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MrRissso [65]
3 years ago
14

Answer question quick

Physics
1 answer:
Anettt [7]3 years ago
5 0

Answer:

Yes , insulation has no role

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The engine in an imaginary sports car can provide constant power to the wheels over a range of speeds from 0 to 70 miles per hou
Inessa05 [86]

Answer:

a) 4.40 s

b) 2.20 s

Explanation:

Given parameters are:

At constant power  ,

initial speed of the car, v_0=0

final speed of the car, v=32 mph

At full power,

initial speed of the car, v_0=0

final speed of the car, v=64 mph

a)

At constant power, KE = \frac{1}{2} mv^2

At full power, KE = \frac{1}{2} m(2v)^2

So KE_f = 4KE_i

So, time to reach 64 mph speed is 4 times more than the initial time

t = 4*1.10 =4.40 s

b)

v=v_0+at\\a=\frac{v-v_0}{t}=\frac{32-0}{1.1/3600}=104727.27 miles/hours^2

For final 64 mph speed,

v=v_0+at\\t=\frac{v-v_0}{a}=\frac{64-0}{104727.27} = 6.111*10^{-4} hours = 6.111*10^{-4}*3600=2.20 s

7 0
3 years ago
Which term describes an observed pattern in nature without any attempt to explain it? a) scientific law b) scientific hypothesis
Gwar [14]
Scientific law. Hope that helps you out some!
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3 years ago
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Which of the following has mass?<br> a. Force<br> b. Space<br> c. Matter<br> d. Light
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The matter has mass.........
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What is one of the hardest tasks for researchers ?
bulgar [2K]
To know if their research is correct or matches their hypothesis.
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What is the total resistance of circuit when resistors connected in series and parallel?
Lostsunrise [7]

Explanation:

In series combination

R = R1 + R2 + R3 + ...+ Rn

In parallel combination

1/R = 1/R1 + 1/R2 + 1/R3 + ...+ 1/Rn

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3 years ago
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