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A nearsighted person cannot see objects clearly beyond 25 cm (her far point). If she has no astigmatism and contact lenses are prescribed for her, what a) power and b) type of lens are required to correct her vision?
A 0.280 kg croquet ball makes an elastic head-on collision with asecond ball initially at rest. The second ball moves off with halfthe original speed of the first ball. What is the mass of thesecond ball
When you touch a friend after walking across a rug on a dry day, you typically draw a spark of about 2.01mm. Calculate the potential difference between you and your friendjust before the spark.
Neutron-induced fissionof U-235 results in the fission products iodine-139 and yttrium-95. How many neutons are released
four vectors all have the same magnitude. vector 1 is at 30 degrees vector 2 is at 135 degrees vector 3 is at 240
Battery-powered electricity is very expensive compared with that available from a wall receptacle. Estimate the cost per kWh of an alkaline D-cell
A spring oscillator is designed with a mass of 0.153 kg. It operates while immersed in a damping fluid, Find the required damping constant for the system
A shear force of 4 x105 N is applied to an aluminum bar of length L = 28 cm, width w = 5 cm, and height h = 1.2 cm, What is the shear deformation
A warehouse workerpushes a crate along the floor by a force of 29.0 N that points downward at an angle of 50.0^\circ below the horizontal. Find the vertical component of theforce
A bungee jumper undergoes simple harmonic motion with amplitude 7.9m and frequency 0.110Hz. Determine the bungee jumper's velocity
The school bus picks up Brian in front of his house and takes him on a straight-line 3.6 km bus ride to school in the positive direction. He walks home after school. If the front of Brian's house is the origin.
A solid, horizontal cylinder of mass 10.0 kg and radius 1.30 m rotates with an angular speed of 5.50 rad/s about a fixed vertical axis through its center. Determine the final angular speed of the system
the gases in two identical containers are at 1 atmosphere of pressure and at room temperature. one contains helium gas
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