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3 years ago

I really need an answer to this today! Please help!

Physics

1 answer:

Alekssandra [29.7K]3 years ago

7 0

For the water could use a silicon to measure that and for magnesium you can use a scale

you would pour the distilled water in the silicon glass thingy til you reach 25ml and then put 2.5 grams of magnesium on the scale
i really hope this helps

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After falling from rest at a height of 28.7 m, a 0.502 kg ball rebounds upward, reaching a height of 19.8 m. If the contact betw

Ad libitum [116K]

Answer:

9080 N

Explanation:

Consider the two motions of the ball.

In the downward motion, initial velocity, u, is 0 (because it falls from rest) and the distance is 28.7 m. Using the equation of motion and using g as 9.8 m/s²,

v² = u² + 2as

v² = 0² + 2 × 9.8 × 28.7 = 562.52

v = 19.7 m/s

For the downward motion, the initial velocity is unknown, the final velocity is 0 and initial velocity is desired. g is negative because the motion is upwars.

0² = v² - 2 × 9.8 × 19.8

v² = 388.08

v = 10.7 m/s

The change in momentum = 0.502(10.7 -(23.7)) = 21.7868 kgm/s

The impulse = change in monetum

Ft = 21.7868 kgm/s

But t = 2.4 ms

$[tex]F = \dfrac{21.7868}{2.4\times10{-3}} = 9078 \text{ N}$ [\tex]

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3 years ago

If the amplitude of the waves coming from a light bulb decreased, which would you expect to happen?

jekas [21]

The amplitude of the electromagnetic waves coming from
a light bulb is exactly an indication of the energy carried by
the waves.

If their amplitude decreases, then the waves are carrying less
energy. The brightness of the light decreases, AND the bulb
runs cooler, because it produces less heat.

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3 years ago

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Find the capacitance at which the power dissipated by the resistor would be maximized if the circuit is driven at a frequency of

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3 years ago

A system consists of electrons and protons only. It contains 150 electrons and has a total charge of +22e. What is the mass of t

siniylev [52]

Answer:

Mass of system will be $288.605\times 10^{-28}kg$

Explanation:

We have given a system consist 150 electrons

Mass of one electron $m_{e}=9.1\times 10^{-31}kg$

So mass of 150 electron $=150\times 9.1\times 10^{-31}=1365\times 10^{-31}=1.365\times 10^{-28}kg$

Charge on system is +22e

So number of proton = 150 +22 = 172

Mass of one proton $=1.67\times 10^{-27}kg$

So mass of 172 proton $=172\times 1.67\times 10^{-27}=287.24\times 10^{-27}=287.24\times 10^{-28}kg$

So total mass on the system $=287.24\times 10^{-28}+1.365\times 10^{-28}=288.605\times 10^{-28}kg$

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3 years ago

True or false: in applying the pythagorean theorem to vector addition, the resultant vector is given by the perpendicular vector

olganol [36]

It is False in applying the pythagorean theorem to vector addition, the resultant vector is given by the perpendicular vector

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Learn more about Pythagoras theorem here:

brainly.com/question/343682

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1 year ago