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Suppose a student is given 5.375g of powdered mixture to separate. Because the mixture contains iron shavings, he decides to separate them using a magnet. He obtains 1.824 g of iron. What is the mass percent in the mixture?
A plot against time may show a consistent trend underneath cycles. When did interest rates reach their overall peak during these years? Describe the general trend downward since that year.
A hollow, conducting spherical shell, of radius 3.50 cm, has charge ?9.14×10?5 C. What is the strength of the electric field 2.50 m from the center of the sphere, What is the direction of the field
Which experiment convinced a scientist that, on the other hand, light also consists of particles? Briefly describe the experiment and explain how it confirmed key theoretical predictions that were based on the existence of particles of light. Who ..
Which could potentially cause you the greater injury; being tackled with a light-weight, fast-moving football player, or being tackled by a player with double the mass however moving at half the speed? For each situation, state whether the collision ..
An inductor is connected to a 17kHz oscillator. The peak current is 60mA when the rms voltage is 5.6V. What is the value of the inductance L
Components of some computers communicate with each other through optical fibers having an index of refraction n = 1.25. What time in nanoseconds is required for a signal to travel
A railroad flatcar is loaded with crates having a coefficient of static friction 0.25 with the floor. how short a distance can the train be stopped without letting the crates slide
You are standing 5 m from a tractor when the operator starts it ip the intensity is 3 x10^-5 W/m^2. How much did the sound level change
A resonant circuit using a 240 μF capacitor is to resonate at 15.5 kHz. How many loops will the inductor contain
The truck leaves skid marks on the road surface 62,4 m in length beginning where the brakes first engage and ends at tree. At what speed does truck hit tree and how far does the truck travel during the initial 1.25 second response interval (assume..
q1. to calculate the program suppose she runs up a flight of 85 steps each 0.150 m high in 69.0 s. for ease ignore an
If the arm is 5.50-m long and pivots about one end, at what angular speed (in rpm) should it spin so that the acceleration of the lander is the equal as acceleration because of gravity at the surface of Europa? The mass of Europa is 4.8 times 10^ ..
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