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Two point charges each with 6.0 x 10-2 C of charge are 0.14 meter apart. Knowing that k is 9 x 109 N•m2/C2 (the proportionality constant for Coulomb's law), compute the force between the charges.
A home (volume = 1000 m3) built in 1946 has urea formaldehyde insulation, which outgases into the home at a rate of 5 ng/hr, What is the steady state concentration (C) of formaldehyde in the home
A 2.00×10^4 kg railroad car is rolling at 4.00m/s when a 5000kg load of gravel is suddenly dropped in. What is the car's speed just after the gravel is loaded
A wooden pole is 4.00m long , weighs 315 N , and has its centerof gravity 1.50m from one end. What force is needed to lift each end
A 35.0-g bullet strikes a 5.0-kg stationary wooden block and embeds itself in the block. The block and bullet fly off together at 8.6 m/s. What was the original speed of the bullet?
An electron and a positron have masses of 9.11 10-31 kg. They collide and both vanish, What is the energy of the electromagnetic radiation
A bat emits an ultrasonic pulse by a frequency of 44.0 kHz. It senses a moth flying by and `measures' a time delay of 7.30 ms. How far away the moth is?
Standing on the surface of a small spherical moon whose radius is 6.85·104 m, What maximum height above the surface of the moon will the rock reach
A 50.0-g sample of a conducting material is all that is available. The resistivity of the material is measured to be 11× 10 -8 ?m, What must be the diameter of the wire
After landing on an unfamiliar planet, a space explorer constructsa simple pendulum of length 50.0 cm. What is the value of the acceleration of gravity on this planet
A piano string is so badly out of tune that the tension must be increased by 10%. Find the percentage increase of the frequency
you are the navigator of a ship at sea. you receive radio signals from two transmitters a and b which are 109.0 km
This question will ask you to determine the area of a flat piece of metal according to the data in the table below. etermine the mean, standard deviation, and the standard deviation of the mean for the width measurements
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