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Two banked curves have the same radius. Curve A is banked at 12.1o, and curve B is banked at an angle of 15.1 o. A car can travel around curve A without relying on friction at a speed of 13.1 m/s. At what speed can this car travel around curve B without relying on friction?
A child pulls a friend in a little red wagon with constantspeed. How much work does the child do on the wagon
A dielectric-filled parallel-plate capacitor has plate area of 30cm^2 and plate separation of 5mm. The capacitor is connected to a battery that creates a constant voltage of 10V. The dielectric constant is 3. All through the problem, use epsilon_0..
steel rod (ρ = 7860 kg/m3) has a length of2.55 m. It is bolted at both ends between immobile supports. Find the tension that develops when the rodloses 3490 J of heat
Consider a disk of radius R = 41.0 cm and thickness t = 1.1 cm, with a nonuniform volume charge density given by ? = A, If A = 510 ?C/m4, what is the total charge of this disk
For a short time, the path of the plane is described by If the plane is rising with a constant velocity of 10 m/s, determine the magnitudes of the velocity and acceleration
a loundspeaker diaphragm is producing a sound for 2.1 s by moving back and forth in a simple harmonic motion. the
A student could either pull or push, at an angle of 30? from the horizontal, a 55kg crate on a horizontal surface, Calculate the minimum work required for both pulling and pushing
A spelunker is surveying a cave. She follows a passage that takes her a distance 175 m straight west, Use the method of components to determine the magnitude of the fourth displacement
It's possible to estimate the percentage of fat in the body by measuring the resistance of the upper leg rather than the upper arm; the calculation is similar. What are the fractions of muscle and fat in the leg
A 70 kg painter holding a 15 kg paint is climbing up a 30 m-long ladder, which weighs 20 kg, against a frictionless wall at an angle of 60 degree. how far could the painter go up along the ladder
an aerosol can is pressured at 440kpa when its refrigerated at 3 degree celsius. the can warns against temperatures in
A container at 300 K contains H2 gas at a pressure of one atmosphere. At this temperature H2 obeys the Boltzmann distribution. Find to what temperature must the H2 gas be cooled before quantum effects become important
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