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A 2.05 cm tall object is placed 30.0 cm to the left of a converginglens with a focal length f1 = 21.0 cm. A diverging lens, with a focal lengthf2 = -50 cm, isplaced 30.0 cm to the right of the first lens. How tall is thefinal image of the object?
How far apart would the two sphere. Uranium-238 (U238) has three more neutrons than uranium-235 (U235). Compared to the speed of sound in a bar of U235, is the speed of sound in a bar of U238 higher, lower, or the same? There are several factors ..
A proton is fired directly at a lithium nucleus. If the protonâ€TMs velocity is 4.0x105 m/s when it is far from the nucleus, how close will the particles get to each other
A certain ideal gas has a molar specific heat at constant volume CV = 7R/5. What is its molar specific heat at constant pressure
You have a string with a mass of 0.0131 kg. You stretch the string with a force of 9.31 N, giving it a length of 1.89 m, What is the wavelength of the standing wave you create in the string
A uniform electric field of magnitude 395 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. What is the work done by the field on the electron
The electric motor of a model train accelerates the train from rest to 0.720 m/s in 27.0 ms. Find the average power delivered to the train during its acceleration
An RLC series circuit has a 202 ? resistor and a 25.0 mH inductor. At 8220 Hz, the phase angle is 45.0°. Find the minimum possible capacitance of the circuit
Two consecutive frequencies are 500 Hz and 540 Hz. ( Stringed instrument; closed-closed) Calculate the fundamental frequency
A rock climber throws a small first aid kit to another climber who is higher up the mountain. FIND the vertical height difference between the two climbers
While a woman stands with two feet on a scale, the scale reads 490 N. When she lifts one foot, scale reads more or less.
A girl rides an escalator that moves her upward at a constant speed. As the girl rises, how do her gravitational energy and kinetic energy change.
Throughout three hours one winter afternoon, when outside temperature was 9° C, a house heated by electricity was kept at 21° C with the expenditure of 46kwh (kilowatt•hours) of electric energy.
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