What is the spring constant of the elastic cord
An elastic cord is 66 cm long when a weight of 57 N hangs from it but is 85 cm long when a weight of 85 N hangs from it. What is the "spring" constant k of this elastic cord?
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This wire forms a one turn loop in the shape of a square and is then connected to a battery that applies a potential difference of 0.200 V. If the loop is placed in a uniform magnetic field of magnitude 0.200 T, what is the maximum torque that can
Neurons in our bodies carry weak currents that produce detectable magnetic fields. A technique called magneto encephalography, or MEG, is used to study electrical activity in the brain using this concept.
The pilot of an airplane traveling 180 km/h wants to drop supplies to flood victims isolated on a patch of land 150 m below. The supplies should be dropped how many seconds before the plane is directly overhead?
Two forces are applied to the ring of a force table, one at angle of 20o , and the other at an angle of 80o . Regardless of magnitudes of forces, the equilibrant will be in the:
An automobile with a mass of 940 kg goes around a curve with a radius of 64m.The coefficient of friction between the tires and the road is 0.700. What is the maximum speed with which the car can go around the curve ?
Use the graphical method to find the magnitude and direction of the third displacement.
An 83 g arrow is fired from a bow whose string exerts an average force of 95 N on the arrow over a distance of 81 cm. What is the speed of the arrow as it leaves the bow?
If it takes a fish 0.20s to perform evasive action, ? Assume the fish is at the surface of the water.at what minimum height must it spot the pelican to escape
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