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If an error in the measurement of radius of a sphere is 2% then the error in the determination of volume of sphere will be

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An object placed on a scale is riding in an elevator. What is the measurement of mass taken by an observer in the elevator if the mass of the object at rest is 45.6 kg? Assume that the acceleration of the elevator is directed upward and is equal to 2.72 m/s2.

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A capacitor of value 10 micro Farads is connected in series with a resistor of value 10 ohms. Calculate the value of the time constant

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An electronic engineer needs a particular value of capacitance for his new design for the car courtesy light to dim at a particular rate when the car is locked remotely using a wireless key.

He needs a capacitance of exactly 12 micro Farads. Which of the four possibilities will give him that value?

1. Two capacitors in series, each of value 6 microFarads

2. Two capacitors in parallel, each of value 6 microFarads

3. Two capacitors in series, one of value 4 microFarads and the other of value 2 microFarads.

4. Two capacitors in parallel, each of value 24 microFarads

He needs a capacitance of exactly 12 micro Farads. Which of the four possibilities will give him that value?

1. Two capacitors in series, each of value 6 microFarads

2. Two capacitors in parallel, each of value 6 microFarads

3. Two capacitors in series, one of value 4 microFarads and the other of value 2 microFarads.

4. Two capacitors in parallel, each of value 24 microFarads

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You are required to specify the power rating of a resistor, R1, to be used in a car engine management system, so that an order can be placed for the component (resistor).

the resistance required is 2Ω. The maximum current that will be flowing in the resistor will be 10A.

You only have four ratings to choose from. Select the most appropriate power rating for this resistor.

the resistance required is 2Ω. The maximum current that will be flowing in the resistor will be 10A.

You only have four ratings to choose from. Select the most appropriate power rating for this resistor.

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If a right angled triangle label A B C and A=3 B=4 what is C equal to

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The ratio of pressure force L to friction force D for an object A in contact with object B is L/D = 10. what is the coefficient of friction of A/B?

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how to find resultant force when 3 forces act on a body

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A spring (k = 764 N/m) is attached to the ceiling of an elevator. How much will the spring stretch (relative to its unstretched length), if a 6.6 kg object is attached to the lower end and the elevator is accelerating downward at 0.41 m/s2?

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the speed of a train is reduced from 16.6667 m/sec at the same time as it travels a distance of 450 m if the retardation is uniform, find how much further it will travel before coming to rest?

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