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Molecular Physics | Thermodynamics
The charger cord used to recharge a cell phone contains a transformer that reduces 240 V AC to 4 V AC. For each 1,025 turns in the input coil, how many turns are there in the output coil? (Round your answer to at least one decimal place.)
Molecular Physics | Thermodynamics
A small object is placed to the left of a convex lens and on its optical axis. The object is 33 cm from the lens, which has a focal length of 15 cm. Determine the location of the image formed by the lens. (Enter your answer in cm from the lens.)
cm from the lens
b. Describe the image. (Select all that apply.)
real
virtual
upright
inverted
enlarged
reduced
on the left side of the lens
on the right side of the lens
cm from the lens
b. Describe the image. (Select all that apply.)
real
virtual
upright
inverted
enlarged
reduced
on the left side of the lens
on the right side of the lens
Molecular Physics | Thermodynamics
A 3.0 cm-tall object stands in front of a converging lens. It is desired that a virtual image 2.4 times larger than the object be formed by the lens. How far from the lens (in cm) must the object be placed to accomplish this task, if the final image is located 10 cm from the lens?
Molecular Physics | Thermodynamics
. A concrete highway is built of slabs 12 m long (20°C). How wide should the
expansion cracks between the slabs be (at 20°C) to prevent buckling if the range of
temperature is -30°C to +50°C?
expansion cracks between the slabs be (at 20°C) to prevent buckling if the range of
temperature is -30°C to +50°C?
Molecular Physics | Thermodynamics
Fluid of density 2700 kg m−3 flows through a horizontal pipe that curves up into a vertical pipe as shown as shown in the figure above. If the absolute pressure in the pipe at point 1 is P1 = 160 kPa then what is the absolute pressure in the pipe at point 2, P2 (A= 0.067cm^2 H= 52cm
Molecular Physics | Thermodynamics
(a) What is the average translational kinetic energy of an ideal-gas molecule at 27°C?
(b) What is the total random translational kinetic energy of the molecules in 1 mole of this gas?
(c) What is the root-mean-square speed of oxygen molecules at this temperature?
(b) What is the total random translational kinetic energy of the molecules in 1 mole of this gas?
(c) What is the root-mean-square speed of oxygen molecules at this temperature?
Molecular Physics | Thermodynamics
Compute the frequency (in MHz) of an EM wave with a wavelength of 9.0 in. (0.2286 m).
Molecular Physics | Thermodynamics
The blackbody radiation emitted from a furnace peaks at a wavelength of 7.0 10-6 m (0.0000070 m). What is the temperature inside the furnace?
Molecular Physics | Thermodynamics
The generator at a power plant produces AC at 25,000 V. A transformer steps this up to 355,000 V for transmission over power lines. If there are 2,150 turns of wire in the input coil of the transformer, how many turns must there be in the output coil?
Molecular Physics | Thermodynamics
An electric clothes dryer is rated at 4,800 W. How much energy does it use in 50 min?
