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The ball is thrown horizontally at a speed of 24 meters per second from the top of a cliff. When the ball strikes the ground 4.0 seconds later, around how high is the cliff?
In one experiment, 25.0 mL of the unknown KOH solution is placed in a beaker. Added to the KOH solution in the beakder is 25.0 mL of water and a few drops of phenolphthalein. The KHC2O4 solutio
To create the open rectangular box from the 38x44 piece of cardboard by cutting congruent squares from corners and folding up sides.
The image formed by a convex mirror (f = 24.0 cm) consists of a magnification of 0.150. Determine how much (comprising direction) must the object be moved so as to double the image size 1 cm?
The pH of an unknown chloride salt with the generic form (metalion)Cl is measured to be 4.62. Calculate the cation's Ka value.
When you weigh 680 N on the earth, what would be your weight on the surface of the neutron star that consists of the similar mass as our sun and a diameter of 18.0 km?
An aqueous solution contains 285 mg of trichloroacetic acid (Cl3CCOOH) in 10.0 mL. Determine the analytical concentration of the acid.
i) Determine the number of molecules of water which are there in the more massive person? ii) Determine the magnitude of the gravitational force of attraction among the two people?
The o'keefe's have 50 gallons of cucumbers for pickling. The1.5 M KOH solution costs 5$ per liter, ethanol costs 25$ per liter and 9 MH2SO4 solution costs 7.50$ per liter.
The steady horizontal force lasting for 2.10 s provides a 1.25 kg object an acceleration of 3.20 m/s^2 on a frictionless table. Determine what impulse does the force provide to the object?
Protonation of the cyanate anion [NCO]- occurs at the N atom and gives a HNC angle of 128 degrees. Protonation of the isomeric fuolminate anion [CNO]- occurs at the C atom and gives an HCN ang
Demonstrate that maximum possible area for the rectangle inscribed in the circle of radius R is 2R2. Maximize a square of area.
Determine the work input require to pull a mass of 10 Kg up an incline of length 3m and height 2m and with coefficient of friction of 0.25.
2NOBr (g) = 2NO (g) +Br2(g) in the given experiment, 0.10atm of each component is placed in a container. Is the system at equilibrium?
The mass of the rod might be avoided, compared to the mass of an object fixed to the top of the rod. The rod, beginning from rest, tips over and rotates downward. (i) Determine the angular speed of
At 36 Torr create the phase diagram for benzene near its triple point and 5.50 degrees C using the following data: dH fusion= 10.6 kj/mol, dH vap = 30.8 kj/mol, solid state density = 0.891 g/cm^3,
The center of a spherical pocket of oil of 1.50 diameter is 1.30 beneath the surface of Earth. Estimate by what percentage directly above the pocket of oil would be different from the anticipated va
Compounds such as naphthalene and 1,4 dichlorobenzene find the use as mothballs since they sublime at a slow rate at atmospheric pressure. Discuss this behavior in terms of the structure of the mol
Assume that an internal combustion engine runs on octane, for which the enthalpy of combustion is -5512kJ mol^-1 and take the mass of 1 gallon of fuel as 3kg.
Determine what characteristic make convex spherical mirrors applicable for store monitoring and concave mirrors valid as the flashlight reflectors.
The farmer is enclosing the rectangular plot of land which will be bounded on one side by the river and fenced on other three sides. Determine maximum area which can be enclosed if 880 yards of fen
The velocity of the object is given as a function of time by v = 2t - 6t2, where v is in m/s and t is in seconds. Compute average velocity over the interval from t = 0 to t = 4s?
The mass percentage of chloride ion in a 25.00 mL sample of seawater was measured by titrating the sample with silver nitrate precipitating the silver chloride.
When the dots on the painting are separated through 1.5 mm and the painting is observed beneath light of 550 nm wavelength with eyes having a pupil diameter of 2 mm, determine the minimum distance y
Determine the pressure in point 1 and the density of the manometric fluid when a U manometer reads 20 cm using air as operating fluid and a given manometric fluid. A single branch closed tube reads