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timurjin [86]
2 years ago
9

A cat runs 80 meters to the left in 16 seconds, then 50 meters to the right in 10 seconds, then 70 meters to the left in 14 seco

nds, then 40 m to the right in 8 seconds.
a. What was the distance travelled by the cat?

b. What was the displacement of the cat?

c. What was the average speed of the cat?

d. What was the average velocity of the cat?
Physics
1 answer:
11Alexandr11 [23.1K]2 years ago
8 0
<h3>Answer:a) Distance= 240m. b) Displacement= 90m. c) Average Speed= 5ms^{-1}. d) Average Velocity= 1.875 ms^{-1}</h3>

Explanation:

a) Distance ➤ (80+50+70+40) m. ➤ Distance= 240m.

b) Displacement ➤ (50+40)m. ➤ Displacement= 90m

c) Average Speed ➤ Total distance travelled/total time taken

                              ➤ 240/48

                              ➤ 5 ms^{-1}

d) Average Velocity ➤ Total displacement/total time taken

                                 ➤ 90/48

                                 ➤ 1.875 ms^{-1}

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Answer:

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Explanation:

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a)

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KE_f=\dfrac{1}{2}0.3\times 5^2

KEf=3.75 J

The  energy transformed from mechanical to internal = 15 - 3.75 J = 11.25 J

b)

The minimum value to complete the circular arc

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Now by putting the values

V=\sqrt{0.8\times 10}

V= 2.82 m/s

So kinetic energy KE

KE=\dfrac{1}{2}mV^2

KE=\dfrac{1}{2}0.3\times 2.82^2

KE=1.19 J

ΔKE= KEi - KE

ΔKE= 15- 1.19 J

ΔKE=13.80 J

The minimum energy required to complete 2 revolutions = 2 x 11.25 J

                                                                                                    = 22.5 J

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Number of revolution = 1

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3 years ago
13) The condenser pressure is 417.4 psig for r-410A and the condenser outlet temperature is 108f. how much subcooling is there i
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Answer:

12°F

Explanation:

Calculation for how much subcooling is there in the condenser

Since the CONDENSING TEMPERATURE for 417.4 psig discharge pressure is 120 degrees (120°) which means that the amount of subcooling that is there in the condenser will be calculated using this formula

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Amount of Condenser subcooling=120°-108f

Amount of Condenser subcooling=12°F

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7 0
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Answer:

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We notice that the force is directly proportional to the charges.

In this problem, initially we have a force of

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GarryVolchara [31]

Answer:

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