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Use the average value of the buoyant force to calculate an experimental value of the volume of all three objects in kg/m3. Show your work.
Explain how many atoms strike the umbrella each second? Assume that the wind blows horizontally so that the gravity can be neglected.
A power supply maintains a potential difference of 86.1 V across a 1070-? resistor. What is the current in the resistor
First work out the momentum before and after hitting the table. Don't forget the gravitational force.
Lightning As a crude model for lightning, consider the ground to be one plate of a parallel-plate capacitor and a cloud at an altitude of 680m to be the other plate.
In a head-on collision, the car stops in 0.23 {rm s} from a speed of 17 {rm m}/{rm s}. The driver has a mass of 77 {rm kg}, and is, fortunately, tightly strapped into his seat. What force is applied to the driver by his seat belt during that fract..
A projectile is fired at 60.0 o above the horizontal. Its initial speed is equal to 150.0 m/s. Like most problems in this class (2010), ignore the effects of air unless told otherwise
find the work done to move the particle from x = 0 to x = 10.0 m by graphically determining the area under the F versus x graph. (Do this on paper. Your instructor may ask you to turn in this graph.)
The speed of sound in air is 332 m/s at 0°C. It increased 0.60 m/s for each degree above zero. compute the speed of sound at the temperature of the room.
The acceleration of a particle is given by ax(t)=? 2.10m/s2 +( 3.03m/s3 )t, What will be the velocity at time t = 3.94s
A battery produces 41.4 V when 7.40 A is drawn from it and 46.2 V when 2.20 A is drawn, What is the internal resistance of the battery
A 150-kg (including all the contents) rocket has an engine that produces a constant vertical force (the thrust) of 1680 N, Find the acceleration of the rocket
A 5.0 nC point charge sits at x = 0. At the same time, a 4300 N/C uniform electric field (created by distant source charges) points in the positive x-direction. A. At what point along the x-axis, if any, would a proton experience no net force? B. ..
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