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A pot of water is located in a garage to keep the garage from getting to cold when the weather forecast calls for subfreezing temperatures. The pot contains 125 kilogram of water, initially at 20oC. Find how long must a standard 1.5 kW heater run to put as much heat into the garage as the water would transfer if it froze completely at 0oC in that similar length of time?
illustrate what is the magnitude of the acceleration of the box and hanging mass?
A small dog has thick fur, with a thermal conductivity of 0.040W/(m • K). The dog's metabolism produces heat at a rate of36 W and its internal (body) temperature is 36°C. calculate what is the outside temperature
Find the electrical and gravitational forces between the proton and electron in a hydrogen atom. Which force holds it together
Where does the bare (5) come from, in the spring equation. I know where the .5 comes from (1/2), I know where the 1.2 comes from (Spring force), I know where the .05 comes from (5 CM, right?) -- so where does the 5 come from, and why isn't the .05 cm..
A train normally travels at a uniform speed of 72 km/h on a long stretch of straight, level track. how much time is lost in stopping at the station
A factory worker pushes a crate of mass 32.0kg a distance of 4.85 along a level floor at constant velocity by pushing horizontally on it. How much work is done on the crate by friction
In a football game, a receiver is standing still, having just caught a pass. Before he can move, a tackler, running at a velocityof +3.79 m/s, grabs him. The tackler holds onto the receiver, andthe two move off together with a velocity of +1.55 m/..
Light of wavelength 646nm from a distant source is incident on a slit .720mm wide, What is the distance between the two dark fringes on either side of the central bright fringe
A vertical solid-steel post 26.0 cm in diameter and 2.53 m long is required to support a load of 8200 kg. You may ignore the weight of the post. What is the strain in the post and the change in the posts' length when the load is applied?
To verify her suspicion that a rock specimen is hollow, a geologist weighs the specimen in air and in water. What fraction of the specimen's apparent volume is solid
an 80 kg person in outer space is at rest when he catches a 10 kg asteroid moving at 15ms. what is the final velocity
The spheres are then separated so that there is a distance of 200mm between their centers. What is the force between them?
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