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A celebrity holds a press conference, which is televised live. A television viewer hears the sound picked up by the microphone directly in front of the celebrity. The viewer is seated 2.3 meter from the television set. A reporter at the press conference is placed 4.1 meter from the microphone and hears the words directly at the very same instant that the television viewer hears them. Using a value of 343 m/s for the speed of sound, find the maximum distance between television viewer and celebrity?
A crate of mass m1 on a frictionless inclined plane is attached to another crate of mass m2 by a massless rope. The rope passes over an ideal pulley so the mass m2 is suspended in air.
An air bubble is expelled by an underwater diver at a depth of 24.6 m. Find the final volume of the bubble if its initial volume is 11.4 cm3
Find the buoyant force acting on the He balloon. The volume of the balloon might be calculated from the following. The balloon has a shape of a sphere with the diameter of 10 m. How many more mass may the balloon lift
a 3.04 microf capacitor is charged by a 18.0 v battery. it is disconnected from the battery and then connected to an
a hoop with a mass of 2.75 kg is rolling without slipping along a horizontal surface with a speed of 4.50 ms when it
A cardinal (Richmondena cardinalis) of mass 4.10×10^-2 kg and a baseball of mass 0.144 kg have the similar kinetic energy. What is the ratio of the cardinal's magnitude pc of momentum to the magnitude pb of baseball's momentum.
After 2.02 days, the activity of a sample of an unknown type radioactive material has decreased to 88.2% of the initial activity. What is the half-life of this material
question the total angular momentum of a flywheel having a rotational inertia 0.0924 kg-m2 about its axis decreases
A water heater is operated by solar power. If the solarcollector has an area of 6.00 m2, and the intensitydelivered by sunlight is 550 W/m2, how long does it taketo increase the temperature of 1.00 m3 of water from20.0°C to 60.0°C?
A rock is thrown vertically upward with an initial speed of 100 ft/s. At the same instant another rock is thrown vertically downward from the top of a 280 ft cliff with an initial speed of 40 ft/s. Find the time when the rocks pass each other
using the simulation adjust the transmitter so that it is in sinusoidal mode and the electrons are oscillating up and
A dog and a sled are moving due east together with a velocity of 20m/s ( Vi= 20 m/s ). The dog (with a mass of 20 kg, or Md= 20kg) jumps off of the sled and travels 30 degrees north of east. The sled (with a mass of 5kg or Ms=5 kg) is now headed due ..
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