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A spherical shell of radius 10 cm has a charge 2×10–6 C distributed uniformly over its surface. Discover the electric field
a)
b) Just outside the shell
c) At a point 15 cm away from the centre
a roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. a passenger feels
a whistle of frequency 527 hz moves in a circle of radius 60.3 cm at an angular speed of 12.3 rads. what are a the
A thin, flat washer is a disk with an outer diameter of 14 cm and a hole in the center with a diameter of 3 cm. What is the electric field on the axis of the washer
A 20.0 kΩ resistor and a capacitor are connected in series and then a 15.0 Volt potential difference is suddenly applied across them. Find what is the capacitance of the capacitor
Your eye (diameter 2.5 cm) is able to focus the image of a tree on your retina. The tree is 24 m tall and 85 m away. What is the size of the image of the tree on your retina? (Be careful about the sign of the image size.) Show your work.
a 1200kg cannon is placed on a 12.0m tall tower. it fires a 72.0kg cannon ball that lands 81.3m away from the base of
a 1.0-cm-tall object is 60 cm in front of a diverging lens that has a -30 cm focal length. calculate the image position
a sailor in a small sailboat encounters shifting winds. she sails 2.00 km east then 3.50 km southeast and then an
a cup of coffee is on a table in an airplane flying at a constant altitude and a constant velocity. the coefficient of
A 1.50 ? 103-kg car starts from rest and accelerates uniformly to 16.5 m/s in 12.4 s. Find the average power developed by the engine
a 20-kg mass is attached to a spring. if the frequency of the simple harmonic motion is 2pi cycles what is the spring
A kid of mass 20kg is playing with a swing with an arm length of 5 m. His sister first pushes him such that the maximum angular deviation from vertical position is 0.2 radian (11.46 deg.).
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