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During a stress test of the cardiovascular system, a patient walks and runs on a treadmill.
(a) Is the energy expended by the patient equivalent to the energy of walking and running on the ground? Explain.
(b) What effect, if any, does tilting the treadmill upward have? Discuss.
A converging lens (f=+20cm) is located 60cm to the left of a diverging (f=-30cm). What is the overall magnification of the object
The human visual resolution is 1 minute of arc. Assuming that you are looking down an isolated road at night. at what distance can you distinguish the two headlights of an approaching car?
you make a homemade capacitor out of two flat circular metal plates each of radius 5 cm and hold them a distance of 1
A proton is fired from far away toward the nucleus of a mercury atom. Mercury is element number 80, and the diameter of the nucleus is 14.0 fm. find its closest approach to the surface of the nucleus
An astronomer wishes to construct a telescope that will brighten point scourses by a factor of 16,900 times. If the human eye has an average diameter of about 0.5 cm what diameter should the telescope's primary lens/mirror be?
coast guard pararescue jumpers are trained to leap from helicopters into the sea to save boaters in distress. the
A 10-kg package is raised vertically from rest by an elevator at a constant acceleration of 2.5 m/s2. Determine the kinetic energy of the package at 13 s after the elevator began raising the package.
What would be the magnification of a telescope having an object lens of focal length 50 cm and an eyepiece of focal legth 10 cm
without moving you will suddenly see the penny magically appear. if you look into the cup at an angle of 70.0 degrees
question our milky way galaxy is 100000 ly in diameter. a spaceship crossing the galaxy measures the galaxys diameter
A hotel elevator ascends 200 m with maximum speed of 5 m/s. Find how long it takes to make the complete trip from top to bottom
Assume you have a car with a 125-hp engine. Find how large a solar panel would you need to replace the engine with solar power
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