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(a) Calculate the rms speed of a carbon dioxide molecule at 25°C.(b) Determine how many times per second it would move back and forth across a 7.0 m long room on the average, assuming it made very few collisions with other molecules.
The scale of a spring balance reading from 0 to 235rm {N} has a length of 15 rm{cm}. A fish hanging from the bottom of the spring oscillates vertically at a frequency of 2.7rm {Hz}. What is the mass of fish? In Kg.
A hand-cranked AC generator is used to cause 0.65 A of current (rms), What is the minimum average rate at which work must be done on the generator
A mechanic pushes a 3.20 X 10^3 kg car from rest to a speed of v, doing 5,100 J work in the process. find the horizontal force exerted on the car
A 500-g mass hangs from a 45.0-cm-long string that is fixed at the top. The mass is pulled slightly aside and allowed to swing back and forth as a pendulum. What is the frequency (in Hz) of the pendulum
The transformer on a utility pole steps the voltage down from 10000 V to 220 V for use in a college science building. At what rate is heat lost in the nonideal transformer
A helium-neon laser, radiating at 632.8 nm, has a power outputof 3.0 mW. The beam diverges (spreads) at angle = 0.17 mrad. What is the power of a point source providing that intensity atthat distance
A wheel with c=4/9, a mass of 43.8kg, and a rim radius of 31.1cm is mounted vertically on a horizontal axis. Find the angular acceleration of the wheel
A cubic block of lead alloy 0.1m on a side is placed in a bucket of mercury. What is the magnitude of the buoyant force
At T = 0ºC and p = 1000mb, 1g of dry air receives during an isochoric process anamount of heat, what is the amount of heat absorbed
Calculate the hydrostatic difference in blood pressure between the brain and the foot in a person of height 1.75 m
There is evidence that elephants communicate via infrasound,generating rumbling vocalizations as low as 14 hz that can travelup to 10 km. The intensity level of these sounds can reach98 dB, measured a distance of 4.5 m from the source.
Steams flows through an adiabatic turbine with a mass flow rate of 4.5 kg/sec, 500 degrees Celsius and 6 MPa. Calculate power output from the adiabatic turbine
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