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Kinetic ENERGY = 1/2mx^2

Explanation:

According to the property of elasticity the spring will INCREASE in length until a CONSTANT force is APPLIED and will return to its original form after removing force

ong>Answer:

FAITHFUL amplification can only occur on TRANSISTORS with a forward biased emitter-base junction, a reverse biased collector-base junction, and proper zero signal collector current. WITHOUT the correct BIAS, the TRANSISTOR will not operate efficiently and cause its output to distort.

ong>Answer:

OBJECT Falling from Rest

As an object falls from rest, its gravitational potential energy is CONVERTED to kinetic energy. Conservation of energy as a tool permits the calculation of the velocity just before it HITS the surface. K.E. = J, which is of course equal to its initial potential energy.

ong>Explanation:

Voltage, electric potential difference, electric pressure or electric TENSION is the difference in electric potential between two points, which is defined as the work needed per UNIT of CHARGE to move a test charge between the two points.

Formula -

V - IR

V: Voltage

I: Current

R: Resistence

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ong>ANSWER:

Radian is equal to 57.296 DEGREES

A

Explanation:

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CGS unit of force is dyne

ong>Answer:

The electrical potential DIFFERENCE is defined as the AMOUNT of work done to carrying a UNIT charge from one point to another in an electric field. In other words, the potential difference is defined as the difference in the electric potential of the two CHARGED bodies. Unit: The unit of potential difference is volt.

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ong>Answer:

Sound is CAUSED by the simple but rapid mechanical vibrations of various elastic bodies. These when MOVED or struck so as to vibrate, COMMUNICATE the same kind of vibrations to the auditory nerve of the ear, and are then APPRECIATED by the mind.

ong>Answer:

Contact force :

1]contact force REQUIRES a CONNECTION between

the interacting OBJECTS.

field force :

1)field force can OCCUR over a distance.

Contact force :

2]force is a mass time ACCELERATION.

field force :

2)its space has the ability to apply a force

Contact force :

3] eg. - frictional force.

field force :

3) eg. - gravitation force.

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ong>ANSWER:

ANSWER

This is an important RESULT to remember. Two vectors at 120 DEGREE produce a vector equal to their MAGNITUDE. Let their magnitude be a,  

Resultant = a =  

(a  

2

+a  

2

+2×a×a×cosθ)

​  

 = a  

(2+2cosθ)

​  

 => cosθ =−  

2

1

​  

=>θ = 120  

0

Explanation:

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ong>Answer:

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ong>ANSWER:

The common-collector amplifier is also known as an emitter-follower. The OUTPUT voltage on a common-collector amplifier will be in PHASE with the input voltage, MAKING the common-collector a non-inverting amplifier circuit. The CURRENT gain of a common-collector amplifier is equal to β plus 1.

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Explanation:

SORRY

ong>Explanation:

The REFRACTIVE INDEX of a TRANSPARENT medium is always greater than 1,it can not be less than 1 because SPEED of light in any medium is always less than that in vacuum.

ong>ANSWER:

At room temperature conditions, butane is a GAS with the chemical formula of C4H10 C 4 H 10 .

acceleration

Explanation:

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FANTASTIC question

Explanation:

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This is your answer...

POTENTIAL difference is the energy used between two points in a CIRCUIT, therefore it is MEASURED between two points either side of a component. We describe this as the potential difference measured ACROSS a component.

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Your answer is FREQUENCY

ong>ANSWER:

Since the DIMENSIONS of F and mV²/r are EQUAL... so equation is DIMENSIONALLY correct

ong>ANSWER:

We should balance a chemical EQUATION because the LAWS states the the REACTANT is equal to the product!!!!

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Explanation:

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MOMENTUM...........

ong>ANSWER:

YES u can

Explanation:

As its physical state is CHANGING

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4.2 CALORIES ..................

Given :

• Current flowing, I = 0.5 A
• Time for which current is flowing, t = 6 min

To FIND :

• CHARGE passed through the wire, Q = ?

Formula required :

• Relation between Current (I) , Charge (Q) and time (t)

      I = Q / t

[ Where I is in Ampere, Q is in Coulomb, and t is in seconds ]

• Current is defined as the rate of low of Charge.
• SI unit of Current : Ampere
• SI unit of Charge : Coulomb.

Solution :

Converting time given in min into seconds

→ t = 6 min

→ t = 6 × 60 sec

→ t = 360 sec

Calculating charge through the wire

Using formula

→ I = Q / t

→ 0.5 = Q / 360

→ Q = 0.5 × 360

→ Q = 180 C

therefore,

• Charge passed through the wire is 180 Coulomb.

Hence,

OPTION (C) 180 C is correct.

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Explanation:

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ong>EXPLANATION:

The MOLAR mass of methane is 16 g/mol.

1 molecule of methane contains 5 atoms

1 mole of methane contains 6.02×10

23

molecules.

Number of atoms PRESENT in 1.6 g of methane is:

6.02×10

23

×

16g/mol

1.6g

×5=3.01×10

23

atoms.

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just GRAVITATIONAL FORCE

ong>Answer:

Planning is the process of thinking about the activities required to ACHIEVE a desired goal. It is the first and foremost activity to achieve desired results. It involves the creation and maintenance of a plan, such as psychological ASPECTS that require conceptual SKILLS.

ong>Explanation:

In electronics, biasing is the SETTING of initial OPERATING conditions (current and voltage) of an active device in an amplifier. ... This current or voltage is a bias. The AC SIGNAL applied to them is superpositioned on this DC bias current or voltage.

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rtant topics covered in this part are Accuracy, PRECISION, Errors of Measurements, Types of Errors, ABSOLUTE ERROR, Relative Error and Percentage Error, Combination of Errors, Significant Figures, RULES for Arithmetic Operations with Significant Figures. Other important topics such as Units, Types of Units (FUNDAMENTAL Units & Supplementary Units), Measurements of Length, Mass

ong>Answer:

Friction stops OBJECT from sliding.If there will be no force of friction than objectsnwill slide down to LOWESTPOINT.

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ong>EXPLANATION:

SPEED of SOUND c ≈ 331.3 + (0.6 × ϑ) in m/s.

That gives e.g. at a temperature of ϑ = 20°C a speed of sound of: c ≈ 331.3 + (0.6 × ϑ) = 331.3 + (0.6 × 20) = 343.3 m/s.

VISCOSE

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d NONE of these is the CORRECT answer

Since REFRACTIVE INDEX is a ratio , it has no unit .

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