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A 65 {\rm kg} hiker climbs to the top ofa 450 {\rm m}-high hill.
Ignoring the energy required for horizontal motion and assuming atypical efficiency for energy utilize by the body, how many frozen burritos would be needed to fuel this climb? Suppose one burrito delivers 1470 kJ.
A 0.400-kg ball approaches a very massive wall at 20.0 m/s perpediculat to wall and rebounds with 70.0% of its inital kinetic energy. find the magnitude of the change in momentum of the wall
a ball is thrown upwards with an initial velocity of 10 ms. find the time for its maximum height and also find its
A fisherman notices that his boat is moving up and down periodically due to waves on the water. What is the velocity of the wave
Consider the concentric metal sphere and spherical shells. The innermost is a solid sphere that has a radius R1. A spherical shell surrounds the sphere and has an inner radius R2 and an outer radius R3.
Two ants race across a table 66 cm long. One travels at4.42 cm/s and the other at 3cm/s. When the first one crosses thefinish line, how far behind is the second one
Derive the 5 volt reference from a 5 volt source. Apply a 1 KHz sine wave. Vary the amplitude of the input voltage and sketch the input and output waveforms.
A uniform electric field of magnitude 395 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. What is the work done by the field on the electron
n lab tests on a 9.25cm cube of a certain material, a force of 1375N directed at 8.50degree to the cube, What is the shear modulus of the material
An object is placed at a distance of 28 cm from a thin convex lens. The lens has a focal length of 9 cm. what are the values of the image distance and lateral magnification
The average density of the planet Jupiter is 1327 kg/m3. The acceleration of gravity on its surface is 25.94 m/s2. Calculate the average radius of Jupiter
A bowling ball of mass 1 kg hits a spring with velocity 1 m/s. The spring constant is also 1 (how convenient!). What is the maximum compression of the spring in centimeters
A rocket is fired at a speed of 71.0 m/s from ground level, at anangle of 56.0 ° above the horizontal. The rocket is firedtoward an 20.6-m high wall, which is located 20.0 m away.
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