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If 23.6 g of gold is deposited on the negative electrode of an electrolytic cell in a period of 2.99 hours, then what is the current through the cell during this period? (Assume that the gold ions carry one elementary unit of positive charge and the atomic mass of gold is 197.0 g/mol.)
Calculate the magnitude of the angular momentum of the Mars in a circular orbit around the sun. The Mars has mass 6.42×10^23 kg , radius 3.40×10^6 m , and orbit radius 2.28×10^11 m. The planet completes one rotation on its axis in 24.5 hours and one ..
imagine a very heavy cube of pure gold that is 1.40 m on a side. approximate the atoms in this cube as little cubes.
A block is shoved up a 22 slope with an initial speed of 1.4 . The coefficient of kinetic friction is 0.70. How far up the slope will the block get
A spacecraft is in a circular Earth orbit at an altitude of 5300km . By how much will its altitude decrease if it moves to a new circular orbit
What is the velocity of 5.5kg object with a force of 2.5N while it reaches 6.0 meters, assuming the velocity at zero meters is zero.
A parallel-plate capacitor with plates of area 441 cm2 is charged to a potential difference V and is then disconnected from the voltage source. When the plates are moved 5.02 mm farther apart, the voltage between the plates increases by 81.0 Volts. W..
Your task in physics lab is to make a microscope from two lenses.One lens has a focal length of 12 {\rm cm}, the other a focal lengthof 2.5 {\rm cm}. You plan to use the morepowerful lens as the objective, and you want its image tobe 16 {\rm cm} f..
An automobile has a total mass of 1700 kg. It accelerates from rest to 40 km/h in 10 s. Assume each wheel is a uniform 32 kg disk. determine the total kinetic energy of the automobile
An 8.00-mH inductor and a 2.00ohm resistor are wired in series to an ideal battery. A switch in the circuit is closed at time 0, at which time the current is 0. determine the time constant for the circuit
an certain resistor dissipates 0.5 w when connected to a 3 v potential difference. when connected to a 1 v potential
A point source of light is submerged 2.2 m below the surface of a lake and emits rays in all directions. What is the maximum radius that this circle could have
In exercise physiology studies it is sometimes important to determine the location of a person's center of mass. How far from the woman's feet is her center of mass
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