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The edge of a cube consist of equal resistors of resistance R, which are joined at the orners, let a battery be connected to two opposite corners of a face of cube. what is the efective resistance?
You throw a 29.7 rock vertically into the air from ground level. You observe that when it is a height 16.4 above the ground, it is traveling at a speed of 21.2 upward. What is the total mechanical e
A cup of chicken soup (500.0 g) is heated from 20 degrees C to 98degrees C in a microwave oven that operates at wavelength = 1.55 x10-2 m. How many moles of photons are absorbed by the soup? As
A 8.97 g sample of C4H6, is mixed with 21.8atm of O2 in a 28.0 L combustion chamber at 182.88°C. The combustion reaction to CO2 and H2O is initiated and the vessel is cooled back to 182.
A superconductor wire has a critical temperature of 90K. If the wire is at 77K, and an electromotive force of 6.0V is attached to the wire, how much energy is lost to heat per second if a current of
A 2.3995 g mixture containing malachite and an inertingredient lost 0.2997 g of H2O and CO2 when decomposed by heating to constant m
When 100.0 mL of a solution of an acid, HA, and 100.0 mL of asolution of a base, BOH, are mixed in a calorimeter, thetemperature increases from 21.7 degrees Celsius to 35.8 degrees Celsius. The heat
0.12g of rock salt (NaCl and impurities) was dissolved in water and titrated with 0.1 M silver nitrate. 19.7 mL was required to titrate all the chloride ion.
What is the nuclide symbol for the nucleus that contains 6 protons and 7neutrons? (Enter the mass number in the first raised box, theatomic number in the second lower box, and the element's symbol,w
If 19.0 mL of 4.18E-2 Mbarium hydroxide are required to neutralize the hydrobromic acid, what is the percent by weight of hydrobromic acid in the mixture?
A charged conducting sphere of radius 18cm has 10 to the 12th power electrons removed from its surface. What is the surface charge density of the sphere?
A hot air balloonist puts 125,000 liters of air into their balloon at 27oC and atmospheric pressure of1. When they heat the air to 200o C at constant pressure, what is the final volume of the air
An aluminum nucleus has 13 protons and 14 neutrons. A copper nucleus has 29 protons and 34 neutrons. What is the force of repulsion between an aluminum nucleus and a copper nucleus when they are sep
An electronic flash attachment for a camera produces a flash by using the energy stored in a 770 µF capacitor. Between flashes, the capacitor recharges through a resistor whose resistance is c
In a heart pacemaker, a pulse is delivered to the heart 76 times per minute. The capacitor that controls this pulsing rate discharges through a resistance of 1.8 x 106. One pulse is delivered every
A simple Atwood's machine uses two masses, m1 and m2. Starting from rest, the speed of the two masses is 9.0 m/s at the end of 9.0 s. At that instant, the kinetic energy of the system is 80 J and ea
A battery has an internal resistance of 0.9. a number of identical light bulbs, each with a resistance of 41.4, are connected in parallel across the battery terminals. the terminal voltage of the ba
Two identical blocks made of extremely hard metal collide with equal and opposite velocities. Is such a collision closer to being completely inelastic? Where does any lost kinetic energy go? Assumin
A 1.80 kg block slides on a rough, horizontal surface. The block hits a spring with a speed of 1.85 m/s and compresses it a distance of 13.0 cm before coming to rest. If the coefficient of kinetic f
What is the combines mass of 225.08g. When a liguid is added to the beaker the combined mass is 238,544 g. what is the mass in grams of the liquid?
A 24 kg block slides with an initial speed of 14 m/s up a ramp inclined at an angle of 25o with the horizontal. The coefficient of kinetic friction between the block and the ramp is 0.6. Use energy
A current of 2.50 A was passed through an electrolytic cell containing molten CaCl2 for 4.50 hours. How many moles of calcium metal shoild be deposited?
Catching a wave, a 71 kg surfer starts with a speed of 1.3 m/s, drops through a height of 1.95 m, and ends with a speed of 8.2 m/s. How much nonconservative work was done on the surfer?
What is the physical basis for angle-bending strain? What might one do to verify that the global strain-energy minimum has been identified for a compound?
An electron with velocity v= 1.0 x 106 m/s is sent between the plates of a capacitor where the electric field is E = X V/m. If the distance the electron travels through the field is 1.0 cm, and it d