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Three 1.50-V cells, each with an internal resistance of 0.0500?, are connected in series to form a battery with a current of 0.850A in each cell.
A. Find the current in the external circuit.B. What is the emf of the battery.C. Find the internal resistance of the battery.
calculate the total mechanical energy of the glider at any point in its motion. Calculate the maximum speed of glider.
A 10.0 cm radius piston compresses a gas isothermally from a height of 15.0 cm to 2.50 cm at a constant pressure of 2.0 atm. How much heat was added to the gas
A 1170 kg block of granite is pulled up an incline with l = 40.0 m at a constant speed of 1.76 m/s by a steam winch. What is the power of the winch
The Big Bang Theory suggests leftover background radiation. Find the wavelength of this radiation
A 2.0g metal ball that carries a charge of 10uC is placed into an electric field, what is the electric potential difference between point A and point B
The nucleus of the polonium isotope 214^po (mass 214u ) is radioactive and decays by emitting an alpha particle, what is the recoil speed of the nucleus that remains after the decay
A worker pushed a 27 kg block9.2m along a level floor at constant speed with a force directed27°below the horizontal. If the coefficient of kinetic friction is 0.20, how much work was done by the worker's force?
a ball (mass=m) moving in the positive x direction with speed v collides with a block (mass=M) initially at rest, compute the mass of the block
The red line of the Balmer series in hydrogen (? = 656.3 nm) is observed to split into three different spectral lines with ?? = 0.07 nm between two adjacent lines when placed in a magnetic field B. What is the value of B if ?? is due to the energy sp..
A 400 g lemming (does anyone remember that old computer game?) waddles horizontally off a small 4.90 m high cliff with a speed of 0.5 ms-1.How far from the base of the cliff will the lemming land? What will be the lemmings speed upon landing.
Four identical particles, each with mass m = 10-6 kg and charge Q = 10-6 C, are initially at the four corners of a square with side-length a = 0.01 m. what is the final speed of the released particle once it is very far away
A transverse wave propagates in the positive x-axis with a wavelength of 0.3m and a period of 0.001s. what is the frequency of this wave
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