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A (smooth) rope of length L and mass m is placed above a hole in a table. One end of the rope falls through the hole, Find the mechanical energy lost from the rope as the end of the rope leaves the ta
A worker pushes a sled with a force of 50 N over a level distance of 7.0 m. what net work is done on the sled
A missile of mass 1.20 102 kg is fired from a plane of mass 4.85 103 kg initially moving at a speed of 3.35 102 m/s. what is the final velocity of the plane?
determine the downward force of the rails on the car when the upside-down car is at the top of the loop
If 3.0 L of oxygen gas at 177°C is cooled at constant pressure until the volume becomes 1.50 L, then what is the final temperature
A simple Atwoods machine uses two masses, m1 and m2. Starting from rest, the speed of the two masses is 2.0 m/s at the end of 5.0 s. Determine the values of m1 and m2
A sample of N2 (g) occupies a volume of 42.0 mL under the existing barometric pressure. Increasing the pressure by 85 mmHg reduces the volume to 37.7 mL. What is the prevailing barometric pressure i
The baseball bat has a mass of .82kg and is .86m long. What is the baseball bat angular acceleration when it has reached 20 degrees from the verticle
A 50.0 L cylinder contains nitrogen gas at a pressure of 21.5 atm. The contents of the cylinder are emptied into an evacuated tank of unknown volume. If the final pressure in the tank is 1.55 atm, t
A 3.65 uf capacitor, a 9.25 uf capacitor, and a 6 V battery are connected in parallel to make a complete circuit. what is the voltage of each capacitor
Calculate the height of a column of liquid benzene (d= 0.879 g/cm3), in meters, required to exert a pressure of 0.970 atm.
A 15 kg box is pulled horizontally by a 20 N force on a frictionless surface. What is the change in kinetic energy of the box
calculate the standard Molar Enthalpy Change for the reaction in the reaction endothermic or exothermic
A 12.0-V battery produces 215mA when it's across a 42.0? load. What's the battery's internal resistance
A 40 g bullet traveling 500 m/s penetrated 5 cm into a tree trunk. what was the retarding force on the bullet
A net force of 7 newtons acts on an object that weighs 49 newtons. What is the resulting acceleration
A 200 N object is supported by two ropes. Rope 1 makes an angle of 35 degrees with the horizontal, What is the amount of tension in each rope
A 10kg mass that is moving at 15m/s hits a stationary 10kg mass. The collision is elastic. what is the total momentum BEFORE the collision
What is the net upward force on an airplane wing of area 27.8 m2 if the speed of air flow is 242 m/s across the top of the wing
The reaction of calcium oxide with the pollutant, sulfur trioxide, to produce calcium sulfate has been proposed as one way to remove the the SO3 from the smoke resulting from burning high sulfur coa
A 2.5 cm-long horizontal wire segment has mass 0.15 g and carries a current sufficiently large that it levitates when the segment is in a region of B field upward with magnitude 1.5 T
A maximum of 1.89 mg of AgCl will dissolve in 1.00 L of solution at 25.0 C. A maximum of 5.26 mg of AgCl will dissolve in 1.00 L of solution at 50.0 C. Use this information to calculate standard ent
At a particular instant of time a light beam traveling in the positive x direction, find the direction of the electric field and explain
Mercury is a poisonous metal that is used in thermometers. When mercury is at temperatures below its freezing point it has a simple cubic unit cell. How many atoms of Hg are present in each unit cel
Using the Nernst equation, calculate the effect on the cell potential of increasing the Fe2+ ion concentration from 1.0 M to 2.0 M for each of the following reactions. The concentration of the other