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How high will a hot air balloon rise if the temperature inside is maintained at 340 K? Assume that the ambient temperature is 300 K.Assume that the pressure inside and outside are the same, but the density inside is reduced by heating. It is convenient to reference the calculation to the temperature of the atmosphereT0 = 300 K. This temperature corresponds to the density at sea level. To what height does the air balloon rise?Please give your answer in meters.
A long, non conducting, solid cylinder of radius 3.7 cm has anonuniform volume charge density ρ = Ar2, a function of the radial distance r from the cylinder axis. A = 2.4 µC/m5.
The electric field just above the surface of the charged drum of a photocopying machine has a magnitude E of 2.3 105 N/C.The drum has a length of 40 cm and a diameter of 11 cm. What is the total charge on the drum?
A horizontal wire is hung from the ceiling of a room by two massless strings. The wire has a length of 0.10 m anda mass of 0.008 kg. A uniform magnetic field ofmagnitude 0.075 T is directed from the ceiling to the floor.
Find the distance in (μm) between the plates of a parallel plate capacitor if, in the dielectric completely filling that region, an electric field of magnitude 67.5 MV/m gives a potential difference of 34.5 kV between the plates.
When point charges q1=+8.4uC and q2 = +5.6uC are brought near each other , each experience a repulsive force of magnitude 0.66 N. Determine the distance between the charges.
Suppose the strings on a violin are stretched with the same tension and each has the same length between its two fixed ends.The musical notes and corresponding fundamental frequencies of twoof these strings are G (196.0 Hz) and E (659.3 Hz).
Ball A is attached to one end of a rigid massless rod, while an identical ball B is attached to the center of the rod. Each ballhas a mass of m= 0.50 kg, and the length of each half rodis L= 0.1m.
If a car shifts gears from first to second after 5 seconds, when the speed is 60mph. Second to third happens after 10 secondswhen the speed is 85 mph. Its speed is 110 after 15seconds.
A 690-W space heater is designed for operation in Germany, wherehousehold electric outlets supply 230 V (rms) service. What is thepower output of the heater when plugged into a 120-V (rms) outletin a house in the United States? Ignore the effects of ..
A capacitor with air between its plates is charged to 140 V and then disconnected from the battery. Whena piece of glass is placed between the plates, the voltage acrossthe capacitor drops to 30 V. What is the dielectric constant of the glass?
If the terminals of a battery are connected across two identical resistors in series, the total power delivered by the battery is 8.0 W. what is the total power delivered by the battery
imagine you are standing in front of standard mirror. in order for you to be able to see a full-length view of yourself
A 6-kg stone is tied to a 0.79-m long string and swung around a circle at a constant angular velocity of 19 rad/s
13 cars in a circle at a boom box competition produce a 110 dB sound level at the center of the circle. What is the average sound level produced there by each
One component of a magnetic field has a magnitude of 0.070 T and points along the +x axis, Find the magnitude of the net magnetic force that acts on the particle
A 168N sign is supported from its top surface by two ropes that each make a 22.5o angle with the horizontal. The sign is not moving. How much force is in each rope
If a Mack truck with a mass mt = 20000 kg and a Honda Civic with a mass of mc=2000 kg have a head on collision and force upon the Mack truck is 1000 N
A certain species of ionized atoms produces an emission line spectrum according to the Bohr model, Find the next-to-the-longest wavelength in the series of lines
What is the escape speed on a spherical asteroid whose radius is 804 km and whose gravitational acceleration at the surface is 0.943 m/s2
A 0.300 kg} glider is moving to the right on a frictionless, horizontal air track with a speed of 0.900 m/s} when it makes a head-on collision with a stationary 0.150kg} glider. Find the final kinetic energy of first glider.
In a skating stunt known as "cracking-the-whip," a number of skaters hold hands and form a straight line. estimate the magnitude of the centripetal force that acts on him
a fisherman is dozing when a fish takes the line and pulls it with a tension F the spool of the reel is at rest intialy, find the magnitude of the final angular velocity of the spool
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