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A 9.0*10^-2kg ice cube at 0.0 degrees celcius is dropped into a styrofoam cup holding .35 kg of water at 13 degrees celcius. Find the amount of ice (if any) remaining
find the net ionic equation for BaCl2(aq) + NaOH(aq) --------->Ba(OH)2(?) +NaCl(aq) is the Ba(OH)2 a solid or aqueous in water? please first show the ionic equation then cancel out spectator ion
A hill that has a 32.1% grade is one that rises 32.1 m vertically for every 100.0 m of distance in the horizontal direction. At what angle is such a hill inclined above the horizontal
Two teams of nine members each engage in a tug of war. what is the tension in the section of rope between the teams
A 100 kg running back carries the ball forward with a speed of 9 m/s. He is hit head on in the air at the goal line by a 130 kg defensive back running in the opposite direction at 7 m/s
An object of mass 0.77 kg is initially at rest. When a force acts on it for 2.9 ms it acquires a speed of 16.2 m/s. Find the magnitude of the average force acting on the ball
A car is moving in a circular path. At a certain instant, it has zero tangential acceleration and a non-zero centripetal acceleration
Estimate the force on a 145-gram baseball if it hits the bat at 50 miles per hour and stays in contact with the bat for 0.1 second
In a vacuum chamber the pressure is lowered to 1.0 x 10-10 mm Hg. how many molecules are in 1 cm3 in this chamber
A 200-pound boy lifts a 40-kg box off of the floor 1.3 meters in 0.7 seconds. determine Which boy is more powerful
A lens is coated with material of indexof refraction 1.38. What thickness of coating should be used to give maximum transmission
You throw a glob of putty straight up toward the ceiling, which is 3.00m above the point where the putty leaves your hand. What is the speed of the putty just before it strikes the ceiling
In the fastest measured tennis serve, the ball left the racquet at 73.14 {\rm{ m/s}}. How far did the ball travel during the serve
Starting from rest, an elevator has a constant acceleration of 0.621 m/s2 for a period of 6.25 sec., find the displacement of the elevator
A small sphere with a mass of 3.00×10^?3g and carrying a charge of 5.20×10^?8C hangs from a thread near a very large, Find the angle of the thread
Starting from rest, a 98-kg firefighter slides down a fire pole. How far did he slide down the pole
A hollow, conducting sphere with an outer radius of 0.260m and an inner radius of 0.198m has a uniform surface charge density of +6.70×10^?6 C/m^2. What is the new charge density on the outsid
A bicyclist rides 3.97 km due east, while the resistive force from the air has a magnitude of 7.84 N and points due west. Find the work done by the resistive force during the round trip
Explain why there is no distinction between low and high-spin arrangements for an octahedral d8 metal ion. (b) Discuss the factors that contribute to the preference for forming either a high- or a
A rescue helicopter lifts a 70.8-kg person straight up by means of a cable. What is the tension in the cable
You measure an electric field of 1.37×106N/C at a distance of 0.159m from a point charge. What is the electric flux through the surface of a sphere
Calculate the moles of ammonia produced (e) calculate the partial pressures of all species in the system (f) the total pressure in the system
When at rest, two trains have sirens that emit a frequency of 300 Hz. The trains travel toward one another, What is the speed of the second train
Write the correct equation accounting for the ready formation of metallic deposit on placing a magnesium strip into 0.1 M iron nitrate
When 2.45g of an unknown weak acid (HA) with a molar mass of 85.0 g/mol is dissolved in 250.0 g of water, the freezing point of the resulting solution is -0.255 C. Calculate Ka for the unknown weak