A galvanometer has full scale deflection current of 500 micro-Ampere, and resistance of 100 Ohm. Shunt with what resistance has to be combined with the galvanometer in order to transform it to an ammeter able to measure current of 10 Ampere full scale?

Rs = (Rg*Ig) / ( I - Ig ) = (100 * 500 *10^-6) / (10 - 500*10^-6) = 0.005 ohm
Ig = 500*10^-6 A
Rg = resistance of galvanometer = 100 ohm
I = 10 A

Student uses the circuit shown in task [6] in the text to find the resistance of a voltmeter, and obtains that at 2 Volt reading on the voltmeter, the galvanometer reads current of 400 micro-Ampere. What is the voltmeter resistance?

R = (V/Ig) - G = (2/400*10^-6) - 400*10^-6 = 5000 ohm
V = 2 V
Ig = 400 * 10^-6 A

The dissociation energy of a molecule is the energy required tobreak apart the molecule into its separate atoms. the dissociationenergy for a particular molecule is 5.48 x 10-18 j.suppose that this energy is provided by a single photon. determinethe (a) wavelength and (b) frequency of the photon

Air is held within a frictionless piston-cylinder container, which is oriented vertically. the mass of the piston is 0.45 kg and the cross-sectional area is 0.0030 m2. initially (state 1) the pressure of the gas is sufficient to support the weight of the piston as well as the force exerted by the atmospheric pressure ( 101.32 kpa). the volume occupied by the air within the cylinder in state 1 is 1.00 liter. one end of a spring (with spring constant k = 1000 n/m) is attached to the top of the piston, while the other end of the spring is attached to a stage that can move vertically. initially the spring is undeflected and therefore exerts no force. then the stage is then moved quasistatically downward a distance of 10.0 cm, at which point the system reaches state 2. the piston-cylinder is not insulated; rather it remains in diathermal contact with the surroundings, which are at a constant temperature of 300 k. what is the change of pressure within the container?

John throws .4 kg ball with velocity of 18 m/s. hits .2 kg bottle and bottle flies 25 m/s. how fast is ball traveling after hitting the bottle?