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3 years ago

In an internal combustion engine, air at atmostpheric

Physics

1 answer:

notsponge [240]3 years ago

8 0

Answer:

1302 K or 1029 C

Explanation:

Air at atmospheric pressure has pressure of 1 atm

20 C = 20 + 273 = 293 K

Assume ideal gas, according to the ideal gas law:

$\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}$

Where P1, V1 and T1 are the pressure, volume and temperature of the gas before the compression and P2, V2 and T2 are the pressure, volume and temperature of the gas after the compression

$T_2 = T_1\frac{P_2V_2}{P_1V_1}$

Since the gas is compressed to 1/9 of its original volume, V2/V1 = 1/9:

$T_2 = 293\frac{40}{9} = 1302 K$ or 1029 C

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In an arcade game a 0.135 kg disk is shot across a frictionless horizontal surface by compressing it against a spring and releas

ioda

Answer:

v=2.42m/s

Explanation:

We use the energy conservation theorem in order to solve the problem. The energy when the spring is compressed is equal at the energy when the disk leaves the spring:

$E_{initial}=E{final}\\E_{k-initial}+E_{p-initial}=E_{k-final}+E_{p-final}\\0+\frac{1}{2}kx^2=\frac{1}{2}mv^2+0$

At the beginning the initial energy is totally potential, energy linked to the compressed spring. At the end the energy is totally kinetics

We solve the equation in order to find the speed.

k=162 N/m

x=7 cm=0.07m

m=0.135 kg

$v=x*\sqrt{k/m}=0.07*\sqrt{162/0.135}=2.42m/s$

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3 years ago

How much min the basketball 1 player play

Sedbober [7]

Answer:

A professional basketball game depends on the association presiding over the game. An NBA game lasts for 48 minutes whereas FIBA games take 40 minutes. The total time taken to play for any specialized game is over 2 hours 15 minutes. The time includes the time disruptions like fouls, timeouts, and breaks.

<em>I hope it helps you...</em>

3 0

3 years ago

Swamps and other wetlands do not offer much value to humans. True or false?

uysha [10]

The statement 'Swamps and other wetlands do not offer much value to humans' is FALSE.

<h3>What are Swamps?</h3>

Swamps and other wetlands are specific ecosystems that are abundant in biodiversity and therefore offer many advantages.

Biodiversity is fundamental to discovering new biotechnological applications and therefore swamps are fundamental for humans.

In conclusion, The statement 'Swamps and other wetlands do not offer much value to humans' is FALSE.

Learn more about swamp diversity here:

brainly.com/question/14619172

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2 years ago

Question 3. Which of these best describes the field of engineering? *

Naily [24]

It’s B hope this helped

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4 years ago

Young's experiment is performed with light of wavelength 502nm from excited helium atoms. Fringes are measured carefully on a sc

alexandr402 [8]

Answer:

d = 1.30 mm

Explanation:

given,

wavelength of the light source (λ)= 502 nm

slits is separated (d) = ?

distance to form interference pattern(D) = 1.35 m

20 th fringe

y = 10.4 mm = 0.0104 m

now,separation between to slits

$d = \dfrac{m\lambda\ D}{y}$

where y is the fringe width

$d = \dfrac{20 \times 502\times 10^{-9}\ \times 1.35}{0.0104}$

$d = \dfrac{13354\times 10^{-9}}{0.0104}$

d = 1.30 mm

separation between to slits is equal to d = 1.30 mm

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3 years ago