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A convex mirror has a focal length of -30 cm. Find the magnification produced by the mirror when the object distance is
(a) 8 cm and
(b) 19 cm.
The electric field has a constant value of 3.30 103 V/m and is directed downward. Find the potential at the following points
A wire whose resistance is R = 140 is cut into 9 equally long pieces, which are then connected in parallel. What is the resistance of the parallel combination
q1. sunlight shining in during the daytime is absorbed by the floor interior walls and objects in the room raising
Geosynchronous satellites orbit the Earth at a distance of 4.217 × 107 m from the Earth's center. What is the weight of a 1750-kg satellite at this distance
An electron is in an angular momentum state with l=3, What is the lenght of the electron's angular momentum vector
Take element Z = 21 from the periodic table. Ionize it 20 times so that there is only one electron left orbiting around the nucleus. What is the ground state energy of the electron
A steel cylinder of radius 5.0cm and length 5.0cm is placed in end-to-end thermal contact with a copper cylinder of the same dimensions. If the free ends of the two cylinders are maintained at constant temperatures of 85 C (steel) and 23 C (copper), ..
A series AC circuit contains a resistor, an inductor of 200 mH, a capacitor of 5.60 µF, and a source with ?Vmax = 240 V operating at 50.0 Hz. Calculate the inductive reactance
A hydraulic jack for changing car tires is designed with a primary cylinder (the one you push down on) 1 cm in diameter and a secondary cylinder (the one that pushes up on the car) 5cm in diameter. how much force acts to lift the car
The motion detector used in a physics lab sends and receives 49.55 kHz ultrasonic pulses. find the wavelength of the waves emitted by the motion detector
Three point charges are located in the x-y plane. q1 = +78.2 nC at (0.0, -4.6 cm), q2 = -36.4 nC at (+5.8 cm, 0.0) and q3 = +77.4 nC at (-6.2 cm, +8.4 cm). Determine the magnitude of the net electric field at the origin
Find the linear momentum and kinetic energy of a bullet of mass 4.60 10-2 kg moving at a speed of 320 m/s
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