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An object is placed 100 cm in front of a diverging lens of focal length -25 cm. A converging lens of focal length 33.333cm is placed 30 cm past the first lens. What is the lateral magnification of this system of lenses?
A steel cable with total length 30 m and mass 100 kg is connected to two poles. find the wavelength of the resulting wave on the cable
A highway is to be built between tow towns, one of which lies 30.7 km south and 72.2 km west of the othe, What is the shortest lenght of highway that can be bult between the tow towns
A monatomic ideal gas is held in a thermally insulated container with a volume of 0.06m^3. What volume must the gas be compressed to increase the pressure to 140 kPa
The mass of Pluto was not known until 1978 when a moon of Pluto was finally discovered. How did the discovery of this moon help
If a dielectric material with ? = 3.80 is inserted so that it fills the volume between the plates (with the capacitor still connected to the battery), how much additional charge will flow from the battery onto the positive plate
The magnetic flux through a circuit is reduced from 35 Tm^2 to 5 Tm^2 in 0.1s. The current induced in the circuit is 3.6 mA. What is the resistance to the circuit
A 1.0 kohm resistor is connected in series with a 10 mH inductor, a 30 V battery, and an open switch. at time t=0, the switch is suddenly closed. What are the voltage drops Vr and Vl 20.00 us after the switch is closed.
Electrons are ejected from a metallic surface with speeds ranging up to 4.60 × 105 m/s when light with a wavelength of 625 nm is used. a)What is the work function of the surface? b) What is the cutoff frequency for this surface?
A horizontal wire of length 0.57 m, carrying a current of 8.0 A, is placed in a uniform external magnetic field. When the wire is horizontal, estimate the magnitude of the external magnetic field
A Carnot cycle takes 92 cycles to lift a 10 kg mass a height of 13m. What is the temperature of the hot reservoir
A mechanic tests the tension in a fan belt by pushing against it with his thumb, What is the tension in the belt (while the mechanic is pushing)
The rms speed of the molecules in 1.5g of hydrogen gas is 1800m/s . A:What is the total translational kinetic energy of the gas molecules, what is the rms speed of the molecules
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