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A hot-air balloon is ascending at the rate of 14 m/s and is 57 m above the ground when a package is dropped over the side.
(a) How long does the package take to reach the ground?
(b) With what speed does it hit the ground?
A research-level Van de Graaff generator has a 1.9-m-diameter metal sphere with a charge of 4.9 mC on it, What is the potential near its surface in MV
Tension is maintained in a string. The observed wave speed is 25 m/s when the suspended mass is 3.0 kg. (a) What is the mass per unit length of the string? (b) What is the wave speed when the suspended mass is 1.7 kg?
At a soft drink bottling plant, a horizontal section of pipe carrying citric acid in liquid form goes from a cross-sectional area of 8.00 cm2, determine the liquid flow speed and the liquid pressure
A carbon dioxide laser emits a sinusoidal electromagnetic wave that travels in vacuum in the negative x-direction, Write vector equations for E and B as functions of time and position
A plane wave of wavelength 580 nm is incident on a slit with a width of a = 0.50 mm. A thin converging lens of focal length +80 cm is placed between the slit, How far is the screen from the lens
A truck of mass 7,000 kg is traveling along a level road at an initial speed of 20 m/s. Find the total work done on the truck
Three capacitors, C1 = 3.30 µF, C2 = 7.26 µF, and C3 = 1.23 µF, are connected in series, What is the charge on the positive plate of the capacitor C2
Calculate the radius of the path, direction of the force experienced by the electron and the path of the electron through the magnetic field.
A 1.5 ?F capacitor is charged to 57 V by a battery, which is then removed. At time t = 0, Calculate the potential difference VL(t) across the inductor as a function o
What is the frequency of up and down oscillations of the wheel? Regard wheel as a mass on one end of a spring and regard the body of the car as a fixed support for the other end of the spring.
he density of free electrons in gold is 5.90x10^28 m^-3. The resistivity of gold is 2.44x10^-8 ohms.m at a temperature of 20 C, what is the drift velocity of the electrons in the wire
A 3.3 block of wood sits on a table. A 3.0 bullet, fired horizontally at a speed of 480, goes completely through the block, emerging at a speed of 200 .What is the speed of block immediately after the bullet exits.
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