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A skier wears a goose down jacket of thickness 3.75cm and total surface area of 1.25m^2. The rate at which heat is conducted from the skin to the outside surface of the down is 41.67W. If the temperature at the surface of the clothing is -16.0degrees Celcius, determine the temperature at the surface of the skin. (Thermal conductivity of goose down = 0.025 (J/(s.m.degree Celcius))
An electric field of intensity 2.5 kN/C is applied along the x-axis. Calculate the electric flux through a rectangular plane 0.350 m wide and 0.70 m long if the following conditions are true.
Suppose this rod can expand in sections like an umbrella shaft. Calculate the final angular speed if it expands in a totaly length of 2.0 m while rotating, assuming its angular momentum is conserved
Suppose you have an electric hot water heater for your house which is an aluminum cylinder which has a 0.44 m radius and is 1.8 m high. The walls are 1.0 cm thick.
A gasoline engine absorbs 4190 J of heat and performs 3170 J of mechanical work for each turn of the engine shaft
A student pulls a box of books on a smooth horizontal floor with a force of 100 N in a direction of 37 degrees above the horizontal. If the mass of the box and the books is 40 kg, what is the normal force on box? a. 332 N b. 312 N c. 392 N d. 292 N
Charge Q = 10E-8 C is placed in the origin. Location A is -3.00m from the charge while location B is 2.00m from the charge. Which point is at the higher potential
Find out the electric field at radius
A group of hikers hears an echo 5 s after shouting. If the temperature is 16.0°C, how far away is the mountain that reflected the sound wave.
An object moving with uniform acceleration has a velocity of 10.0 cm/s in the positive x-direction when its x-coordinate is 3.09 cm. If its x-coordinate 3.05 s later is ?5.00 cm, what is its acceleration?
An eagle (mA = 4.3 kg) moving with speed vA = 7.8 m/s is on a collision course with a second eagle (mB = 5.6 kg) moving at vB = 10.2 m/s in a direction perpendicular to the first
A light but rigid stick is attached to a small weight. The other end of the stick is attached to a pivot. The pivot allows the stick and weight to spin in a vertical circle. how fast should the weight be thrown downward
A 5.43 kg block free to move on a horizontal, frictionless surface is attached to one end of a light horizontal spring. find the speed of the block at the equilibrium position of the spring
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