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A stone of mass M sits at rest on a spring near the surface of the Earth. If the spring is compressed a distance d by the weight of the stone, what is the spring constant k?
What is the major product formed when 1-bromo-2-methyl cyclohexane undergoes elimination reaction when treated with sodium methoxide?
An infinitely long line of charge has a linear charge density of 4.50×10-12 C/m. A proton is at distance 19.0 cm from the line and is moving directly toward the line with speed 1900 m/s.
A car travels east at 95km/h for 0.2hours. It then travels 30.0 degrees east of north at 110km/h for 0.2hours. What is the average speed for the trip?
Explain why sodium hydroxide volumes needed to titrate the dilute nitric acid andglycolic acid are basically the same, or why they are verydifferent. Shouldn't the stronger nitric acid require more
A conducting wire of circular cross section formed of a material that has a mass density of 2.7 g/cm^3 is placed in a uniform magnetic field with the axis of the wire perpendicular to the direction
A projectile is launched from ground level to the top of a cliff which is 195m away and 155m hight. if the projectile lands on top of the cliff 7.6s after it is fired. Find the initial velocity of t
Will a slower chemical reaction be expected to give a semilog absorbance/time plot with a slope that is more shallow or steeper (ie closer to or further from the horizon) than one that is faster?
A particle of ink in an ink-jet printer carries a charge of -8X10^-13 C and is deflected onto paper with a force of 3.2X10^-4 N. Find the strength of the electric field.
Naphthalene has a melting point of 80.5 degrees celsius, is soluble in nonpolar solvents but not water, and does not conduct an electric current. Is naphthalene likely an ionic compound or a c
A girl with mass m1 and a sled with mass m2 are on the frictionless ice of a frozen lake, a distance d apart but connected by a rope of negligible mass. The girl exerts a horizontal force with magn
Determine KM and Vmax for the enzyme. For each inhibitor,determine the type of inhibition as well as the constants Ki and/or Ki′. What additional piece of information is required to calculate
Calculate the specific heat capacity (J/g oC) of aluminum, if a 749 g sample of aluminum has a temperature change of-367.00 oC when it lost 247700 J of heat energy.
The diameter of the base of a cylindrical chimney is 6', its height is 30' and its weight is 1200 lbs. What should be the smallest tie down force that will prevent its toppling in an earthquake whos
The phenolphthalein/hydroxide reaction is typical of most chemical reactions in its response to temperature. Will it, therefore, be slower or faster at 5oC in comparison to its rate atroom temperatu
A tuning fork having a name plate frequency of 512 hz falls from an over pass as it is struck on the railing a Physics student hears the frequency as 524 hz just as it approaches him below the overp
You are the ground control commander of a 2000 kg scientific rocket that is approaching Mars at a speed of 25,000 km/hr. It needs to quickly slow to 15,000 km/hr to begin a controlled descent to the
A 31.7-kg crate rests on a horizontal floor, and a 70.2-kg person is standing on the crate. Determine the magnitude of the normal force that (a) the floor exerts on the crate and (b) the crate exert
What is the most general way to explain the reaction of acids and bases? Hint: Think of this in terms of subatomic particles.
A lamp hangs vertically from a cord in a descending elevator that decelerates at 1.7 m/s2. (a) If the tension in the cord is 91 N, what is the lamp's mass? (b) What is the cord's tension when the el
When an equetion is used to calculate the amount of product that will form during a reaction, then the value obtained is called the?
Calculate the concentration of Pb2+ ions in solution when PbCl2 is dissolved in water. The concentration of Cl- ions in this solution is found to be 2.86 x 10-2 M. At 25oC, the Ksp
Four 7.6 kg shperes are located at the corners of a square of side .76 meters. Calculate the magnitude and direction of the total gravitational force exerted on one sphere by the other three.
What is the mass of 1 mole of O2? What is the density of O2 at STP?3L of a gas, weigh 2g. What is the molecular mass? What volume does 22g of CO2 at STP occupy?
The toothpick mass was 0.1 g, its speed before entering the branch was 216 m/s, and its penetration depth was 18 mm. If its speed was decreased at a uniform rate, what was the magnitude of the force