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A steam pipe is covered with 1.50 cm thick insulating material of thermal conductivity .2000 cal/cm degress C s. How much energy is lost every second when the steam is at 205 degrees C and the surrounding air is 15.0 degrees C. The pipe has a circumference of 800 cm and a length of 50.0 m. (Neglect losses through end of pipe)
q1. a piece of wood is 6.00 m long 0.260 m wide and 0.060 m thick. its density is 600kgm cubed. what volume of iron p
A 55.0 kg crate rests on a level floor at a shipping dock. What horizontal pushing force is required to just start the crate moving
A 89.0 kg skydiver hanging from a parachute bounces up and down with a period of 1.50 s. What is the new period of oscillation when a second skydiver
The intensity of sunlight hitting the Earth is about 1300 W/m^2. How much pressure (per square meter) does it exert
The left arm of the tube has a cross-sectional area of A1=10 cm2, and the right arm has a cross-sectional area of A2=5 cm2. find the length of the water column in the right arm of the U-tube
In a hydrogen atom, proton and electron are separated by 5.29×10?11m. What's the gravitational force between the two particles
a 1950-kg car experiences a combined force of air resistance and friction that has the same magnitude whether the car
Starting from rest, a boat increases its speed to4.12 m/s with constant acceleration. What is the boat's average speed? If it takes the boat 4.62 s to reach this speed, how far has it traveled?
A 4-turn coil 2.0cm in diameter is rotated at 20 rev/s about an axis perpendicular to a uniform magnetic field. What is the magnetic field strength
A large pot is placed on a stove and 1.2 kg of water at 14°C is added to the pot. The temperature of the water is raised evenly to 100°C just before it starts to boil. What amount of heat is absorbed by the water in reaching 100°C
The sunball diameter in the calculation of the suns diameter
At the start of a race, a four-man bobsled team pushes their sled as fast as they can along a 50 m flat starting stretch. find the speed of the sled right before the team jumps on the sled
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