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an 15.0-kg box is released on a 35.0 incline and accelerates down the incline at 0.290m/s^2
a) Find the friction force impeding its motion?
b) how large is the coefficient of kinetic friction?
Sulphur displays a wide range of oxidation numbers. Determine the oxidation number of sulphur in each of the following species.
At the low point in it swing, a pendulum bob with a mass of 0.46 kg has a velocity of 2.2 m/s. What is its kinetic energy at the low point
What would account for the exothermicity that might occur when ammonium hydroxide is first added to the crude 4-acetamidobenzenesulfonyl chloride
Oxyanions of phosphorus are buffer components in blood. For a KH2PO4/Na2HPO4 solution with pH = 7.40 (pH of normal arterial blood), what is the buffer-component concentration ratio
A projectile is fired with an initial speed of 60.7 m/s at an angle of 35.4 above the horizontal on a long flat firing range. Determine the total horizontal distance covered
Balance the equation and calssify the reactions. if an oxidation reduction occurs write the half reactions and identify the oxidizing and reducing agents.
A uniform, solid, right, circular cylinder rolls down an 4.00 m incline without slipping. How fast will the cylinder be rotating at the bottom
A diver running 2.7 m/s dives out horizontally from the edge of a vertical cliff and 2.0s later reaches the water below? how far from its base did the diver hit the water
What is the molarity of a solution made by dissolving 1.00 grams of HCl in enough water to make 100. mL of solution
What is the pH of a solution created by mixing 200 mL of a 1.59 M NaHSO3 solution with 207 mL of a 1.11 M Na2SO3 solution
A quantity of carbon monoxide gas is slowly compressed adiabatically in an insulated container to one-half of its volume. determine the final pressure of the gas
An electron with a speed of 5.50×10^6 m/s, collides with an atom. What is the speed of the electron after the collision
A heat engine takes in 1000 J of energy at 1000 K and exhausts 615 J at 200 K. What are the actual and maximum theoretical efficiencies of this heat engine
Waves from a radio station have a wavelength of 308 m. They travel by two paths to a home receiver 77.0 km from the transmitter. What is the minimum distance from the mountain to the receiver
An aerosol can of whipped cream is pressurized at 440kPa when it's refrigerated at 3 C. The can warns against temperature in excess of 50 C. What is the safest pressure for the can .
A 0.629-nm photon collides with a stationary electron. After the collision, the electron moves forward and the photon recoils backwards. Find the momentum of the electron
The same object is located at the same distance from two spherical mirrors, A and B. Find the ratio fA/fB of the focal lengths of the mirrors
a ball is tossed directly upward at an initial speed of 5.7m/s and is caught when it falls back down to the throwers hand, how much total time is the ball airborne
A light bulb has a tungsten filament. When the bulb is just turned on and its temperature is 20? C, the current in the bulb is 0.86 A. What is then the temperature of the filament
A 2000-kg horizontal beam is supported at each end. A 160-kg load rests a quarter of the way from one end if the beam and 120 kg cargo is 1/3 from the other end. What is the vertical force on each of the supports.
When you plot 1/Do as a function of 1/Di for a converging lens, the Y-intercept of the best fit line turns out to be 0.055(cm-1). What is the focal length of the converging lens
A cylindrical space station of radius R and length L has a density that varies with distance from its center, Calculate the total mass M of the entire space station
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