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A storm cloud and the ground represent the plates of a capacitor. During a storm, the capacitor has a potential difference of 2.50 108 V between its plates and a charge of 40.0 C. A lightning strike delivers 1.00% of the energy of the capacitor to a tree on the ground. How much sap in the tree can be boiled away? Model the sap as water initially at 32.0°C. Water has a specific heat of 4 186 J/kg · °C, a boiling point of 100°C, and a latent heat of vaporization of 2.26 x 106 J/kg. kg
You're an optometrist, mounting a projector at the back of your 4.2-m-long exam room, 2.6m above the floor. At what height should you center the pattern on the wall
A car initially traveling eastward turns north by traveling in a circular path at uniform speed, Determine its average acceleration during the 30.0-s interval
A large air conditioner has a resistance of 8.0?and an inductive reactance of 14. Find the average power consumed by the air conditioner
The coeficient of friction on a horizontal cicular track, radius 0.25 km, is 0.7. How fast can a car go around skidding out
An object of mass 3.0 kg and travelling at 2.0 m/s collides head-on with a 2.0 kg object travelling in the opposite direction at 3.0 m/s. Determine the velocity of each object after impact
How much does the spring stretch. A 1200 {rm kg} car traveling at a speed of 15 {rm m/s} skids to a halt on wet concrete where f_k = 0.20. how long are the skid marks.
A small ball of mass 0.50 g has an electric charge of 1.0 X 10^(-5) C. The ball has an initial velocity of 20 m/s, directed vertically upward. Find the maximum height of the ball
A ball of mass 0.1 kg is suspended vertically from the ceiling with a "massless" string and brought to rest. what will be the magnitude of the resulting angular acceleration
You are riding a bicycle at 15.0 m/s toward a woman who is holdinga screaming baby. You note that you hear the scream at a perfect middle A (440 Hz) Find the actual frequency of the baby's scream.
a solenoid with length of 2.71 m and N= 311 turns/m carries a current 2.63 A. It stores 2.57 J of energy. What is the cross-sectional area of the solenoid
A continuous stream of electrons flows along a long straight paththrough a piece of laboratory equipment: 5.750e+18 ofthem pass through the equipment each second. What is the strengthof the magnetic field created by this stream at a distance of0.250 ..
The cone of a loudspeaker vibrates in SHM at a frequency of 262 Hz. The amplitude at the center of the cone is xm = 1.5 x 10-4m, What is its maximum velocity and acceleratio
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