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drek231 [11]
3 years ago
9

Which statement describes the direction of spontaneous heat flow

Physics
2 answers:
NISA [10]3 years ago
8 0
The direction of spontaneous heat flow in a system is described by the second law of thermodynamics, which describes that the direction of spontaneous heat flow is from a region of higher heat energy to a region of lower heat energy.
Multiple statements of this law are available, such as the one presented by Carnot or the one presented by Clausius and Planck.
AnnZ [28]3 years ago
8 0

Answer:

ok but what iz the answer

Explanation:

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A 1200-kg ore cart is rolling at 10.8 m/s across a flat friction-free surface. a crane suddenly drops of ore vertically into the
Andre45 [30]
The value of the final speed depends on the mass of the ore.

Let's call m the mass of the ore. We can solve the exercise by requiring the conservation of momentum, which must be the same before and after the ore is loaded.

Initially, there is only the cart, so the momentum is
p=Mv=(1200 kg)(10.8 m/s)=12960 kg m/s
After the ore is loaded, the new mass will be (1200 kg+m), and the new speed is v_f. The momentum p is conserved, so it is still 12960 kg m/s. Therefore, we have
p=12960 kg m/s =(1200 kg+m)v_f
and so the final speed is
v_f =  \frac{12960 kg m/s}{1200 kg +m}
5 0
3 years ago
A train that travel 100 kilometer in 4hours is traveling at what speed?
DochEvi [55]
Speed = Distance/Time = 100 km / 4 hours = 100/4 km per hour = 25 kph
5 0
3 years ago
David is investigating the properties of soil using the sample shown.
charle [14.2K]

Answer:

IT IS A BC ION KNOW WHY

Explanation:

5 0
2 years ago
A golf ball with an initial angle of 34° lands exactly 240 m down the range on a level course.
g100num [7]

Answer:50.39 m/s,

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Explanation:

Given

launch angle=34^{\circ}

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We know that Range =\frac{u^2sin2\theta }{g}

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u=50.39 m/s

(b)maximum height of projectile is given by

H=\frac{u^2sin^2\theta }{2g}

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3 0
3 years ago
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jasenka [17]

Answer:

95 calories

Explanation:

A medium-sized apple has only 95 calories but plenty of water and fiber.

8 0
2 years ago
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