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Andrews [41]
2 years ago
8

Cart A and cart B are moving toward each other. They collide and come to rest at the point of impact. From this observation, we

can conclude that the carts
have equal masses
were moving with equal and opposite momentum
were moving with equal and opposite velocities
were moving with equal kinetic energies
Physics
2 answers:
nlexa [21]2 years ago
5 0

Answer:

were moving with equal and opposite momentum

Explanation:

As we know that in all collision net external force on the system of two masses will be ZERO

so we can use momentum conservation

F = \frac{\Delta P}{\Delta t}

if we have

F = 0

\Delta P = 0

m_1v_1 + m_2v_2 = 0

so we have

m_1v_1 = - m_2v_2

so correct answer will be

were moving with equal and opposite momentum

KiRa [710]2 years ago
4 0

Answer:

Were moving with equal and opposite velocities.

Explanation:

This situation is describing an "inelastic collision" in which objects stick together after colliding and kinetic energy is not conserved and is converted in other forms of energy like potential or thermal energy (deformations or heat).

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One of the most efficient engines built so far has the following characteristics: combustion chamber temperature = 1900°C, exhau
suter [353]

Answer:

actual efficiency is  47.78 %

Carnot efficiency  is 67.65 %

power output is 5.20 × 10^3 hp

Explanation:

given data

temperature = 1900°C = 1900+ 273 K = 2173 K

exhaust temperature = 430°C = 430 + 273 K = 703 K

fuel = 7.0 × 10^9 cal

work = 1.4 × 10^10 J

to find out

actual efficiency  and Carnot efficiency and power output of engine

solution

first we find actual efficiency that is = work / heat input

put the value and

input energy  = 7.0 × 10^9 cal  (4.184 J/1 cal)  = 29.29 × 10^9 J

actual efficiency  =  1.4 × 10^10 / ( 29.29 × 10^9 )

actual efficiency  =  0.4778

actual efficiency is  47.78 %

and

Carnot efficiency  is = 1 - ( 703 / 2173 )

so Carnot efficiency  is  = 0.67648

Carnot efficiency  is 67.65 %

and

power output  = work / time

power output  =  1.4 × 10^10 / 3600 sec

power output = 3.88 × 10^6 W

power output = 3.88 × 10^6 W / 746 hp

so power output is 5.20 × 10^3 hp

5 0
3 years ago
What crisis is occurring in California?
nlexa [21]
Hey there!

Option A

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2 years ago
H2+o2 - h2o mass<br> Please help
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H2O2 H2O

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Answer:

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Explanation:

Detailed explanation and calculation is shown in the image below

5 0
2 years ago
What is this ???????????
babymother [125]
A, something to remember is that if the numbers are even the answer too will be even. Every time hope this helps :>
8 0
3 years ago
Read 2 more answers
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