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A city encompasses 820km2.
a) If an average of 2 inches of rain fell on the cityduring a summer storm, how many kilograms of rainfell?
b) one mole contains 6.02x1023 particles and hasmass of 18g, how many molecules of water fell in the storm?
A quarterback throws a pass that is a perfect spiral. In otherwords, the football does not wobble, but spins smoothly about anaxis passing through each end of the ball. how many revolutions has the ball made while in the air
Find the average magnitude of the induced emf if the change. The magnitude of the charge on a parallel plate capacitor is 4uC and the potential difference between the plates is 80V. What is the capacitance of this capacitor.
Two wires are identical, except that one is aluminum and one is nichrome. The aluminum wire has a resistance of 0.16 . What is the resistance of the nichrome wire
A car travels up a hill at a constant speed of 65 km/h and returns down the hill at a constant speed of 20 km/h. Calculate the average speed for the round trip
a 2.5-kg particle oscillates on a spring with spring constant 85 nm. at time t 1.0s the particle is at maximum
A boy flies a kite with the string at a 30 degree angle to the horizontal. The tension in the string is 4.5N. How much work does the string do on the boy
a typical hard drive in a computer spins at 5400rpm. what is the period in seconds
An object with a charge of 0.880 µC is placed at the center of a regular icosahedron with 20 equivalent surfaces. What is the electric flux through one surface of the icosahedron?
at time t a particle of mass m has a position vector position vector r a2 szligcirci at2circj where a and szlig are
On a workday the average decibel level of a busy street is 69 dB, with 102 cars passing a given point every minute. If the number of cars is condensed to 39 cars every minute on a weekend, what is the decibel level of street.
A 4.40 kg ball is dropped from a height of 14.0m above one end of a uniform bar that pivots at its center. The bar has mass 7.50kg, How high will the other ball go after collision
A uniform electric field exists in a region between twooppositely charged plates. What is the speed of the electron as it strikes the second plate
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