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A farsighted person has a near point that is 48.0 cm from her eyes. She wears eyeglasses that are designed to enable her to read a newspaper held at a distance of 25.0 cm from her eyes. Find the focal length of the eyeglasses, assuming each of the following.
(a) that they are worn 2.0 cm from the eyes
cm
(b) that they are worn 3.0 cm from the eyes
A student sits on a rotating stool holding two 3.9-kg objects. When his arms are extended horizontally, Find the new angular speed of the student
A certain single ion channel is selectively permeable to K and has a resistance of 1.15 GOhms. How many K ions travel through the channel during this time
A car drives west on 8th Street at a speed of 39.3 mph. How long (time) does it take the car come to a complete stop
Suppose a single electron orbits about a nucleus containing two protons (+2e), find the magnitude of the electron's centripetal acceleration
A student makes a simple generator by using a single square loop 24 cm on each side. The loop is then rotated at a frequency of 60 Hz in a magnetic field of 0.044 T.
A 16.5 kg gold bar at 26.0°C is placed in a large, insulated 0.800 kg glass container at 15.0°C with 2.00 kg of water at 25.0°C
the velocity of a boat with respect to the water is 4.0 m/s at an angle of 30.0 degrees North of West. find the velocity of the boat with respect to the ground
Two conductors having net charges of +19.0 µC and -19.0 µC have a potential difference of 19.0 V between them. Determine the capacitance of the system.
Fully stripped (all electrons removed) oxygen (16O) ions are accelerated from rest in a particle accelerator using a total potential difference of 10.0 MV. What is the current of the ion beam, iion, which is the total charge passing per each second
Every year, there is a foot race to the top of the Empire State Building. The vertical distance traveled (using the stairs!) is about 440 m. what was his average power output during the race
A 0.840-kg block oscillates on the end of a spring whose spring constant is k= 42.0 N/m . The mass moves in a fluid which offers a resistive force F=-bv, where b = 0.640 N*s/m. What is the fractional decrease in amplitude per cycle?
A projectile is launched at an angle of 60o with respect to the horizontal from the edge of a cliff which is 100 m high. Its initial speed is 30 m/s. find the displacement vector for the motion of the projectile
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