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A plate capacitor has a spacing between its plates of 5mm and a potential difference of 3.00e3 Volts across its plate. How fast is the electrom traveling when it reaches the positive plate. Ignore
What happens to the solutions of the time-independent Schrodinger equation if the potential energy V (x) is changed by an additive constant C everywhere? What happens to the energies?
Find the dimensions of the building to minimize the cost of construction of the walls and the roof assuming that the glass wall costs twice as much as that of the brick wall.
An electron moves on a path parallel to the direction of a uniform electric field of strength 5 N/C. How much work is expended on moving the electron 15 c.m. in the same direction as the electric f
After a reaction time 0.800 s the policeman begins to pursue the speeder with an acceleration of 4.00 m/s^2. Including the reaction time, how long does it take for the police car to catch up with th
A point charge has a charge of -7.00 micro C. Estimate the strength and direction of the electric field at a distance of 8.00 c.m. away from the point charge? Please show how you derived it.
Three point charges lie along a straight line as shown in the figure below, where q1 = 5.76 µC, q2 = 1.44 µC, and q3 = -2.2 µC. The separation distances are d1 = 3.00 cm and d2 =
What is the magnitude of the acceleration while the boulder is moving?
What is the person's body weight if the magnitude of the force exerted by the handle on each of the person's hands is 264 N ? Hint: the upper body represents 74% of the weight of the person.
One end is insulated and the other exchanges heat by convection. Write the heat equation and boundary conditions for steady state two-dimensional conduction.
If a 2kg. block is dropped from an at-rest position .6m above the top of the springs, determine their deformation when the block momentarily stops.
Find the frequency ration r=w/wn at which the amplitude of a single degree of freedom damped system attains the maximum value. Also find the value of the maximum amplitude.
Calculate the min required initial velocity (in miles per hour) for a ball hit three feet above home plate to just clear the centerfield fence when it is hit at angles of 15, 25, 35, 45, and 55 degr
The mass of a copper atom is 3.12 10-25 kg, and the density of copper is 8 920 kg/m3 . (a) Determine the number of atoms in 1 cm3 of copper.
Plot the magnitude of the transmitted force as a function of operating speed in rpm, assuming a unit force amplitude. On the same plot, re-plot the transmitted force if instead the damping ratio cha
A table has a mass of 500 kg. What is the maximum natural frequency for the table system and the resulting individual spring stiffness?
Assuming To =300 k and a = 2 x 10^(-5) /m estimate the pressure ans temperature atop mount Everest. What is lapse rate dt/dy based on the above parameters(in kelvin/km)?
A fancy lecture demo is shown in the figure above: an electrically charged ball of mass 0.960 grams, is suspendon a string of negligible mass in a uniform electric field of magnitude 7.64×101
What is the acceleration at t=3 s? When is the acceleration zero? What is the velocity of the object along the x direction after 10 s? What is the velocity of the object along the y direction after
Two point-like particles are placed 33.4 cm apart and are given equal and opposite charge. The first particle, of mass 11.9 g, has an initial acceleration of 2.05 m/s2 towards the second particle. W
Call S(m) the entropy of the coffee beans when they are distributed between m cups. --- What is ?S = S(21) - S(5), the difference in entropy between when there are 21 cups and when there are 5 cups?
Question: 50g of gasoline are mixed with 40g of water. What is the average density kg/m^3 of the mixture? 55g of gasoline are mixed with 50g of water. What is the average density kg/m^3 of the mixt
Calculate the minimum possible magnitude u of the muzzle velocity which a projectile must have when fired from point A to reach a target B on the same horizontal plane 12 km away.
Which of the following equations is Newton's law in the vertical direction for the tennis ball closer to the observer? Recall that we use N for normal forces, F for contact forces between the two ba