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In a television set, electrons are accelerated from rest through a potential difference of 22 kV. Find the magnitude of the maximum magnetic force
A slide projector needs to create a 96.0 cm high image of a 2.20 cm tall slide. The screen is 301 cm from the slide. find focal length does the lens need
A 59.3-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.714, What horizontal pushing force is required to just start the crate moving
A 2.0 cm tall candle flame is 1.8 cm from a wall. You happen to have a lens with a focal length of 36 cm . 1. How many places can you put the lens
Suppose that excess Cu(s) is added to 1.0 L of 0.015 mol L^-1 Fe(NO3)3(aq), with no change in volume. What is the equilibrium concentration of Fe3+. Justify any approximations you make.
The horsepower rating commonly used for engines indicates the rate at which they can do work. What amount of work does the engine do on each cycle
The x, y, and z components of a magnetic field are Bx = 0.14 T, By = 0.17 T, and Bz = 0.17 T. What is the magnitude of the magnetic force that acts on this wire
In an experiment, 0.500 L of 0.020 mol L ^-1 NaOH(aq) is rapidly mixed with an equal volume of 0.020 mol L^-1 HCN(aq). Calculate the time, in seconds, required for this [OH] to decrease to 1.0×
A parallel plate capacitor has square plates with sides of length 14 cm. The distance between the plates is 2 mm. How much energy is stored in the capacitor now
A car is moving at 9 m/s along a curve on a horizontal plane with radius of curvature 46 m. The acceleration of gravity is 9.8. Find the rotational frequency of the wheel
A 75 g Frisbee is thrown from a point 1.2 m above the ground with a speed of 14 m/s. find the reduction in Emec of the Frisbee-Earth system
Please explain in detail and step by step a 1.0kg block is held at rest against a spring with a force constant k = 740N/m. Find d such that the block's speed after crossing the rough patch is 2.4m/s
What is the equation and color of product for chemical reaction Cd2+ (aq) + S2-(aq), SnS2(s) + OH-(aq), Cu2=(aq) + NH3(aq)
An ethernet cable is 3.95 m long and has a mass of 0.190 kg. A transverse pulse is produced by plucking one end of the taut cable. evaluate the tension in the cable
Compute the velocity of the electron assuming that hydrogen is described by the Rutherford-Bohr model
Find the Net Iconic Equations for these Chemical Reactions- a. Cu+4HNO3(aq)= Cu (NO3)2 (aq)+2NO2(g)+2H2O(l) b. Cu(NO3)2(aq)+2NaOH(aq)=Cu(OH)2(s)+2NaNO3(aq)
You drive your 1,465-kg car at a constant speed of 25 mph down a ramp that has a grade of 12 %. Define positive direction in the forward direction
A stone thrown horizontally from a height of 5.72 m hits the ground at a distance of 13.50 m. Calculate the speed of the stone as it hits the ground
Calculate the concentration (in molarity) of a Ba(OH)2 solution if 25.0 mL of the solution are needed to neutralize 20.0 mL of a 0.500 M HCl solution
You are pushing a 150-kg wooden crate in a straight line a distance of 4.5 m across a wooden floor at constant speed. What is the work done by friction on the crate
An old-style TV set places 50 kV across two plates of a parallel plate capacitor. What is the speed of the electron when it exits the hole in the plate
When 5.30* 10^5 J of heat is added to a gas enclosed cylinder fitted with a light frictionless piston maintained at atmospheric pressure, estimate the work done by the gas
Your television picture is created by 480 horizontal lines of pixels, arranged on a screen of total height h. Calculate this ratio D/h of minimum viewing distance to screen height
Calculate the lime dosage required for soften- ing by selective calcium removal for the following water analysis. The dissolved solids in the water are CO2 = 17.6 mg/L, Ca2 + = 63 mg/L, Mg2 + = 15mg
The current in a series circuit is 6.0 A. When an additional 17.0 resistor is inserted in series, What is the resistance in the original circuit