evaluate the expression 04.

Evaluate the expression |0.4|. => - 0.4 or 1 or 0.4 or 0..

The length of the unit cell edge of a body centered cubic metal crystal is 352 pm. Calculate the radius of an atom of the meta..

Calculate the ionisation potential for a lithium ato..

The charges shown in the figure are stationary. Find the force on 4 m C charge due to the other two. ..

Charges of +20 esu, +9 esu and -5 esu are placed at the corners A, B and C respectively of a D ABC shown in the figure. Calculate the potential at the midpoint O of BC. ..

A solenoid 50cm long has 4 layers of windings of 350 turns each. The radius of the lowest layer is 1.4cm. If the current carries is 6.0A, estimate the magnitude of B (a) near the centre of the solenoid on it's axis and off it's axis (b) near it's ends on it's axis (c) outside the solenoid near it..

A steady current of 10.0 A is passed through a water voltameter for 300s. Estimate the volume of H 2 evolved at standard temperature and pressure. Use the known value of Faraday's constant. Relative molecular mass of H 2 is 2.016 and molar volume = 22.4 litres (volume of 1m of an ideal gas at ST..

The length of the Snake river is about 1.04 × 10 3 miles. Express the length in standard form. => 140 miles or 1,040 miles or 1,400 miles or 104 miles..

What is the drift velocity of electrons in a copper conductor having a cross-sectional area of 5 x 10 - 6 m 2 if the current is 10A? Assume that there are 8 x 10 2 8 electrons/m 3 ..

A copper disc of radius 10 cm rotates 1200 times per minute with its plane perpendicular to a uniform magnetic field. If the induced EMF between the edge and centre of disc is 6.284 mV, find the density of the fiel..