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A 15.00 mL solution of potassium nitrate (KNO^3) was dilutied to 125.0 mL, and 25.00 mL of this solution were then diluted to 1.000*10^3 mL. the concentration of the final solution is 0.00383 M. Calculate the concentration of the origanal solution Is it .00798M? When dealing with sig figs, is M counted as an exact number?
The circuit is built, and the resistance is measured at 1500 kΩ and the voltage at 4.7 V. What is the current through the resistor?
find out the magnitude of the gravitational force exerted by one on the other.
Particle track detectors are used to measure the speed of particles if the lifetime of the particle is known. Particle X has a lifetime of 256.2 ps. These particles are created in an experiment inside the detector by a given reaction.
suppose a block with a mass of 3.00 x 105 kg is being lifted by a crane. the boom of the crane makes an angle of 45
a coal-fired electric power plant has a 2000-megawatt electric power output and operates with an overall plant
a balloon rubbed against denim gains a charge of -8.0 microc. whats the electric force between the balloon and the
A simple pendulum is 0.21 m long. Att = 0 it is released from rest starting at an angle of13°.Ignore friction. (Use g = 9.8 m/s2.) What will be the angular position of the pendulum at t = 0.65 s? What will be the angular position of the pendulum at t..
Two identical small insulating balls are suspended byseparate 0.25-m threads that are attached to a common point on theceiling. Each ball has a mass of 8.0 × 10-4 kg.Initially the balls are uncharged and hang straight down.
A certain freely falling object requires 1.55 s to travel the last 36m before it hits the ground. From what height above the ground did it fall.
The wave function for a wave on a taut string is y(x, t) = 0.335 sin(9?t ? 3?x + ?/4) where x and y are in meters and t is in seconds. What is the energy contained in each cycle of the wave
Even though there is no gaseous oxygen near these cells, it is customary to express the abundance of oxygen in terms of the partial pressure of gaseous oxygen that would be in equilibrium with the blood.
A 2.2×10^4kg rocket has a rocket motor that generates 3.1×10^5N of thrust. What is the rocket's initial upward acceleration
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