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When a 370 nF air capacitor (1 nF =10-9 F) is connected to a power supply, the energystored in the capacitor is 1.85 10-5 J. While the capacitor is kept connected to the power supply, a slab ofdielectric is inserted that completely fills the space between the plates. This increases the stored energy by 2.36 10-5 J.a) What is the potential difference between the capacitor plates?b) What is the dielectric constant of the slab?
John's face is 20 cm in front of a concave shaving mirror of focal length 30 cm. How large an image does he observe
A Styrofoam cup holding 135 g of hot water at 93°C cools to room temperature, 22.0°C. What is the change in entropy of the room
An object with a mass of 84.0 g displaces 240.0 ml of water when it is completely immersed. What is the buoyant force on the mass
A square loop of wire consisting of a single turn is perpendicular to a uniform magnetic field. What is the flux that passes through the circular loop
Two shuffleboard disks of equal mass, one orange and the other yellow, are involved in an elastic, glancing collision. Determine the final speed of each disk
a heart defibrillator is charged to 350V. It is connected to a patient's chest and allowed to discharge through the heart. After 2secs, how much charge resides on the capacitor
Eq: D(x,t) = 2.4sin(0.60x)cos(42t) where x and D are in cm and t is in sec. what is the distance between nodes
particle moves in a plane according to the equations of motion x = Rsin(?t) + ?Rt y = Rcos(?t) + R ; Find the instantaneous velocity and acceleration when the particle is at its maximum and minimum value of y
Tarzan swings on a 34.0-m-long vine initially inclined at an angle of 31.0° with the vertical, What is his speed at the bottom of the swing if he starts from rest
An object carries a charge of -8.0 microC, while another carries a charge of -2.0 microC. How many electrons must be transferred from the first object to the second
90 kW of power is delivered to the other side of a city by apair of power lines with the voltage difference of 13952.8 V. How much power is waisted as heat in both lines together
A "110-watt" lightbulb uses an average power of 110 W when connected to an rms voltage of 120 V. What is the resistance of the lightbulb? What is the maximum current in the bulb? What is the maximum power used by the bulb at any given instant of t..
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