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You drive west at 70km/h for 24 min , then follow a road that goes 38 degrees south of west, driving at 96 km/h for another 36 min . Let the +x-axis point east and the +y-axis north. Find your total displacement. Enter the and components of the displacement separated by a comma. Find your average velocity for the trip. Enter the and components of the velocity separated by a comma.
If the mass of a sliding block is tripled at the equal time the net on it is tripled, how does the resulting acceleration compare with original acceleration?
Evaluate the magnitude of N at the lowest point? If the wheel's speed is doubled, what is the magnitude FN at the highest and lowest point?
Levy flights- consider a random walk of N steps in one-dimension. suppose that the steps are completely uncorrelated, and that the distribution of step size a is given by phi(a)= k*1/(1+abs(a)^alpha).
A helium balloon ride lifts up passengers in a basket. Assume the density of air is 1.28 kg/m3 and the density of helium in the balloon is 0.18 kg/m3. What is the magnitude of the buoyant force on each person
A 60kg pole vaulter running at 13m/s vaults over the bar. Her speed when she is above the bar is 0.7m/s. Neglect air resistance, as well as any energy absorbed by pole, and determine her altitude as she crosses the bar.
At what temperature would the rms speeds be equal to the escape speed from planet earth.
While surveying a cave, a spelunker follows a passage 190{rm m} straight west, then 210{rm m} in a direction 45.0^circ east of south, and then 260{rm m} at 30.0^circ east of north. After a fourth unmeasured displacement, she finds herself back whe..
an arrangement in which four disks are suspended by cords. The longer, top cord loops over a frictionless pulley, What are the masses of each disk
For a damped oscillator with a mass of 170g, the spring constant 92 N/m and a damping coefficient of 55g/s, what is the ratio of amplitude of the damped oscillations to the initial amplitude at the end of 22 cycles.
Consider a balloon containing nitrogen molecules at room temperature (20°C) and atmospheric pressure. what is the number of molecules in the balloon
300 J of work are done to compress the gas as, in the same process, 1200 J of heat energy are transferred from the gas to the environment. Afterward, what is the rms speed of the molecules.
an early cyclotron had a diameter of 30 cm and used a magnet capable of applying a magnetic field of 2.0 T. What was the max kinetic energy of the protons
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