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A ball of mass 0.075kg is fired horizontally into a ballistic pendulum of mass 0.350kg and sticks. The pendulum was originally at rest. The center of mass rises a vertical height of 0.145m. What is
A 0.940 kg ball is dropped from rest at a point 4.50 m above the floor. The ball rebounds straight upward to a height of 3.50 m. Taking the negative direction to be downward, what is the impulse of
A ball is tossed straight downward from an initial height of 15.00m and strikes the ground at a speed of 11.27m/s. Calculate the speed at which it was thrown.
In an elastic collision, is the total kinetic energy the same before and after the collision? In an inelastic collision, is the total kinetic energy the same before and after the collision? What kin
If a 0.20 mole sample of AgNO3 is dissolved in 0.500 Lof 1.0M NaCN, and 0.20 mole of NaCl is added, what will be the solubility quotient and will precipitation occur?
Consider the strong electrolyte, MX, wich dissociates into M+ and X- ions upon dissolution in water. If the mobility of M+ is 1.866 times that of X-, What percentage of the current is c
An 11-mm wide diffraction grating has rulings of 890 lines per mm. Light is incident normally on the grating. The longest wavelength that forms an intensity maximum in the fifth order is closest to?
A. A certain weak acid HA with Ka = 5.61 x10-6 is titrated with NaOHA solution is made by mixing 9.0 mmol of HA and 1.0 mmol of the strong base. What is the resulting pH? I got pH = 4.35 which
A person (weight W = 578 N, L1 = 0.835 m, L2 = 0.399 m) doing push-ups. Find the normal force exerted by the floor on each hand and each foot, assuming that the person holds this position.
What is the minimum concentration of NH3 required to prevent AgBr(s) from precipitating out of a solution containing 0.01M AgNO3 and 0.001MNaBr?
A ceiling fan is turned on and a net torque of 2.1 N · m is applied to the blades. The blades have a total moment of inertia of 0.24 kg · m2. What is the angular acceleration of the bl
Two cars, A and B, are traveling in the same direction, although car A is 180 m behind car B. The speed of A is 27.3 m/s, and the speed of B is 18.6 m/s. How much time does it take for A to catch B?
4Al+O2----->2Al2O3 If 12 moles of Al2O3 are produced, how many moles of aluminum reacted. Please explain how you reached your answer.
From the top of a cliff overlooking a lake, a person throws two stones. The two stones have identical initial speeds of v0 = 14.0 m/s and are thrown at an angle θ =28.6°, one below the hor
What mass of iron can be produced from the reduction of 1500gof iron(III) oxide according to the following equation?fe2O3+3CO2 -> 2Fe+3CO2
What mass of sodium benzoate should be added to 140.0 mL of a 0.17 M benzoic acid solution in order to obtain a buffer with a pH of 4.25?
To what distance x can a person who weighs 432 N walk on the overhanging part of the plank before it just begins to tip?
A major-league pitcher can throw a baseball in excess of 47.0 m/s. If a ball is thrown horizontally at this speed, how much will it drop by the time it reaches the catcher who is 18.4 m away from th
The end of the ramp is 1.5 m above the ground. Let the x axis be parallel to the ground, the +y direction be vertically upward, and take as the origin the point on the ground directly below the top
What is the percent purity of a sample of iron ore if 1.25g of sample, when reacted with an excess of HCl, produces 220 mL of H2gas collected over water at a total pressure of 1.00atm and 26 degrees
An organic compound can be extracted from a water layer by anorganic solvent more efficiently if the water layer is saturatedwith an inorganic salt such as sodium chloride.
What is the magnitude of the net torque exerted on the branch by the children? Assume that the axis is located where the branch joins the tree trunk and is perpendicular to the plane formed by the b
The punter on a football team tries to kick a football so that it stays in the air for a long "hang time." If the ball is kicked with an initial velocity of 23.6 m/s at an angle of 61.5° above t
The magnitude of the shopper's displacement from the bottom of the escalator to the store is 16.0 m. The vertical distance between the floors is 6.31 m. At what angle is the escalator inclined above
Consider the following reaction, which occurs in a single step and is reversible: CO(g) + Cl2(g) D COCl(g) + Cl(g). Kinetic studies indicate that the rate constant for the forward react