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2 years ago

Which measure is equivalent to work/distance

Chemistry

2 answers:

Bad White [126]2 years ago

8 0

The amount of force is what this is for

Katarina [22]2 years ago

8 0

Whenever 'work' is done energy is transferred from one place to another. The amount of work done is expressed in the equation: work done = force<span> x distance. Power is a measure of how quickly work is being done. Power is expressed in the equation: power = work done / time taken.</span>

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Can someone help me plz

Sidana [21]

That answer is what characteristic you have.

4 0

2 years ago

1.) A gas occupies 3.5L at 2.5 atm pressure. What is the volume at 10 atm pressure?

romanna [79]

Answer:

.875

Explanation:

Use Boyle's Law and rearrange formula.

- Hope this helps! Please let me know if you need further explanation.

5 0

2 years ago

A 100-gram sample of material requires 1220 calories of heat energy to raise its temperature from 20 0C to 80 0C. What is the sp

SashulF [63]

Taking into account the definition of calorimetry, sensible heat and latent heat, the specific heat capacity of the material is 0.203 $\frac{calories}{gC}$ .

<h3>Calorimetry</h3>

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

Sensible heat is defined as the amount of heat that a body absorbs or releases without any changes in its physical state (phase change).

The amount of heat a body receives or transmits is determined by:

Q = c× m× ΔT

where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.

<h3>Specific heat capacity of the material</h3>

In this case, you know:

Q= 1220 calories
c= ?
m= 100 g
ΔT=Tfinal - Tinitial= 80 C - 20 C= 60 C

Replacing in the definition of amount of heat:

1220 calories= c× 100 g× 60 C

Solving:

c= 1220 calories÷ (100 g× 60 C)

<u><em>c= 0.203 </em></u> $\frac{calories}{gC}$

Finally, the specific heat capacity of the material is 0.203 $\frac{calories}{gC}$ .

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3 0

1 year ago

A student has to create a model of a convex lens. Which property of a convex lens should the student include in the model?

Zepler [3.9K]

Answer:

A. The lens spreads light.

Explanation:

The convex lens will converge the light that passes through it. The direction of light will be bend to be closer to the middle point. This is the lens used for the eyeglass that treat people with hypermetropia. That is why the convex lens also called a converging lens or a plus lens. The strength of the convex lens depends on its focal length, index of the material used, and the radius of curvature.

4 0

2 years ago

A sample of air occupies 4.40 L when the pressure is 2.60 atm.

julia-pushkina [17]

Explanation:

Given that,

Initial volume, V₁ = 4.40 L

Initial pressure, P₁ = 2.6 atm

(a) Final pressure, P₂ = 6.2 atm

As per the relation,

$P_1V_1=P_2V_2\\\\V_2=\dfrac{P_1V_1}{P_2}\\\\V_2=\dfrac{2.6\times 4.4}{6.2}\\\\V_2=1.84\ L$

(b) Again using the above relation,

$P_2=\dfrac{P_1V_1}{V_2}\\\\P_2=\dfrac{2.6\times 4.4}{0.0290 }\\\\P_2=394.48\ atm$

Hence, this is the required ssolution.

8 0

1 year ago