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A series RC circuit has a time constant of 1.0 s. The battery has a voltage of 50 V and the maximum current just after closing the switch is 500 mA. The capacitor is initially uncharged. Calculate t
What is the relationship between the equilibrium constant (Kc)of a reaction and the rate constants for the forward (Kf) and reverse (Kr) reactions?
Two cylindrical resistors are made of the same material. The resistors, with resistance R1 and R2, have different radii, r1 and r2, and different lengths, L1 and L2. What is the relative values (r1/
How do you know how many atoms are there in an element? How do you name an element with the sitting out of amount of protons, electron and neutrons?
The half life for the first order conversion of cyclobutane toethylene,C4H8(g) --->2C2H4(g) is 22.7 s at a particular temperature. How many seconds are needed for the partial pressure of cyclobut
What is the acceleration (a) of the logs rolling down the hill? What is the magnitude of the frictional force of the rolling logs?
Find the emf induced in the toroid when the current decreases to 0.9 A from 2.6 A in a time of 0.13 s.
The activity of a radioisotope is 3000 counts per minute atone time and 2736 counts per minute 48 hours later. What is the half-life of the radioisotope?
Two long wire are connected parallel to each other at closest they ae 20.0 cm apart.what is the magnitude of the magnetic field at a point midway between them if the top one carries a current of 20.
How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is 4.57 x 10^-21 newtons and the distance between two small spheres of equal charge i
Why was it necessaryto wash the crude methylcyclohexenes with aqueous sodium bicarbonate solution? List the manipulations where mechanical loss of productcould have occured.
A space explorer is moving through space far from any planet or star. He notices a large rock, taken as a specimen from an alien planet, floating around the cabin of the ship. Should he push it gent
A person stands on a scale in an elevator. As the elevator starts, the scale has a constant reading of 586 N. As the elevator later stops, the scale reading is 400 N. Assume the magnitude of the ac
25 mL of an unknown vinegar solution is diluted with 225 mL of water. 50 mL of this mixed solution is put into another beaker and diluted with 50 mL of water. In order to figure out the molarity, w
Calculate how much a 8.8 m slab of steel will expand if heated from 59 °C to 183 °C. The coefficient of thermal expansion for steel is 11×10 ^-6 1/(deg text(C)). Express your answer in
A graduated cylinder was filled to 25mls with liquid. Then a solid object weighing 73.5 grams was immersed in the liquid, raising the liquid level to 43.9 mls. What is the density of th
Find the maximum energy stored in the spring bumpers and the velocity of each block at that time.
A sample of oxygen at 65 degrees C under a pressure of 800 torroccupies 425 mL. What volume would it occupy at standard conditions?
A metal rod of length 2.0 m is moved at 6.0 m/s in a direction perpendicular to its length. A 5.0 m T magnetic field is perpendicular to both the rod and its velocity. If the resistance of the rod i
If a fractional distillation failed to separate two component sefficiently, what alternatives would one consider to effect clean separation by distillation?
An 7.00 kg ball, hanging from the ceiling by a light wire 150 cm long, is struck in an elastic collision by a 2.00 kg ball moving horizontally at 3.00 m/s just before the collision. Find the tensio
A uniform magnetic field points vertically upward; its magnitude is 0.753 T. An electron with kinetic energy 7.1*10^-18 J is moving horizontally eastward in this field. What is the magnetic force ac
A cannonball is catapulted toward a castle. The cannonball's velocity when it leaves the catapult is 48 m/s at an angle of 40° with respect to the horizontal and the cannonball is 7.0 m above t
Explain why the boiling point of a two-component mixture rises slowly throughout a simple distillation when the bioling point difference are not large.
Find the magnetic flux through an individual turn of the coil if the magnetic field makes an angle of 45 degrees with the normal to the plane of the coil.