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Consider a uranium nucleus to be a sphere of radius R = 7.4x10^-15m with a charge of 92e distributed uniformly throughout its volume. (a) What is the electric force exerted on an electron when it is 3.0x10^-15 m from the center of the nucleus? (b) What is the acceleration of the electron at this point?
A cubical piece of heat-shield-tile from the space shuttle measures 0.14 m on a side and has a thermal conductivity of 0.065 J/(s·m·C°). The outer surface of the tile is heated to a temperature of 1040°C, while the inner surface is maintained at a..
two positive point charges q1 16x10-6 c and q2 4 x10-6 c are separated by a distance 3 m.calculate the distance d
A neutral conductor completely encloses a hole inside of it. you observe that the outer surface of this conductor carries a charge of -12 microC. A) can you conclude that there is a charge inside the hole? b) how much charge is on the inner surfac..
Two objects are connected by a string that passes over a frictionless pulley as shown in the figure. Assume the incline is frictionless and take m1=2.00kg, m2=6.00kg and theta=55.0 degrees. (a) Draw free-body diagrams of both objects (b) find the mag..
When a 19.7 kg wheel with an angular speed of 2.30 rad/s is disconnected from a motor, a 0.219 N · m frictional torque slows the wheel to a stop. how long will it take for the wheel to come to rest
2.5 kg of water undergoes an isothermal, reversible process beginning at 100°C, saturated liquid and ending at 1.0 MPa. Find the change in specific entropy of the water
When ultraviolet light with a wavelength of 400.0 nm falls on a certain metal surface, the maximum kinetic energy of the emitted photoelectrons is measured to be 1.10 eV. What is the maximum kinetic energy of the photoelectrons
radium is a radioactive element whose nucleus emits an alpha particle a helium nucleus that has a kinetic energy of
A hollow sphere of negligible mass and radius R is completely filled with a liquid so that it's density is p. What is the density of the enlarged sphere
An object has a charge of -4.3 ?C. How many electrons must be removed so that the charge becomes +2.8 C?
A Block A block in the shape of a rectangularsolid has a cross-sectional area of 4.00cm2 across its width, a front-to-rear length of15.1 cm, and a resistance of 925 . Thematerial of which the block is made has 5.33 multiplied by 1022 conduction el..
What is the direction of E for points. find the balls initial speed.
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