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A person's metabolic rate can be measured using what is called a flow calorimeter. The person is placed in a large insulated container through which water can flow. The flowing water carries away the heat produced by the body. If a resting person is known to have a thermal power output of 85 W, what will the temperature difference between the intake and outflow water be when the flow rate is 1.2 liters each 4 min?
In a specific heat experiment 212.0 grams of aluminum (C=913.0 J/kg.K) at 100.0°C) is mixed with 64.0 g water at 20.0°C. Find the entropy change of the aluminum
A rocket moves with a velocity of 0.91c to the right with respect to a stationary observer A. What is the velocity of observer
One end of a cord is fixed and a small 0.390-kg object is attached to the other end, obtain the tangential and radial components of acceleration
an athlete who was performing a long jump had a resultant velocity of 8.6 ms and a projection angle of 29deg at
An empty rubber balloon has a mass of 10-g. The balloon is filled with helium at a density of 181-kg/m^3. what is the tension in the line
Outer space is filled with a sea of photons, created in the early moments of the universe. What is the peak frequency of this radiation
A spherical conducting shell has an interior radius of 18 cm and an outer radius of 21cm. The shell carries a net charge of -2.4 micro coulombs. A point charge of charge +6.4 micro coulombs is placed at the center of spherical shell.
Zero, a hypothetical planet, has a mass of 4.0 1023 kg, a radius of 3.0 106 m, and no atmosphere. A 13 kg space probe is to be launched vertically from its surface.
The speed of the fastest-pitched baseball was 45.0 m/s , and the ball's mass was 145g. How many joules of kinetic energy did this ball have
A 5.0 kg box, starting from rest, slides down a 5.0 m high frictionless hill, then across a 2.0 m wide horizontal surface, and finally hits a horizontal spring with spring constant 500 N/m. find the speed of the box just before hitting the spring
Assume that a gold nucleus has a radius of 6.23 fm and analpha particle has a radius of 1.80 fm. What energy must an incident alpha particle have in order to "touch" the gold nucleus
An air bubble is expelled by an underwater diver at a depth of 17.2 m. Find the final volume of the bubble if its initial volume is 10.4 cm3
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