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The distance between two successive maxima of a transverse wave is 1.20m. Eight crests, or maxima, pass a given point along the direction of travel every 12.0s. Calculate the wave speed.
A "swing" ride at a carnival consists of chairs that are swung in acircle by 12.0 m cables attached to a vertical rotating pole, asthe drawing shows. (θ = 66.0°) Suppose the total mass of a chair and its occupant is 234 kg.
A cylindrical copper rod and an iron rod with exactly the same dimensions are welded together end to end. What is the temperature at the midpoint where the rods are joined together
A train 350 m long is moving on a straight track with a speed of 84.8 km/h. determine how long the train blocked the crossing
A wooden raft has a mass of 45 kg. When empty it floats in water (density 1000 kg/m3) with 68% of its volume submerged. What mass of sand could be put on the raft without it sinking.
suppose that after walking across a carpeted floor you reach for a doorknob and just before you touch it a spark jumps
at 22m from a sound source, the intensity level is 52dB. A: what is the level at distance of 60 B: what is the level at distance of 216m
An explosion breaks an object into two pieces, one of which has 1.5 times the mass of the other. how much kinetic energy did each piece acquire
The human body converts internal chemical energy into work and heat at rates of 60 to 125 W (called the basal metabolic rate). This energy comes from food and is usually measured in kilocalories [1 kcal = 4.186 kJ].
one can not align the apparatus to eliminate entirely the effects of the earths magnetic field. consider the case where
Write down the equation for this process, and using values for the binding energy of the hydrogen and carbon-12 nuclei of 0 MeV and -92.2 MeV respectively, calculate the binding energy of the nitrogen nucleus.
Suppose the device is used at a service station to measure the flow rate of gasoline (? = 7.00 102 kg/m3) through a hose having an outlet radius of 2.56 cm. Find the speed of the gasoline as it leaves the hose
A radio antenna broadcasts a 1.0 MHz radio wave with 30.0 kW of power. What is the electric field amplitude at this distance
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