The gas in a cylinder has a volume of 3 liters at a pressure of 100 kPa. The pressure of the gas is increased to 203 kPa. Assuming the temperature remains constant, what would the new volume be?

Answers

Answer 1

Answer: Boyle-Mariotte law,

P1*V1=P2*V2

Then,

100*3=203*V2

Then,

V2=1.48 L

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A 360-N child is in a swing that is attached to a pair of ropes 1.90 m long. Find the gravitational potential energy of the child–Earth system relative to the child's lowest position at the following times.

Answers

Answer:

684J

Explanation:

So basically the formula for gravitational potential energy is Mass X Gravity X height. That is G.p.e = mgh

We don't have the mass but since we have the height, we multiply directly with the height since the quantity of weight is already given.

so G.p.e = 360 X 1.9 = 684J

Note that; The answer is in joules because g.p.e is work done.

Hope that was helpful!!

Resistivity measurements on the leaves of corn plants are a good way to assess stress and overall health. The leaf of a corn plant has a resistance of 2.3 MΩ measured between two electrodes placed 20 cm apart along the leaf. The leaf has a width of 2.3 cm and is 0.20 mm thick.Part AWhat is the resistivity of the leaf tissue?Express your answer to two significant figures and include the appropriate units.ρ=________Part BIs this greater than or less than the resistivity of muscle tissue in the human body?(A) greater or(B) less

Answers

Answer:

Part a)

$\rho = 52.9 ohm- m$

Part b)

the resistivity of corn plant is grater than the resistivity of muscle tissue in the human

Explanation:

Part a)

As we know the formula of resistance is given as

$R = \rho (L)/(A)$

here we know that

$\rho = (RA)/(L)$

here we have

$R = 2.3 M ohm$

$L = 20 cm$

$Area = (0.023)(0.20 * 10^(-3))$

$Area = 4.6 * 10^(-6) m^2$

now we have

$\rho = ((2.3 * 10^6)(4.6 * 10^(-6)))/(0.20)$

$\rho = 52.9 ohm- m$

Part b)

Resistivity of mucle tissue of human is is ranging from 15 ohm-m to 50 ohm m so here we can say that

the resistivity of corn plant is grater than the resistivity of muscle tissue in the human

Clouds, wind, and rain are part of the _____. stratosphere
thermosphere
troposphere
thermosphere

Answers

A its Stratosphere, Sorry I didn't see your answer, its bilogy I think not physics.. :)

Answer:

troposphere

Explanation:

The time, t, required to drive a fixed distance varies inversely as the speed, r. It takes 9 hr at a speed of 20 km/h to drive a fixed distance. How long will it take to drive the same distance at a speed of 23 km/h?

Answers

Answer:

Time=7.84hrs

Explanation:

This is an inverse proportionality questions

Mathematically time t varies as 1/distance d

Hence T= dk/r

But speed r = distance/t

d= r*t= 9*20=180km/hr

We're k= constant of proportionality

At t=9hrs d=180km/hr

Hence k=r*t/d=20*9/1620=0.111

Finding t at at 1620km for 23km/hr

t=1620*0.111/23=7.84hrs

True or false An upward fold in a rock is called a plateau.

Answers

That statement is false. An upward fold on a rock is acalled an anticlinea typical anticline is convex up in which the hinge or crest is located where the curvature is the greatest and the limbs are the side of the fold that dip away from the hinge

Final answer:

An upward fold in rock is not a plateau, but is termed an anticline. They form when two continental masses collide, causing the Earth's crust to fold and buckle, forming many of the world's mountain ranges.

Explanation:

False, an upward fold in a rock is not called a plateau but is termed as an anticline. The formation of this kind of structure occurs when two continental masses are in a collision course moving towards each other. They push against each other under great pressure causing the Earth's crust to buckle and fold. Some rock gets dragged deep below the surface while other folds are elevated to heights of many kilometres. This upward fold or anticline, is how many mountain ranges on Earth were formed, such as the Alps which resulted from the African plate bumping into the Eurasian plate.

Learn more about Anticline and Mountain Formation here:

brainly.com/question/946226

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A container has a mass of 150 g. What is the masser of a liquid if the container plus the liquid has a mass of 185 g?

Answers

All we have to do is subtract
sooooo
185 - 150 = 35
so the mass of the liquid is 35g
:)
:P
:D

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6. Two blocks are released from rest at the same height. Block A slides down a steeper ramp than Block B. Both ramps are frictionless. The blocks reach the same final height indicated by the lower dashed line. Block B weighs more than Block A. a. Is the work done by the gravitational force on Block A (greater/less than/equal to) the work done by the gravitational force on Block B? Explain your reasoning. b. Is the speed of Block A (greater/less than/equal to) the speed of Block B? Explain your reasoning. c. Is the momentum of Block A (greater/less than/equal to) the momentum of Block B? Explain your reasoning.

Suppose that at room temperature, a certain aluminum bar is 1.0000 m long. The bar gets longer when its temperature is raised. The length l of the bar obeys the following relation: l=1.0000+2.4×10−5T, where T is the number of degrees Celsius above room temperature. What is the change of the bar's length if the temperature is raised to 14.1 ∘C above room temperature?