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Question1
An inkjet printer, letters are built up by squirting drops of ink at a paper from a rapidly moving nozzle. The pattern on the paper is controlled by an electrostatic valve that determines at each nozzle position whether ink is squirted onto the paper or not. The ink drops have a radius of 19.0 and leave the nozzle and travel toward the paper at a velocity of 25.0. The drops pass throughout the charging unit that gives each drop a positive charge q by causing it to lose some electrons. The drops then pass between parallel deflecting plates of length 1.60 where there is a uniform vertical electric field with a magnitude of 8.05×104.
If a drop is to be deflected a distance of 0.350 by the time it reaches the end of the deflection plate, what magnitude of charge must be given to the drop? (Suppose that the density of the ink drop is).
Question2
A 8.0g bullet is fired into a 12kg wood block that is at rest on a wood table. The block, with bullet embedded, slides 5.0cm across the table. The coefficient of kinetic friction for wood sliding on wood is 0.20. What is the final speed of the bullet?
You have a cylindrical cup of water that springs a leak 5 cm below the surface of the water. What is the velocity of the water coming out of the hole
A carnival merry-go-round rotates about a vertical axis at a constant rate. A man standing on the edge has a constant speed of 3.26 m/s, What is the magnitude of r vector
A wire of length, L, and mass density, ?, is positioned parallel to and directly over another much longer wire. what is the seperation between the two wires
A cubic container is at rest on a rough horizontal warehouse floor. determine the minimum horizontal force that must be applied to the top of the container to cause tipping
How much energy transfer as the reason of a temperature difference was there from the stove into the system consisting of the water plus the pan.
Two point charges, Q = +5.17 microC and q = -2.83 microC, are separated by r = 5.85 m. What is the electric potential energy?
A steel wire of length 1.97m with circular cross section must stretch no more than 0.270cm, What minimum diameter dmin is required for the wire
When you jog, most of the food energy you burn above your basal metabolic rate (BMR) ends up as internal energy, Determine the amount of water you lose to evaporation when running for 31 minutes at a rate that uses 400 kcal/h above your BMR
An ideal gas at 17.8 °C and a pressure of 1.66 x 105 Pa occupies a volume of 3.22 m3. calculate How many moles of gas are present
Coin is placed 14.0 from the axis of the rotating turntable of variable speed. When the speed of the turntable is slowly increased, the coin remains fixed on turntable until a rate of 40.0 (revolutions per minute) is reached, at that point the coin s..
A cable is used to raise a 29kg urn from an underwater archeological site. There is a 21 N drag force from the water as the urn is raised at a constant speed.
Resistivity measurements on the leaves of corn plants are a good way to assess stress and overall health. determine the resistivity of the leaf tissue
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