mechanics, Physics

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in which machines mechanicle adva ntage is greater than one?????

Specific heat, A 3Kg bar of aluminum has to be heated from 25 degrees Cels...

A 3Kg bar of aluminum has to be heated from 25 degrees Celsius to 75 degrees Celsius. how many calories are needed to achieve this temperature increase?

Diffraction of water waves, Diffraction of water waves Let vibrator ...

Diffraction of water waves Let vibrator produce circular wavefronts travelling along (P). Let X, Y be two vertical glass plates immersed in the tank far away from the vib

Production of electricity by pressure, Production of electricity by pressur...

Production of electricity by pressure: Certain crystals and semiconductors produce an emf between two opposite faces when the mechanical pressure on them is either increased or

Gravity free environment vectors and projectiles, Gravity-Free Environment ...

Gravity-Free Environment Assume a zookeeper must shoot a banana from banana cannon to a monkey who hangs from the limb of a tree. This particular monkey has a habit of plummeti

Tan A position, how to arrange a magnetometer in tan a postion

how to arrange a magnetometer in tan a postion

Current and time? help!, If the current in a wire of a CD player is 14.0 mA...

If the current in a wire of a CD player is 14.0 mA, how long would it take for 1.90 C of charge to pass a point in this wire? Answer in units of s

Find resistivity of wire, Q. A managing wire of length 2m has a diameter of...

Q. A managing wire of length 2m has a diameter of 0.4 mm with a resistance of 70 ohm. Find its resistivity. ρ = ( P X πr 2 ) / L                   = ( 70 X 22 X 2 X 10 -4 X 2

Single negatively charged particle a maximum, Where is the electric potenti...

Where is the electric potential because of a single negatively charged particle a maximum? Answer:  One could acquire at this one by looking at the formula for the electri

Cause of difference in length of day and night, Demonstrating the cause of ...

Demonstrating the cause of difference in length of day and night in some places:- Use the similar apparatus as in 6 above. Mark a circle on the ball around its centre to show t

Explain the primary coil of an ideal step-up transformer, The primary coil ...

The primary coil of an ideal step-up transformer has 100 turns and the transformation ratio is also 100. The input voltage the power are 220 V and 1100 W respectively. Calculat