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Postively charged aluminum ion AL3+ has a mass of 4.50^-26? kg. After being accelerated through a potential difference of 650 V, the ion enters a magnetic field of 0.500 T, in a direction perpendicular to the field. Calculate the radius of the path of the ion in the field.
Blood with density 1.06 g/cm^3 and 10-kPa gauge pressure flows through an artery at 27cm/s. What fraction of the artery's area is obstructed
A glass window 0.45cm thick measures 90cm by 35cm . If the inside and outside temperatures differ by 18?, By what factor is the rate of heat transfer reduced
A tuning fork vibrates at concert A, fA = 440. Hz. The A string of a violin is sounded together with this tuning fork, Find the period of the string's vibration
You stand on a frictionless platform that is rotating at anangular speed of 1.2 rev/s. Your arms are outstretched, and you hold a heavyweight in each hand. What is the resulting angular speed of the platform
A 1260 kg car pushes a 2140 kg truck that has a dead battery. When the driver steps on the accelerator, find the magnitude of the force that the car exerts on the truck?
A blacksmith heats a 1.9 kg iron horseshoe to 480 degree C, then plunges it into a bucket containing 10kg of water at 20 degree C. The specific heat of iron is 447 J/kgK. What is the final temperature.
A flat slab of styrofoam, with a density of 32 kg/m3, floats on a lake. What minimum volume must the slab have
A lens that has a focal length of 8.45 cm is used as a magnifying glass. (Take the near point of a normal eye to be 25 cm from the eye.) What is the angular magnification
A 20kg box is on a level surface pressed against a spring compressed 25cm and with k=1000 k/m. How far does the box go up the hill
q1. an underwater diver sees the sun 56 above parallel.how high is the sun above the horizon to a fisherman in a boat
Omega resistor using a voltmeter having an internal resistance of 10.0 Omega. Elucidate what is the potential difference does the voltmeter measure across the 5.00 Omega resistor?
A ball is thrown horizontally from the top of a building 19.0 m hight and lands 64.7 m from of the building, With what initial speed was the ball thrown
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