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A heat flux meter attached to the inner surface of a 3-cm-thick refrigerator door indicates a heat flux of 25 W/m2 through the door. Also, the temperatures of the inner and the outer surfaces of the door are measured to be 7°C and 15°C, respectively. Determine the average thermal conductivity of the refrigerator door.
The velocity v of waves on a vibrating string depends on the tension T in the string and the mass per unit length λ of the string. Derive an expression for v by using the dimensional analysis method
Two force act on a 5.0kg object sitting on a frictionless horizontal surface. What is the acceleration of the object
Evaluate maximum altitude?
A pitcher throws a baseball vertically upward with an initial speed of 15.0 m/s, releasing the ball when it is 2.00 above the ground, How long is the ball in the air
Planet Z is 1.00×104km in diameter. The free-fall acceleration on Planet Z is 10.0m/s2. What is the mass of Planet Z
A 200 kilogram roller coaster car travels over the top of a 40-m high hill (Hill A) traveling at 10 meter per second. Obtain the speed of the car at the top of the second hill
If the rms electric field of this light is 18.0N/C at a distance of 1.50m from the bulb, what is the average total power radiated by the bulb
a point charge q 1.17times10-5 c is at the center of a conducting spherical shell of radius r 29.60 cm. the total
For the cases in which total internal refection is possible from either the top or bottom surface of a layer, determine the amount by which the angle of incidence exceeds the critical angle.
Assume a convex mirror has a radius of curvature of 13.5 m and that there is a car that is 10.8 m behind the mirror. For a flat mirror, the image distance would be -10.8 m and the magnification would be 1. Find the image distance and magnification..
What is the distance of closest approach of an alpha particle of speed v= 1.70 x10^7 m/s to a gold nucleus of Z = 79? How close would the alpha get to a copper nucleus of Z = 29? Assume that the gold and copper nuclei remain at rest.
What power is supplied to the starter motor of a large truck that draws 260 A of current from a 22.5 V battery hookup
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