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andrew-mc [135]
3 years ago
15

What is the density of a iphone with a mass of 200g and a volume of 40cm3

Physics
1 answer:
Leviafan [203]3 years ago
8 0
Answer: 5 gm/cc

Explanation:

200 gm/40 cc
= 5 gm/cc
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Calculate the recoil velocity in the horizontal direction, in meters per second, of a 1.25-kg plunger that directly interacts wi
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Answer:

v_1=-8.19\ m/s'

Explanation:

It is given that,

Mass of the plunger, m_1=1.25\ kg

Mass of the bullet, m_2=0.0175\ kg

Initially both plunger and the bullet are at rest, u_1=u_2=0

Final speed of the bullet, v_2=585\ m/s

Let v_1 is the final speed of the plunger. Using the conservation of momentum to find it. The equation is as follows :

m_1u_1+m_2u_2=m_1v_1+m_2v_2

Since, u_1=u_2=0

m_1v_1+m_2v_2=0

v_1=-\dfrac{m_2v_2}{m_1}

v_1=-\dfrac{0.0175\times 585}{1.25}

v_1=-8.19\ m/s

So, the recoil velocity of the plunger is 8.19 m/s. Hence, this is the required solution.

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In a real isothermal expansion, the temperature of the surroundings must be________the temperature of the gas.
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How is modeling useful in studying the structure of the atom?
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