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A runner is practicing on a circular track that is 675 m in circumference. From the point farthest to the west on the track, he starts off running due north and follows the track as it curves around toward the east.
(a) If he runs halfway around the track and stops at the farthest eastern point of the track, what is the distance he traveled?
You have four 'point' masses, each having a mass of 3.0 kg. They are at the coordinates (2,3)m, (-2,5)m, (7,0)m, (0.4, -5)m. Where is the center of mass
A 0.250-kilogram cup at 15 °C is filled with 0.100 kg of boiling coffee. The cup and the coffee come to thermal equilibrium at 75 °C. what is the specific heat of the cup material
Two infinitely large plates are arranged so that they are parrallel, and seperated by a distance d. What is the approximate electric field outside the plates
The cyclist speeds up to a cadence of 120 (120 rotations per minute) in a surge lasting 30 seconds. What is the magnitude of angular acceleration of the wheel
The force required to stretch a Hooke's-law spring varies from 0 N to 76.4 N as we stretch the spring by moving one end 14.6 cm from its unstressed position. Find the work done in stretching the spring
A ceiling fan with 80-cm-diameter blades is turning at 60rpm. Suppose the fan coasts to a stop 30s after being turned off.
toad make use of resonance in a closed tube to produce very loud sound the tube is its swin bladder used as an amplifier the sound level of the creature has been measured as 71dB calculate the intensity of the sound
There is a clever kitchen gadget for drying lettuce leaves after you wash them. find the magnitude of the centripetal acceleration at the outer wall
A steel wire in a piano has a length of 0.60- m and a mass of 4.5 x10-3 kg. To what tension must this wire be stretched in order that the fundamental vibration correspond to middle C (fC = 261.6 Hz on the chromatic musical scale).
q1. the escape speed from a very small asteroid is only 26 ms. if you throw a rock away from the asteroid at a speed of
A cubical block of wood 10cm on a side, floats at the interface between oil and water with its lower surface 1.50 cm below the surface
In CHEM122 we do an experiment where the charge of an electron may be determined. How many hours does it take for this plating
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