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3 years ago

If I wanted to measure the mass of an object rather than the weight, what should I use

Physics

1 answer:

Montano1993 [528]3 years ago

5 0

Answer:

the most common way to measure mass is using a balance.

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Three bullets are fired simultaneously by three guns aimed toward the center of a circle where they mash into a stationary lump.

Effectus [21]

Answer: $2.32\times 10^{-3} kg$

Explanation:

Given

mass of first and second bullet $m_1=m_2=3.90\times 10^{-3} kg$

Velocity of two bullets $v_1=v_2=368 m/s$

velocity of third bullet $v_3=618 m/s$

angles between guns is $120^{\circ}$

Suppose First gun is at $0^{\circ}$ and second is at $120^{\circ}$ and third is at $240^{\circ}$

therefore

conserving momentum in x-direction

$m_1v_1\cos 0+m_2v_2\cos 120+m_3v_3\cos 240=0$

as three bullets club together to become lump

$3.90\times 10^{-3}\times 368+3.90\times 10^{-3}\times 368\times \cos (120)+m_3\times 618\times \cos (240)=0$

$3.90\times 10^{-3}\times 368+3.90\times 10^{-3}\times 368\times (-0.5)+m_3\times 618\times (-0.5)=0$

$0.5\times 3.90\times 10^{-3}\times 368=m_3\times 618\times 0.5$

$m_3=3.90\times 10^{-3}\times \frac{368}{618} kg$

$m_3=2.32\times 10^{-3} kg$

5 0

3 years ago

Explain three differences between a science and a pseudoscience.

grin007 [14]

1) science does not accept personal story's as evidence, pseudoscience relies on these story's as evidence.
2) science argues from scientific knowledge, pseudoscience argues from ignorance
3) science progresses, pseudoscience does not progress
and 4) (just in case) science holds pier review, pseudoscience does not

8 0

4 years ago

Convert the following in to SI units without changing its values<br> a. 4000 g <br>b. 2.4 km

lana66690 [7]

hi <3

i believe i explained this answer properly in my last answer but it would be 4kg and 2400m as these are the SI units for these values.

hope this helps :)

3 0

3 years ago

Read 2 more answers

If a bar magnet is broken into two pieces, each of the resulting pieces

victus00 [196]

They will become identical as if they were never broken

7 0

4 years ago

3. Which of the following is true about astronauts taking out the TRASH?

scoray [572]

Answer:

Explanation:

When trash accumulates, astronauts manually squeeze it into trash bags, temporarily storing almost two metric tons of it for relatively short durations, and then send it away in a departing commercial supply vehicle, which either returns it to Earth or incinerates it during reentry through the atmosphere.

6 0

3 years ago