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A dart is thrown horizontally with an initial speed of 17 m/s toward point P, the bull's-eye on a dart board. It hits at point Q on the rim, vertically below P, 0.19 s later.
In Millikan's experiment, an oil drop of radius 2.197 µm and density 0.848 g/cm3 is suspended in chamber C when a downward-pointing electric field of 1.92 105 N/C is applied. Find the charge
What is the rate at which this work is done by the electric organs during a pulse?
A uniform electrical field is established by connecting the plates of a parallel-plate capacitor to a 11V battery. The plates of the capacitor are separated a distance 3.50 cm. a) What is the magni
What is the (a) magnitude and (b) direction of the boat's velocity relative to the ground? Give the direction as the angle of the velocity from due north, positive if to the east and negative if to
Use the value of the Electric Field strength that you determined in part 2. this is part 2 2. A solid conducting sphere (or any shaped conductor), charged either positively or negatively, has no Ele
A small charged bead has a mass of 3.7 . It is held in a uniform electric field = (200,000 , up). When the bead is released, it accelerates upward with an acceleration of 27 .
A 1.2 m long bar of porcelain is placed in a laboratory furnace and heated to 1005 degrees C. If the final length of the bar is 1.207 m, what was the original temperature? Please show your work.
What is the potential difference between the plates when the charge on the capacitor plates is 4.2mu C ?
For a diffusion analysis where the temperature is not a fixed variable, calculate the diffusivity of nickel in iron at 800 degrees C.
Space vehicles traveling through Earth's radiation belts can intercept a significant number of electrons. The resulting charge buildup can damage electronic components and disrupt operations.
Express the position vectors of the tip of the hour hand () and the tip of the minute hand () at the following times. (a) 12:00 = ( m)
Are the components of a vector unique? Are the components of a force equivalent, in their effect, to the force itself? Doe the order in which you add two or more vectors affect the resultant of the
Two identical metal spheres A and B are connected by a plastic rod. Both are initially neutral. 4.0×10^12 electrons are added to sphere A, then the connecting rod is removed. Afterward, what
An electron with velocity v= 1x10^6 m/s is sent between the plates of a capacitor where the electric field is E=500 V/m. if the distance the electron travels through the field is 1cm, how far is it
Find the magnitude and direction of F2 when the acceleration of the box is (a) +4.2 m/s2, (b) -4.2 m/s2, and (c) 0 m /s2
A charge of +22.2 C is at the origin. When charge Q is placed at 2 m along the positive x axis, the electric field at 2 m along the negative x axis becomes zero. What is the value of Q? Express the
A solid copper and glass sphere are equally negatively and positively charged, respectively. Draw diagrams showing the distribution of the charges of both spheres when they are separated by 1) a la
A charged styrofoam ball of mass 100g hangs motionless from a string that makes and angle 10 degrees with respect to vertical. The inclination of the string is due to a horizontal electric force on
A parallel-plate capacitor is made from two aluminum-foil sheets, each 5.4cm wide and 5.9m long. Between the sheets is a Teflon strip of the same width and length that is 4.0×10-2mm thick. Wha
Two point charges are placed along a horizontal axis with the following values and positions: +3 µC at x = 0 cm and - 11 µC at x = 53 cm. At what point (the coordinate) along the x axis
A bartender slides a beer mug at 1.9 m/s towards a customer at the end of a frictionless bar that is 1.1 m tall. The customer makes a grab for the mug and misses, and the mug sails off the end of th
The plates are separated by 0.30mm, and the space between the plates is filled with a dielectric with dielectric constant \kappa. When the charge on the capacitor is 1.8\mu C the potential differenc
Assuming 100% efficiency, to what height can the motor lift a 6.0- g mass? What initial voltage must the capacitor have if it is to lift a 6.0 g} mass through a height of 1.3cm ?
250 cm3 of hot tea at 89°C are poured into a very thin paper cup with 10 g of crushed ice at 0°C. Calculate the final temperature of the "ice tea". (Hint: think about two processes: melting