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Democritus, Dalton, Thomson, Rutherford, and Bohr all had major accomplishments in uncovering the fundamental building blocks of matter. Who do you think is the most important contributor to develop the current technological appliances in your daily life? Justify your reason.
Your journal entry must be at least two hundred words. No references or citations are necessary.
Gravity accelerates the electron in the negative y direction at 9.80 m/s2 while an electric field accelerates it in the positive x direction at 3.80 x 10e6 m/s2. Calculate its velocity 2.45 second after it starts to move
What is the kinetic energy of the pendulum-earth system when the mass goes through the lowest point during the second pass, when is possible to do measurements?
A bar of length .15 m, width .05 m and negligible height is spinning about its center of mass at 2 radians per second. what is their final angular velocity
Draw and label the appropritate free-bodu diagrams. If the acceleration of the mass is 2.5 m/s2, determine the tension in the spring.
A 0.145kg baseball pitched at 39.0 m/s is hit on a horizontal linedrive straight back toward the pitcher at 52.0 m/s. calculate the average force between the ball and the bat during the contact
A planet orbits a star once every 2.99 107 s in a nearly circular orbit of radius 1.42 1011 m. With respect to the star, determine the angular speed of the planet
A piece of wood is 0.700{\rm m} long, 0.210{\rm m} wide, and 8.00×10?2{\rm m} thick. What is the mass of this volume of lead
An Olympic skier moving at 20m/s down a 30o slope encounters a region of wet snow and slides 145 m before coming to a stop. What is the coefficient of friction between skis and snow if the combined mass of the skier and skis is 55 Kgm.
A 2.30mm -diameter glass bead is positively charged. The potential dissimilarity among a point 2.30mm from the bead and a point 4.50mm from the bead is 500V. What is the charge on the bead?
A supply plane needs to drop a package of food to scientists working on a glacier in Greenland. How far short of the target should it drop the package
the magnitude of the net electric field. A lead ball is dropped into a lake from a diving board 6.40 above the water. After entering the water, it sinks to the bottom with a constant velocity equal to the velocity with which it hit the water.
Two narrow slits are illuminated by a laser with a wavelength of 593 nm. Calculate the distance between the two slits
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