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Suppose your waffle iron is rated at 1.20 kW when connected to a 3.00 102 V source.
(a) What current does the waffle iron carry?
(b) What is its resistance?
An engine does 20000 J of work and rejects 6120 J of heat into a cold reservoir whose temperature is 285 K. What would be the smallest possible temperature of the hot reservoir.
An artillery shell is fired with an initial velocity of 300 m/s at 47.5° above the horizontal. To clear an avalanche, it explodes on a mountainside 47 s after firing. What is the x and y components of the shell where it explodes, relative to its f..
A 51.0-g Super Ball traveling at 27.0 m/s bounces off a brick wall and rebounds at 21.5 m/s. what is the magnitude of the average acceleration of the ball during this time interval
The larger the mass of a star, the shorter its Main Sequence lifetime becomes. Estimat the Main Sequence lifetime of a star with a mass of 6 Msolar
A car is approaching a relecting wall. A stationary observer behind the car hears a sound of frequency 745Hz from the horn, What is the frequency of the car horn
A radio station broadcasts with a power of 50,000 watts. Estimate the average intensity of the wave at a distance of 50 km from the radio transmitting antenna
A nozzle is now attached to the end of the hose. If the nozzle diameter is one-third the diameter of the hose, what is the speed of the water leaving the nozzle
A plane, diving with constant speed at an angle of 49 ° with the vertical, releases a projectile at an altitude of 570 m. The projectile hits the ground 7.0 s after release.
A geiger-muller tube is a type of gas-filled radiation detector. It can detect particles like X-rays, alpha particles and beta rays (electrons). what is the density of the gas in this geiger tube
A string is stretched between fixed supports separated by 73.0 cm. It is observed to have resonant frequencies of 390, What is the wave speed for this string
When the afternoon Sun reaches an angle of 27.0° above the horizon, sunlight ceases to illuminate the bottom of the tank. Evaluate how deep is the tank?
Two electrons are fixed 2.6 cm apart. Another electron is shot from infinity and comes to rest midway between the two. What was its initial speed
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