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Minchanka [31]
3 years ago
13

Which of the following is an incorrect statement?

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

Answer:

Explanation:

The mechanical advantage of a pulley with three ropes is one.

is incorrect. It is 3

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What do car manufacturers do to reduce the fluid friction acting on a car
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Answer:

The fluid friction or drag can be reduced are minimised by giving special shape called streamlined shape to the objects which Move through fluids like air or water

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3 years ago
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Pilings are driven into the ground at a building site by dropping a 2250 kg object onto them. What change in gravitational poten
den301095 [7]

Answer: 324.135 kJ

Explanation:

Given

Mass of dropping is m=2250\ kg

The initial height of dropping is h_1=16\ m

The final height of dropping h_2=1.3\ m

Gravitational potential energy is the function of height i.e.

\Rightarrow \text{G.E.}=mgh

Change in Gravitational Energy is

\Rightarrow \Delta \text{G.E.}=mg(h_1-h_2)=2250\times 9.8\times (16-1.3)\\\\\Rightarrow \Delta \text{G.E.}=3,24,135\ J\approx 324.135\ kJ

5 0
3 years ago
What is the IMA of a two-gear system if the resistance gear has 54 teeth and the effort
Dafna1 [17]

Answer:

IMA = 2

Explanation:

Given the following data;

Resistance gear = 54 teeth

Effort gear = 23 teeth

To find the ideal mechanical advantage (IMA);

IMA = number of teeth on the resistance gear/number of teeth on the effort gear

Substituting into the equation, we have;

IMA = 54/23

IMA = 2.35 ≈ 2

Therefore, the ideal mechanical advantage (IMA) of this two-gear system is 2.

3 0
3 years ago
A loop with a break in it that prevents current form flowing is called a(n) blank circuit
sergij07 [2.7K]

Answer: it is called a open circuit

Explanation:

3 0
4 years ago
A 4.0-μF capacitor that is initially uncharged is connected in series with a 4.0-kΩ resistor and an ideal 17.0-V battery. How mu
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Answer:

Indian girls

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I don't know what do you expect I don't know this

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3 years ago
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