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A 240kg block with mass density of 1200kg/m^3 was accidentally dropped into water and sink. What is the volume of the block? If the mass density of water is 1030kg/m^3, what is the buoyant force acting on the block? What force should be applied to the block to pull it out of water?
An electron enters a region of constant electric field that is produced by a parallel-plate capaci- tor, find the velocity of the electron when it exits the capacitor
An electron of mass 9.1 * 10^-31 kg is moving in the xy-plane; its speed is 2.0 * 10^5 m/s, What are the components of the momentum of the electron
A car owner forgets to turn off the headlights of his car while it is parked in his garage. how long will it take the battery to completely discharge
The maximum wavelength an electromagnetic wave can have and still eject an electron from a copper surface is 264 nm
What is the bulk modulus of a fluid in which 2 kg occupies 10-3 m3 of volume and the speed of sound in the fluid is 1900 m/s
The position function x(t) of a particle moving along an x axis is x = 4.0 - 4.5t2, At what positive time does the particle pass through the origin
IF Earth's orbit were suddenly to become much more eccentric. keeping orbital semimajor axis as is, fixed at 1 AU, but let's imagine shifting both the Earth's perihelion and aphelion points by 0.9 AU, so that at perihelion we were only 0.1 AU from th..
A microwave radio transmitter emits electromagnetic waves of a single wavelength. calculate the maximum magnetic field at this distance
The waves from a radio station can reach a home receiver by two paths. One is a straight-line path from transmitter to home, a distance of 22.0 km. Find the minimum height of the ionospheric layer
Colonel John P. Stapp, USAF, participated in studying whether a jet pilot could survive emergency ejection. Determine the negative acceleration he experienced
a 6.5 feet tall, woman wants to buy a mirror from the bookstore that is tall enought so that she can see her full figure in the mirror. what is the minimum height of such a mirror
you drive due east at 85km/h for 50min. then you follow a road going 60 degrees south of east, going 90km/h for another 30min. Find your total displacement
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