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creativ13 [48]
3 years ago
5

Temperature of a substance is proportional to the average kinetic energy of the motion of the molecules of that substance.

Physics
2 answers:
MrRissso [65]3 years ago
4 0
True, according to the Kinetic Molecular Theory.
IRINA_888 [86]3 years ago
4 0

The correct choice is

True

According to kinetic molecular theory, average kinetic energy per molecule of a gas is directly proportional to the temperature. The average kinetic energy is given as

KE = 1.5 k T

where T = temperature  , k = Boltzmann constant

hence

temperature is proportional to the average kinetic energy

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Class II levers like ankles and wheelbarrows are useful because they provide mechanical advantage, by amplifying the input force
marusya05 [52]

Answer:

The solution and the explanation are in the Explanation section.

Explanation:

According to the diagram that is in the attached image, the EFFORT force at point A and the load is at O point. The torque due to weight is:

TA = W * (a * cosθ)

The torque due to effort at C point is:

TC = E * (b * cosθ)

The net torque is equal to 0, we have:

Tnet = 0

W * (a * cosθ) - E * (b * cosθ) = 0

E=W\frac{a}{b}

From the figure, you can observe that a/b < 1, thus E < W

8 0
3 years ago
Hurry need an answer
notsponge [240]

Answer:

i think b

Explanation:

6 0
3 years ago
An airplane accelerates from a speed of 88m/s to a speed of 132 m/s during a 15 second time interval. How far did the airplane t
Gelneren [198K]

Answer:

1650\:\mathrm{m}

Explanation:

We can use the following kinematics equations to solve this problem:

v_f=v_i+at,\\{v_f}^2={v_i}^2+2a\Delta x.

Using the first one to solve for acceleration:

132=88+a(15),\\15a=44,\\a=\frac{44}{15}=2.9\bar{3}\:\mathrm{m/s^2}.

Now we can use the second equation to solve for the distance travelled by the airplane:

132^2=88^2+2\cdot2.9\bar{3}\cdot \Delta x,\\\Delta x= \frac{9680}{2\cdot2.9\bar{3}},\\\Delta x =\fbox{$ 1650\:\mathrm{m}$}(three significant figures).

6 0
3 years ago
Which evidence best supports the theory that the universe began with a massive explosion?
Ivanshal [37]
I think it's b. But I'm not sure
5 0
3 years ago
Read 2 more answers
When a bus is moving (especially with a high speed) on the road suddenly stops or suddenly changes its direction, the luggage on
Masja [62]

Answer:

First law of motion

Explanation:

I say this because this example shows how an object is staying persistent unless it's compled to change

(not sure)

7 0
3 years ago
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