What are the forces on two charge
What are the forces on two charges of +0.43 C and +2.0 C, respectively, if they are separated by a distance of 1.6 m
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A uniform plank of length 5.5 m and weight 205 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 447 N walk on the overhanging part of the pla
Gas is confined in a tank at a pressure of 1.04×108 Pa and a temperature of 23.3?C. Half of the gas is withdrawn and the temperature is raised to 67.6?C. Find the new pressure in the tank.
In the lungs there are tiny sacs of air, which are called alveoli. An oxygen molecule (mass = 5.30 x 10-26 kg) is trapped within a sac, and the uncertainty in its position is 0.140 mm. What is the minimum uncertainty in the velocity of this oxygen
When at rest, a proton experiences a net electromagnetic force of magnitude 8.5×10-13 pointing in the positive direction. Find the magnitude of the magnetic field.
A 40 cm diameter wheel accelerates uniformly from 240 rpm to 360 rpm in 6.5 s. how far will a point on the edge of the wheel have traveled in this time?
A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100. What is the minimum force the nurse needs to apply to the syringe? The nurse empties the syringe in 2.70 s. What is the flow speed of the medicine through
We observe two charges separated by a distance of 1.00 meters. If the distance between the two charges is changed to be half what it was, by what factor would the electric force of between them be changed. That is, what is the ratio of the new for
What is the variation of pressure in the sound wave if the speed of sound is 343 m/s and the density of air is 1.2 kg/m3?
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