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Two adjacent sources each emit a frequency of 800 Hz in air where the velocity of sound is 340 m/s. How much farther back would source 1 have to be moved so that an observer in front of the sources hears no sound?
A 1000 kg rocket sled at rest on level frictionless rails is loadedwith 25kg of propellent. What average force is experienced by the rocket during the burn
A microwave oven generates electromagnectic waves of frequency2.45 GHz. The microwaves enter the oven and are reflected by the walls. Calculate the speed of the micro waves from these data
Assume that a spacecraft lands on an asteroid and bores a hole perpendicular to its surface, what is the circumference and radius of that asteroid
A 1.2-kg mass suspended from a spring of spring constant 22 N.m-1 executes simple harmonic motion of amplitude 5 cm. What is the speed of the mass when the spring is stretched 2.5 cm from its equilibrium position?
If the total momentum of a system is a constant, then we say that the total momentum is conserved. A consequence of Newton’s laws of physics is that the total momentum of a system is conserved whenever the net external force on the system is zero.
A proton with a speed of 3.0 x 105 m/s falls through a potential difference V and thereby increases its speed to 9.0 x 105 m/s. Through what potential difference did the proton fall
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. obtain the speed of a satellite in a geosynchronous orbit
A sports car with a mass of 1000 kg crashes into the rear an SUV with amass of 2400 kg that is stopped at a RED light. The bumpers lock and two cars skid forward a distance of 3 meters before coming to a stop. if the coefficient of kinetic friction i..
A continuous line of charge lies along the x axis, extending from x = +x0 to positive infinity. The line carries positive charge with a uniform linear charge density ?0.
a scanning electron microscope uses a uniform 15.0-knc electric field to accelerate electrons horizontally toward the
The wheel on an upside-down bicycle moves through 17.5 rad in 5.10seconds. what is the wheel's angular acceleration if its initialangular speed is 1.0 rad/s? answer in units of rad/s2
How much heat does it take to enhance the temperature of 8.00 of an ideal monatomic gas from 22.0 to 61.0 if the gas is held at constant volume.
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