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A telephoto camera lens system needs to be able to form reasonably sized images of distant objects, Find the height of the final image formed by the two lenses. Is it upright or inverted
A gas pressure of 2.0 atm is in a closed container. Indicate the changes in its volume when the pressure undergoes the following changes at constant temperature: a) the pressure increases to 6.0 atm
A mass m = 14 kg rests on a frictionless table and accelerated by a spring with spring constant k = 5209 N/m. The floor is frictionless except for a rough patch, What is the length of the rough spot
explain the trends in melting points in going from the chloride to the flouride, making direct reference to the attractive forces that must be overcome to melt the solid and why their strength varie
Why are the melting points of sodium halides very high and the melting points of silicon halides very low. Response should include descriptions of the bonding and refernce to the attractive forces t
If 18.5 mL of 0.800 M HCl solution are needed to neutralize 5.00 mL of a household ammonia solution, what is the molar concentration of the ammonia
The current in a 100 watt lightbulb is 0.770 A. The filament inside the bulb is0.190 mm in diameter, What is the current density in the filament
Is the best description of the t2g orbitals in [CoCN6]3- bonding, non-bonding, or antibonding? Explain your choice.
A loudspeaker in a parked car is producing sound whose frequency is 20680 Hz, what is the minimum speed of the moving car
Balance each of the half reactions in acidic solution a)Cu(s)>Cu^2+(aq) b)SO4^2-(aq)>SO3^2-(aq) c)BrO3^-(aq)>Br^-(aq) d)IO3^-(aq)>I2(s)
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1040 Hz, What is the speed of the bird, expressed as a percentage of the speed of sound
A listener increases his distance from a sound source by a factor of 3.05, what is the change in the sound intensity level in dB
On a climb up mt. Whitney, the atmospheric pressure drops to 467 mmHg. What is the pressure in terms of the following units? a) atm; b) torr; c) in. Hg; d) Pa.
A beam of electrons is accelerated from rest through a potential difference of 0.110kV and then passes through a thin slit, How wide is the slit
A radar for tracking aircraft broadcasts a 12.0GHzmicrowave beam from a 2.00m -diameter circular radar antenna, What is the diameter of the radar beam at a distance of 30.0km
Which of the following statement(s) describes the pressure of gas? a) the force of gas partials on the walls of the container; b) the number of gas particals in a container; c) the volume of the con
One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. estimate the diameter of the pinh
Identify the property of gas that is measured in each of the following: a) 425 K; b) 1.0 atm; c) 10.0 L; d) 0.50 mol of He.
A galvanometer with a full-scale sensitivity of 700?A and a coil resistance of 58? is to be used to build an ammeter designed to read 10A at full scale
typical industrial electrolysis cells can produce approximately 6kg of F2 in a 24 hours day. At what current (A) are these cells operating for this to be true
A capacitor in a single-loop RC circuit is charged to 57% of its final voltage in 1.3s, Find the percentage of the circuit's final voltage after 4.3s
Using kinetic molecular theiry of gases to explain each of the following: a) A container of nonstick cooking spray explodes when thrown into a fire; b) The air in a hot air balloon rise. c) You can
A series RC circuit with C = 56?F and R = 6.4? has a 25V source in it. With the capacitor initially uncharged, an open switch in the circuit is closed, What is the voltage across the resistor immedi
Three resistors with values 0.90? , 2.9? , and 4.2? are connected in parallel in a circuit with a 6.4V battery. What is the total equivalent resistance
Suppose you need to image the structure of a virus with a diameter of 50 nm, For light of wavelength 2.5nm, what is the energy (in eV) of a single photon? In what part of the electromagnetic spectru