Now;

At Terminal Velocity Weight is balance by drag force

mg =Cv

Making v the subject of the formula:we have:

$v = \frac {mg}{C}$

$v = \frac {0.0367*9.8}{0.270}$

v = 1.332 m/s

Thus, the Rate at which gravitational energy is converted to thermal energy once the ball reaches terminal velocity is:

P=Fv

P = mgv

$P = (0.0367*9.8)*1.332$

P=0.48 W

5 0

3 years ago

If a string vibrates at the fundamental frequency of 528 Hz and also produces an overtone with a frequency of 1,056 Hz, this ove

Tems11 [23]

<span>So we wan't to know which harmonic is the frequency of Fn=1056 Hz if we know that the fundamental frequency F1=528 Hz. So the frequency of n-th harmonic Fn is fundamental frequency F1 multiplied by n or Fn=n*F1. In our example we know the fundamental frequency and an overtone frequency and we want to know which harmonic it is so we are looking for n. So n=Fn/F1 and after we input our numbers we get that n=1056/528=2. So the frequency of 1056 is the frequency of the second harmonic.</span>

4 0

3 years ago

A wave of amplitude 0.4 m interferes with a second wave of amplitude 0.23 m traveling in the same direction. What is the largest

jek_recluse [69]

Answer:

Resultant amplitude is 0.53 m.

Explanation:

Amplitude is defined as the maximum displacement of wave particles from their respective mean positions.

The resulting amplitude of any two waves is given by the relation :

A = $\sqrt{A_{1} ^{2} + A_{2} ^{2} + 2A_{1}A_{2}\cos x }$