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Suppose that one weekend day a hiker exerts 200 Watts of power while ascending 300 meters on a steep trail without a pack. The hiker repeats this trip the following weekend but is carrying an additional 10 kilograms in a pack. How much longer should the hiker expect her ascent to take assuming her power output remains the same.
Recall that it takes approximately 10 joules to raise 1 kilogram 1 meter.
The piezoelectric transducers of the ultrasound machine generatefrequencies of 7.4 MHz and 10.5 MHz. Assuming that one wavelength is the size of the smallest object that can be imaged,
An iron rod of diameter 2.6 cm and length 80.0 cm is to be inserted inside a long solenoid to make an electromagnet. how many turns of wire will be needed for the solenoid
Two particles with masses 4m and 3m are moving toward each other along the x axis with the same initial speeds vi. Find the final speeds of the particles
Create a MATLAB function to analyze signals represented numerically. The function should have the given two inputs:
A copper vessel of mass 1000gm contains 500 gm of water at 50 degrees Celsius. An ice cube of mass 100 gm at temperature -30 degrees Celsius is dropped into this vessel. Does the ice melt? What is the final temperature?
the amount of radiant power produced by the sun is approximately 3.9 x 1026 w. assuming the sun to be a perfect
A car is hauling a 88 kg trailer, to whichit is connected by a spring. The spring constant is 2150 N/m. The car accelerates with an acceleration of0.33 m/s2. By how much does thespring stretch?
An electron is released from rest at the negative plate of a parallel plate capacitor and accelerates to the positive plate. What is the kinetic energy of the electron just as it reaches the positive plate
A pendulum consists of a 3.7 kg stone swinging on a 4.4 m string of negligible mass. The stone has a speed of 8.2 m/s when it passes its lowest point. What is the greatest angle with the vertical that the string will reach during the stone's motion
A ferris wheel at a carnival has a radius of 8 meters and rotates once every 15 seconds. A 10:1 scale model of the ferris wheel also rotates once every 15 seconds. Which has a higher angular velocity?
An object is 1.6 m to the left of a lens of focal length 0.92 m. A second lens of focal length -3.7 m is 0.62 m to the right of the first lens. Find the distance between the object and the final image formed by the second lens
A person is experiencing vertigo and disorientation, and is unable to stand upright. These symptoms were first experienced after a rapid pressure change. Where is the issue most likely to be found?
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