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A dietary Calorie is actually a kilocalorie (note that by convention a capital 'C' is always used to indicate a dietary calorie and a lower case 'c' is used otherwise). Given that 1 cal = 4.186 J express the average daily dietary intake of a person in terms of Joules.
A projectile is fired at time t = 0.0 s, from point 0 at edge of a cliff, with initial velocity components of vix=30m/s and viy = 100m/s. The projectile rises, and then falls into the sea at point P. The time of flight of the projectile is 20s.
A hill that has a 17.2 % grade is one that rises 17.2 m vertically for every 100.0 m of distance in the horizontal direction. At what angle is such a hill inclined above the horizontal?
Two loudspeakers on a concert stage are vibrating in phase. A listener is 57m from the left speaker and 30m from the right one. The listener can respond to all frequencies from 20 to 20 000 Hz.
A wave traveling along the x axis is described mathematically by the equation y = 0.17sin(8.1?t + 0.82?x), What is the speed of the wave
A transformer is used by a European traveler while she is visiting the United States. find the rate at which heat is generated in the transformer itself
The ratio of the number of turns in the primary to the number of turns in the secondary of a step-down transformer is 25:1. how much power is delivered to the secondary
A sample of an unknown material appears to weigh 280 N in air and 180 N when immersed in alcohol of specific gravity 0.700. What is the density of the material
A sound wave of frequency 1840 Hz., propagating through air at 0 degrees Celsius, has a pressure amplitude of 15.0 Pa. What is the maximum particle speed
A 0.30-kg puck, initially at rest on a frictionless horizontal surface, is struck by a 0.20-kg puck that is initially moving along the x-axis with a velocity of7.1 m/s. Find the fraction of kinetic energy lost in the collision
A fully charged capacitor with a voltage of 120 V is discharged through a resistor. At this time, what is the voltage across the resistor
Two kids decide to race from one end of a 20 meter long moving sidewalk to the other and back. Phillip runs on the sidewalk at 2.0 meters/sec (relative to the sidewalk). Who wins the race
There are two identical, positively charged conducting spheres fixed in space, find the initial charge on each sphere, q1 and q2 if initially q1
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