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A charged capacitor is connected to a resistor and switch as in the figure below. The circuit has a time constant of 1.60 s. Soon after the switch is closed, the charge on the capacitor is 90.0% of its initial charge.(a) Find the time interval required for the capacitor to reach this charge?in seconds?(b) If R = 260 k?, what is the value of C?in microFarads?
A particle with charge q and mass m moves in a horizontal plane at right angles to a uniform vertical magnetic field B. What is the cyclotron frequency
A student could either pull or push, at an angle of 30? from the horizontal, a 55kg crate on a horizontal surface, Calculate the minimum work required for both pulling and pushing
When 195 g of a substance is heated to 335°C and then plunged into a 100 g aluminum calorimeter cup containing 134 g of water at 13.0°C, What is the specific heat of the substance
A cylindrical copper rod and an iron rod with exactly the same dimensions are welded together end to end. What is the temperature at the midpoint where the rods are joined together
A proton is fired directly into a uniform electric field that is able to bring the charge momen- tarily to rest. How much work does the electric field do in stopping the proton
If this amount were shaped into a cube, what would be the length of one edge of that cube (in meters)
A copper ion with a single electron (denoted Cu28+) is in an excited state with radius the same as that of the ground state of hydrogen. How much energy in eV is needed to ionize the ion from this excited state
A conical pendulum is formed by attaching a 41.0 g mass to a 1.3 m string. The mass swings around a horizontal circle of radius 32.0 cm. What is the tension in the string
Suppose you have two equal mass objects both on a gentle incline. One is a glider on an air track while the other is a ball on a straight slope. Explain what type of energy both objects have
Reading glasses of what power are needed for a person whose near point is 110cm, so that he can read a computer screen at 52cm? suppose a lens-eye distance of 2cm.
A velodrome track is banked so that a bicycle traveling at 78.2 km/h will have no tendency to slip to either side when traveling on the path that has a radius of curvature of 76.0 m
Why is you are not harmed with the contact of a charged metal ball, although its voltage may be very high? Is the reason similar to why you are not harmed by greater-than-10000 C sparks from the Fourth-of-July sparkler? Define your answer in terms..
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