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nasty-shy [4]
3 years ago
12

Lou’s pet parrot looks as through it has many more features on cold days than it appears to have on warm ones. Loy determines th

at the number of features is effected by the temperature. Which of the following is an independent variable?
Physics
1 answer:
Alexus [3.1K]3 years ago
8 0

it has many more features on cold days than it appears to have on warm ones; thats the independant variable i believe

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A wave looses its power as it comes to shore because it gets less deeper every second it gets closer to shore
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3 years ago
During a compression at a constant pressure of 290 Pa, the volume of an ideal gas decreases from 0.62 m3 to 0.21 m3. The initial
Aloiza [94]

Answer:

a) -41.1 Joule

b) 108.38 Kelvin

Explanation:

Pressure = P = 290 Pa

Initial volume of gas = V₁ = 0.62 m³

Final volume of gas = V₂ = 0.21 m³

Initial temperature of gas = T₁ = 320 K

Heat loss = Q = -160 J

Work done = PΔV

⇒Work done = 290×(0.21-0.62)

⇒Work done = -118.9 J

a) Change in internal energy = Heat - Work

ΔU = -160 -(-118.9)

⇒ΔU = -41.1 J

∴ Change in internal energy is -41.1 J

b) V₁/V₂ = T₁/T₂

⇒T₂ = T₁V₂/V₁

⇒T₂ = 320×0.21/0.62

⇒T₂ = 108.38 K

∴ Final temperature of the gas is 108.38 Kelvin

5 0
3 years ago
A particle accelerator fires a proton into a region with a magnetic field that points in the x-direction. (a) If the proton is m
iVinArrow [24]

Answer:

<em>The magnitude of the magnetic field will act in a direction towards me.</em>

<em></em>

Explanation:

When a charged particle enters a magnetic field, it is deflected. The direction of travel of the particle is deflected, but the kinetic energy of the particle is not affected. <em>The force experienced by a charged particle as it enters a magnetic field that acts perpendicular to the path of the velocity of the particle, will produce a force that is perpendicular to both the direction of travel of the particle and the direction of the magnetic field.</em> In this case, the proton moves in the y-direction, the magnetic field is in the x-direction, therefore the force experienced by the particle will be towards me.

7 0
3 years ago
A scientist wants to know if adults prefer watching movies in a theater or in their home. He interviews 500 people leaving a loc
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Answer:

The location of the survey is biased.

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8 0
3 years ago
A simple pendulum 2 m long swings through a maximum angle of 30 ∘ with the vertical. part a calculate its period assuming a smal
victus00 [196]

Length of the pendulum (l) = 2 m

Acceleration due to gravity = g = 9.8 m/s^2

For small amplitude, the pendulum will undergo simple harmonic motion.

Hence, the time period of the pendulum for small amplitude = 2\pi \sqrt{\frac{l}{g} }

Now, plug the values of l and g

T = 2\pi \sqrt{\frac{2}{9.8} }

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Hence, the time period of the pendulum for small amplitude = 2.83 s

3 0
3 years ago
Read 2 more answers
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