Find spring constant if negligible mass supported by spring
A 60-kg person drops from rest a distance of 1.20 m to a platform of negligible mass supported by a stiff spring. The platform drops 6 cm before the person comes to rest. What is the spring constant of the spring?
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What are the x and y components of the resultant force on the sled assuming the snow is frictionless? What is the magnitude of the acceleration of the sled?
Calculate the time required to bring all this water from 20°C to 100°C, ignoring any heat losses. (The specific heat of water is 4186 J/kg·K.)
How would you design the procedures to prevent the keying error you discussed? Would the processes you mention be automated? How?
A uniform electric field of magnitude 375 N/C pointing in the positive x-direction acts on an electron, whichis initially at rest. After the electron has moved 3.20 cm, what is (a) the work done by the field on hte electron, (b) the change in pote
Consider 1500-Hz sound waves diffracted by a door that is 71 cm wide. What is the angle between the two first-order diffraction minima?
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The atmosphere and cause them to glow. What is the radius of the circular orbit for (a) an electron with speed 3.0×106 and (b) a proton with speed 7.0×104 .
The backward direction relative to the centre of mass and the other has the velocity of 0.500c in the forward direction. what velocities will the observer find?
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