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Vanyuwa [196]
3 years ago
10

A flask that weighs 345.8 g is filled with 225 mL of carbon tetrachloride. The weight of the flask and carbon tetrachloride is f

ound to be 703.55 g. From this information, calculate the density of carbon tetrachloride.
Physics
1 answer:
KatRina [158]3 years ago
6 0

Answer:

<em>Well, I think the best answer will be is </em><em>1.59 g/mL Good Luck!</em>

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What is the current in a 120V circuit if the resistance is 20Ω?
Kaylis [27]

We have: I=\frac{U}{R}=\frac{120}{20}=6A

ok done. Thank to me :>

6 0
2 years ago
a 4kg metal block absorbs 5000j of energy and increases to a temperature of 22°c. the metal has a specific heat capacity of 250j
e-lub [12.9K]

Answer:

17 °C

Explanation:

From specific Heat capacity.

Q = cm(t₂-t₁)................. Equation 1

Where Q = Heat absorb by the metal block, c = specific heat capacity of the metal block, m = mass of the metal block, t₂ = final temperature, t₁ = Initial temperature.

make t₁ the subject of the equation

t₁ = t₂-(Q/cm)............... Equation 2

Given: t₂ = 22 °C, Q = 5000 J, m = 4 kg, c = 250 J/kg.°c

Substitute into equation 2

t₁ = 22-[5000/(4×250)

t₁ = 22-(5000/1000)

t₁ = 22-5

t₁ = 17 °C

6 0
2 years ago
Two ice skaters stand in the middle of an ice rink. Drew has a mass of 75 kg, and Lily has a mass of 55 kg. Drew holds Lily, and
ss7ja [257]

PART a)

Before Drew throw Lily in forwards direction they both stays at rest

So initial speed of both of them is zero

So here we can say that initial momentum of both of them is zero

So total momentum of the system initially = ZERO

PART b)

Since there is no external force on the system of two

so there will be no change in the momentum of this system and it will remain same as initial momentum

So final momentum of both of them will be ZERO

PART c)

As we know that momentum of both will be zero always

so we have

P_1 + P_2 = 0

75(v) + 55(2) = 0

v = 1.47 m/s in opposite direction

7 0
2 years ago
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8 0
3 years ago
The distance a spring stretches varies directly as the amount of weight that is hanging on it. A weight of 2.5 pounds stretches
julsineya [31]
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18 = k2.5
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x = 6.4
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hope this help
5 0
2 years ago
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