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A proton and an electron are moving due east in a constant electricfield that also points due east. The electric field has amagnitude of 8.0x104 N/C. Determine the magnitude of the acceleration of the proton and the electron.
The sound level measured 5.2 m away from a jet engine is 140 dB. What is the intensity of the sound at 5.2 m? What is the power transmitted by the sound waves? At what distance is the sound level exactly half?
An object moves with constant acceleration 3.30 m/s2 and over a time interval reaches a final velocity of 10.4 m/s. If its initial velocity is 5.2 m/s, what is its displacement during the time interval
The drawing shows a 182-kg crate hanging from the end of a steel bar. The length of the bar is 0.08 m, and its cross-sectional area is 4.00 10-4 m2. Determine the shear stress on the bar
A camera is supplied with two interchangeable lenses, whose focal lengths are 42.0 and 180.0 mm. What is the height (including sign) of her image on the image sensor
A novice skier starting from rest slides down a frictionless 32 degree incline whose vertical height is 125 meters
The helicopter view in the figure below shows two people pulling on a stubborn mule. Find the single force that is equivalent to the two forces shown
How much energy must be added to a bowl of 125 popcorn kernels in order for them to reach a popping temperature of 175celsious? assume that their initial temperature is 21 celsious, that specific heat capacity of popcorn is 1650 j/kgcelsious, and ..
A proton and an electron form two corners of an equilateral triangle of side length 1.9 x 10-6 m. What is the magnitude of the net electric field these particles produce at the third corner?
A car weighing 1.1×104 N and traveling at 12.90 m/s attempts to round an unbanked curve with a radius of 54 m. What force of friction is required to keep the car
During normal operation, a computer's hard disk spins at 7200 rpm. what is the average angular acceleration of the hard disk
Two sound waves have intensities of 0.100Wm^2 and 5.00W/^2. What is the difference in their intensity levels
An ideal gas in a container of volume 0.15m^3 at 0c is kept under the pressure of 10 atm. Determine the number of gas molecules in the container
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