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3 years ago

In which of these samples do the molecules most likely have the most kinetic energy? (2 points)

1 answer:

4 0

D, water vapor. Gaseous state would have more kinetic energy, they are moving faster. If you have to compare the same state, then higher temperature would have the higher kinetic energy. But if you have solid and liquid at the same temperature - then liquid would have more.

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Saturn has a radius of about 9.0 earth radii, and a mass 95 times the Earth’s mass. Estimate the gravitational field on the surf

torisob [31]

Answer:

11.49 m/s²

Explanation:

gs = gm/r²

gs = g(95 Me) / (9²Re²)

gs = ge × (95/9²)

gs = 1.173 × ge

gs = 1.173 × 9.8

gs = 11.49

The unit is m/s²

7 0

3 years ago

Read 2 more answers

If you catch the ruler 4.9 cm from the lower end, what is your reaction time?

Luba_88 [7]

Answer:

0.10s

Explanation:

the fall time is

4.9/100=.5*9.81*t^2

solve for t

6 0

3 years ago

A jet plane is cruising at 310 m/s when suddenly the pilot turns the engines up to full throttle. after traveling 4.0 km , the j

Inessa [10]

For this problem, we would be using the formula: Vf^2 = Vi^2 + 2ad
where:
Vf = 400m/s
Vi = 300m/s
a = ?
d = 4.0km
= 4000m

400^2 = 300^2 + 2a4000
a = [ 160000 - 90000 ] / 8000
a = 8.75m/s^2
rounding it off to 2 significant figures, will give us 8.8 m/s^2.

4 0

4 years ago

A plane takes off from an airport and flies to town A, located d1 = 335 km from the airport in the direction 20.0° north of east

gtnhenbr [62]

Answer:

R = 545.38 m ; θ = 28.43°

Explanation:

given,

for town A : d₁ = 335 km at an direction of 20° north of east

for town B : d₂ = 245 km at 30.0° west of north from town A

x = 335 cos 20° + 245 sin 30°

x = 437.29 m

y = 335 sin 20° + 245 cos 30°

y = 326.75 m

$resultant = \sqrt{x^2+y^2}$

$R =\sqrt{437.29^2+326.75^2}$

R = 545.38 m

$tan \theta = \dfrac{326.75}{437.29}$

θ = 28.43°

4 0

4 years ago

What affects our utility

agasfer [191]

Answer:

Energy Bill fluctuations are inevitable and depend on a variety of different factors. Two of the most important are the current weather your home is experiencing and the current price per Kilowatt Hour (which fluctuates more than you might think).

7 0

3 years ago

Read 2 more answers