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A metal bar is used to conduct heat. When the temperature at one end is 100 C and at the other is 20 C, heat is transferred at a rate of 16 J/s. If the temperature of the hotter end is reduced to 80 C, what will be the rate of heat transfer?
While john is travelling along an interstate highway, he notices a 166 mile marker as he passes through town. Later john passes another mile marker, 105.
A pipeline of 0.2m in diameter is flowing with water and ends in a constricted pipe of 0.1m diameter. find the velocity and the flow rate in the constricted section
accelerates it to the right. It is observed that it takes the box 3.7 seconds to travel 61 meters. Illustrate what is the magnitude of the force?
A pumpkin sets in front of a mirror with radius of curvature of -20 cm. How far away is the pumpkin from the mirror
An unstable particle at rest spontaneously breaks into two fragments of unequal mass. The mass of the first fragment is 2.80 multiply.gif 10-28 kg, what is the speed of the heavier fragment
An ideal gas is compressed from a volume of 400 cm^3 to a volume of 150 cm^3 slowly and isothermally in a piston-cylinder system. If the final pressure is 100 kPa, determine a) the work done on the gas and b) the heat transfer (specify whether the..
A 72 kg man is riding on a 40 kg cart traveling at a speed of 2.5 m/s. What is the resulting change in the cart's speed, including sign
The summit of a mountain 2450 m above a baseball camp is measured on a map to be 4 m horizontally from the base camp in a direction 32.4 west of the north. Illustrate what are the components of the displacement vector from the camp to the summit
You illuminate a slit of width 0.0667 mm with light of wavelength 721 nm, What is the width, in centimeters, of the pattern's central maximum
A cockroach of mass m lies on the rim of a uniform disk of mass 7.00 m that can rotate freely about its center like the merry-go-round. At first the cockroach and disk rotate together with an angular velocity of 0.220 rad/s. Then the cockroach walks ..
A 280 g block on a 50.00 cm-long string swings in a circle on a horizontal, frictionless table at 70 rpm.
Cells maintain a high concentration of macromolecules inside them. How do you expect this to affect the osmotic pressure inside the cell? What mechanisms does the cell use to counterbalance osmotic pressure? What are "depletion forces" and why are..
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