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A 2.1*10^3-kg car starts from rest atthe top of a5.0-m-long driveway that is sloped at 20 degrees with thehorizontal. If an average friction force of 4.0*10^3 N impedes themotion, find the speed of the car at the bottom of the drive way.
Three polarizing filters are stacked with the polarizing axes of the second and third at 30 and 75.0, find the intensity of light emerging from each filter
A hydrogen atom in the n = 2 state absorbs a photon with wavelength 410nm, Find the change in the atom's potential energy
A box-shaped piece of concrete measures 3ft by 2ft by 0.5ft. Find the buoyancy force that acts on it when it is submerged in water
A microwave oven operates at 2.4 GHz with an intensity inside the oven of 2350W/m^2. What is the amplitude of the oscillating electric field
A block is launched with speed up v0 a slope making an angle ? with the horizontal, Find an expression for the distance d the block travels along the slope
An outside loudspeaker (considered a small source) emits sound waves with a power output of 100 W. (a) Find the intensity 10.5 m from the source. W/m2 (b) Find the intensity level in decibels at that distance. dB (c) At what distance would you experi..
X rays with intial wavelegnth 6.75*10^-2nm undergo compton scattering, At which scattering angle is this wavelength observed
A 0.34 kg meterstick balances at its center. If a necklace is suspended from one end of the stick, the balance point moves 9.5 cm toward that end. find the mass of the necklace
An 800 kg car moving at 6 m/s begins to coast down a hill 40m high with its engine off. How much energy was lost to friction
A magnetic field near the ceiling points up and is decreasing. Looking up at the ceiling, does non-Coulomb electric field curl clockwise or counter-clockwise.
An air bubble has a volume of 1.50 cm3 when it is released by a submarine 100 m below the surface of a lake. What is the volume of the bubble when it reaches the surface
A cook puts 5.40 g of water in a 2.00-L pressure cooker that is then warmed to 460°C. What is the pressure inside the container? (Assume room temperature is 20°C.)
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