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miss Akunina [59]
2 years ago
8

Janice has just measured the density of an object. Which value is possible? (Density: D = )

Physics
2 answers:
babunello [35]2 years ago
6 0
It is 6 g/cm3 because density cannot be negative, and it is not speed in which the unit would be m/s.
Naily [24]2 years ago
4 0

Answer:

density = 6 g/cm^3

Explanation:

as we know that density is the ratio of mass and volume of the object

density = \frac{mass}{volume}

here we know that mass as well as volume both are always positive so the ratio of both can not be negative.

so we know that mass is measured in gram and volume is measured in cubic cm

so the density is measured in

density = \frac{gram}{cm^3}

so the correct answer must be positive and in terms of above units

so we have

density = 6 g/cm^3

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2 years ago
A 50 g tennis ball travels at a velocity of 15 m/s, hits a basketball with a mass of 600 g that is stationary on a frictionless
statuscvo [17]

Answer:

1.75 m/s

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2 years ago
the arm of a crane is 15.0 m long and makes an angle of 70.0 degrees with the horizontal. Assume that the maximum load for the c
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3 0
2 years ago
An organ pipe is made to play a low note at 27.5 Hz, the same as the lowest note on a piano. Assuming a sound speed of 343 m/s,
timama [110]

Answer:

The length of open-open pipe needed is 6.23 m

The length of open-close  pipe needed is 3.11 m

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Fundamental frequency for standing wave mode of  an open- open pipe is given by

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where v is the velocity and L is the length

The length of open-open pipe needed is

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Fundamental frequency for standing wave mode of  an open- close pipe is given by

f=\frac{v}{2L}

The length of open-close pipe needed is

L=\frac{v}{2f} \\L=\frac{343}{2\times 27.5} \\L=6.23 m

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2 years ago
Compare the momentum of a 6,300-kg elephant walking 0.11m/s and a 50 kg dolphine swimming 10.4m/s
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Momentum of elephant = 6300 * 0.11 = 693 kg-m/s

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7 0
2 years ago
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