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A 37.6 kg crate rests on a horizontal floor, and a 76.1 kg person is standing on the crate. Determine the magnitude of the normal force
If there is a potential difference of V between the metal and the detector, what is the minimum energy that an electron must have
This precipitate is removed and excess H SO is then added to the solution which forms a precipitate. This precipitate is removed and excess NaOH is added to the supernatant until the solution is str
A 1530 kg car is traveling with a speed of 14.5 m/s. What is the magnitude of the horizontal net force
A diver springs upward from a board that is 3.15 meters above the water. Determine her initial speed as she leaves the board
what will be the final concentration of the seawater at 20 °C when reverse osmosis stops? Assuming that seawater has a total ion concentration (a.k.a colligative molarity) of 1.10 Mc, calculate
In an action movie, the heroine is supposed to jump with a motorcycle from the roof of one skyscraper to another one. what minimum initial speed would she need to make the jump
You carry out a titration of a pure weak triprotic acid and only see two major pH jumps. One at 10.0 mL and one at 15.0 mL. At what volume is the other equivalence point
The electric field on the axis of a uniformly charged ring has magnitude 350kN/c at a point 6.0cm from the ring center. Find the rings charge in nC
A bullet is fired from a rifle that is held 1.69 m above the ground in a horizontal position. Calculate the time it takes for the bullet to strike the ground
The mixture was stirred, causing all of the sample to dissolve. The excess HCl in the solution required 94.9 mL of 0.128 M NaOH for complete neutralization in a titration. What was the molecular for
You jump from the top of a boulder to the ground 1.85 m below. Calculate your deceleration on landing
Water leaks out of a dam through a small hole 4.2 m below the level of the water behind the dam. Find the speed of the water emerging from the hole
Eventually, the amounts of the three species do not change further; the system has reached equilibrium. (at this point, approximately 22% of the HI has decomposed.) Describe what is happening in thi
To save on heating costs, the owner of a greenhouse keeps 580 kg of water around in barrels. What is the minimum ampere rating of an electric heating system
If you are uncertain as to which layer in the separatory funnel is aqueous when extracting an aqueous solution with an organic solvent, how could you settle the issue
A block of weight 46.7 N is hanging from a rope. The tension in the rope is 32.5 N, pulling upward on the block. What is the magnitude of the tension in the rope
The electric field 25cm from a long wire carrying a uniform line charge density is 1.8kN/C. What will be the field strength 37cm from the wire
Aqueous solutions of ammonium sulfide, (NH4)2S, and Hg(NO3)2 react to produce HgS and NH4NO3. a. Write the overall balanced equation for the reaction. Indicate the state (s, aq) for each compound. b
Find the magnitude of the potential difference between two points located 1.1m apart in a uniform 630 N/C electric field
Visible light of wavelength 480 nm is incident on a diffraction grating with a slit spacing of 0.003 mm
The gravitational force exerted on a baseball is 2.25 N down. A pitcher throws the ball horizontally with velocity 15.5 m/s by uniformly accelerating it along a straight horizontal line for a time i
A large spool in an electrician's workshop has 80 m of insulation-coated wire coiled around it. What is the length of wire remaining on the spool
The Royal Gorge bridge over the Arkansas River is 310 m above the river. A 61-kg bungee jumper has an elastic cord with an unstressed length of 60 m attached to her feet. Assume that, Find the maxim
describe why benzoic acid and 4-nitroaniline must be air dried for such a long time or placed in an oven before taking a final mass and finding the melting point