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Eva8 [605]
3 years ago
13

A dog is running at 15 m/s and then slows down to 10 m/s. It takes him two seconds to do this. What is the dog's acceleration

Physics
1 answer:
OLga [1]3 years ago
6 0

Explanation:

a = (Vf-Vi)/t

= (10m/s - 15m/s)/2s

a = -5 / 2 m/s^2

• so the dog diaccelerate at the rate of 5/2 m/s^2

hope it helps

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A reversible Carnot engine has an efficiency of 30% and it operates between a heat source maintained at T 1 , and a refrigerator
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To solve this problem we will apply the concepts related to the thermal efficiency given in an engine of the Carnot cycle. Here we know that efficiency is given under the equation

\eta = 1 - \frac{T_2}{T_1}

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According to the statement our values are:

\eta = 0.3

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A

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Which sector is not part of the circular flow model of the economy ?
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It has been suggested that rotating cylinders several miles in length and several miles in diameter be placed in space and used
stepladder [879]

Answer:

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Explanation:

Given the data in the question;

we know that the expression for the linear acceleration in terms of angular velocity is;

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ω = √( a_{c} / r )

where r is the radius of the cylinder

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ω = √( 9.8 m/s² / 3909.87 m )

ω = √0.002506477 s²  

ω = 0.0500647 ≈ 0.05 rad/s  

we know that; 1 rad/s = 9.5493 revolution per minute

ω = 0.05 × 9.5493 RPM

ω = 0.478082 RPM  

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ω = 0.478082 × 60

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7 0
3 years ago
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yulyashka [42]

Answer:

Single Compound

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