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A steam pipe is covered with 1.50 cm thick insulating material with a thermal conductivity of 0.200 cal/cm·°C·s. How much energy is lost every second when the steam is at 160°C and the surrounding air is at 20.0°C? The pipe has a circumference of 800 cm and a length of 45.0 m. Neglect losses through the ends of the pipe.
Two shuffleboard disks of equal mass, one orange and the other yellow, are involved in an elastic, glancing collision. Determine the final speed of each disk
a spinning disc rotating at 130 rev/min slows and stops 31 s later. how many revolutions did the disc make during this time
A thin lens made of glass has a focal length in air of 16.3 cm. A lens of exactly the same shape is then made from diamond. What is the focal length of the diamond lens in air
A very long non conducting cylinder of diameter 10.0 cm carries charge distributed uniformly over its surface. Each meter of length carries +5.50 C of charge. A proton is released from rest just outside the surface.
A brick is thrown at a speed of 72 mph at a wall that is 15 ft away. How much force does the wall exert on the brick and in what direction
A 140kg- tackler moving at 2.3 m/s meets head-on (and tackles) an 99 kg- halfback moving at 7.0 m/s. What will be their mutual speed immediately after the collision
A horizontal water main with a cross-sectional area of 208 cm2 necks down to a pipe of area 45.0 cm2. Determine the flow rate through the system
Answers for an elevator are moving down with an acceleration of 3.360 m/s. what would be the apparent weight of a 64.20 kg man in the elevator.
a parallel-plate air capacitor has a capacitance of 500pf and a charge of magnitude 0.250uc on each plate. the plates
a 2.0kg projectile if fired with initial velocity components Vox= 30 m/s and Voy= 40 m/s from a point on the earth's surface. What is the kinetic energy of the projectile
A 9.27-m-long glider with a mass of 545.48 kg (including the passengers) is gliding horizontally through the air at 29.02 m/s, What is the glider's horizontal velocity
A 0.17- kg block on a wooden table is given a sharp blow with a hammer. The block then slides across the table to a stop. How far does the block go
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