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How do you test lead levels in water to give a quantitate result, not just whether lead is preasent or not? Where do you get lead testing equipment? Provide an equipment list, a list of chemicals and method. Note we have a colormeter at college.
a circular metal plate of radius 0.2m has 1010 excess electrons uniformly distributed over its surfaces. what is the
10.0g of aluminum at 200?C and 22.0g of copper are dropped into 42.0cm3 of ethyl alcohol at 15?C. What was the initial temperature of the copper
A child throws a ball straight up with an initial speed of 10m/s. Estimate the maximum height above the child hand that the ball reaches
The catapult on an aircraft carrier can take an aircraft weighing 300,000 N from 0 to 87.4 m/s in 10.7 seconds, at which time the aircraft launches. What is the acceleration of the aircraft when it launches?
The electric field points due east and has a magnitude of 4.3 105 N/C. The mass of the electron is 9.11 10-31 kg and that of the proton is 1.67 10-27 kg. Both the proton and electron have charge magnitudes of 1.60 10-19 C.
At what rate does the Sun radiate energy, given that it's essentially a spherical blackbody with radius 6.96x10^8 m and surface temperature 5800 K?
Does the rod(with the attached ball of clay) rotate?
A solid sphere rolling without slipping on a rough horizontal surface with a linear speed 21m/s collides elastically with a fixed, smooth vertical wall. Find the speed of the solid sphere after it has started pure rolling in the backward direction. T..
A 40-cm-long, 0.6-cm-diameter electric resistance wire is used to determine the convection heat transfer coefficient in air at 25°C experimentally. the convection heat transfer coefficient is
A projectile is launched from ground level with an initial speed of 52.2 m/s. Find the launch angle (the angle the initial velocity vector is above the horizontal) such that the maximum height of the projectile is equal to its horizontal range. (I..
The figure shows the blade of a chain saw. The rotating sprocket tip at the end of the guide bar has a radius of 0.0343 m. Find the angular speed of the sprocket tip in rev/s
A particle moves along the x axis. It is initially at the position 0.350 m, moving with velocity 0.070 m/s and acceleration -0.300 m/s2. Find the position of the particle after this time
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