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When viewed in a spherical mirror, the image of a setting sun is a virtual image. The image lies 13.0 cm behind the mirror.
(a) What is the radius of curvature of the mirror?
_______________ cm
A plucked guitar string produces a sound wave of frequency 440 Hz. (a) What is the wavelength of the sound wave (assume the speed of sound in air is 340 m/s)? (b) How much time elapses between the impacts of two adjacent compression on your eardru..
A 910-kg sports car collides into the rear end of a 2100-kgSUV stopped at a red light. The bumpers lock, the brakes are locked, What was the speed sports car at impact
A heat engine with an efficiency of 35% performs 160j of work, how much heat is discharged to the lower temperature
A railroad boxcar that has " due east" momentum of 15,000 kgm/sec collides with and couples with a similar boxcar that has "due west" momentum of 20,000kgm/sec. After collision, the combination has ( ) kgm/sec total of momentum.
Copper has an electrical resistivity %u03C1 = 1.72 x 10-8 %u03A9m. What is the electrical resistance of a copper wire with a radius of 1.0 mm and a length of 25 m
A 0.031 kg aluminum bullet traveling at 471 m/s strikes an armor plate and comes to a stop. compute the bullet's temperature change in degrees Celsius
selzer estimates the total cost of servicing the warranties will be $120,000 for 2 years. Estimate revenues earned on basis of costs incurred an estimated costs.
On a cold day, 16000 J of heat leaks out of a house. The inside temperature is 20.0° C, What is the increase in the entropy of the universe
An RL circuit has a 5 k resistor and a 1mH inductor. This circuit is driven by a 100 Hz sine wave with 1V amplitude. What is the amplitude of the current in the circuit
What is the terminal speed of a 5.6 kg spherical ball with a radius of 3.0 cm and a drag coefficient of 1.55? The density of the air through which the ball falls is 1.2 kg/m3
A microphone is attached to a spring that is suspended from the ceiling. Directly below on the floor is a stationary 412-hertz source of sound. determine the amplitude of the simple harmonic motion.
A highway curve with a radius of 400 m is banked properly for a car traveling 80 km/h. how much sideways force must the tires exert against the road if the car does not skid
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