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Solve the all parts of given problem:
Problem: Running on a treadmill is slightly easier than running outside because there is no drag force to work against. Suppose a 60 kg runner completes a 5.0 km race in 19 minutes.
Part I: Determine the drag force on the runner during the race. Suppose that the cross section area of the runner is 0.72 m2 and the density of air is 1.2 kg/m3.
Part II: What is this force as a fraction of the runner's weight?
I want help to find this force as a fraction of the runner's weight.
The energy released by each fission within the core of a nuclear reactor is 2.00 x 102 MeV. Determine the power (in watts) that the reactor generates
question a balloon is directly west of two observing stations 10 km apart. the angles of elevation of the balloon from
A 20.0-kg uniform plank is supported by the floor at one end and by a vertical rope at the other, find the magnitude of the force that the floor exerts on the plank
Whenever two Apollo astronauts were on the surface of the Moon, a third astronaut orbited the Moon. evaluate the astronaut's orbital speed
An electric heater plugged into a 115-V AC outlet uses an average electric power of 1200 W. What are the maximum instantaneous power
A source emits sound uniformly in all directions. There are no reflections of the sound. At the distance r1 from the source the sound is 3.9 dB louder than it is at a distance r2 from the source. What is the ratio r1/r2.
When the sodium salt of an organic acid is strongly heated, it yields sodium carbonate. If the weight ratio of the sodium salt to sodium carbonate obtained is 5 : 4, what is the equivalent weight of the acid ?
A cylinder contains a mixture of helium and argon gas in equilibrium at a temperature of 208 C. What is the average kinetic energy of each type of molecule
Suppose a rocket launches with an acceleration of 33.0m/s2. What is the apparent weight of a 95-kg astronaut aboard this rocket
A person with perfect pitch sits on a bus bench listening to the 441-Hz horn of an approaching car. If the person detects a frequency of 479 -Hz, how fast is the car moving.
The brakes of a truck cause it to slow down by applying a retarding force of 4060 N to the truck over a distance of 1150 m
"Specifically, they must have complementary polarizations. For example, if photon A is later measured to have horizontal (0 degrees) polarization, then the other photon must "collapse" into the complementary state of vertical (90 degrees) polariza..
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