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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.
Consider two balls colliding in the absence of external forces. One ball has a mass of 5kg and the other of 7kg. Ball #1 had speeds of 1 m/s and 10 m/s before and after the collision which lasted 0.2 seconds. Compute the average (over time) of the co..
Consider a gas of neutrons in a nuclear reactor. The neutron density is 10^8 neutrons/cm^3 in an operating reactor which has a core temperature of 535K. Are the neutrons in the reactor core a classical gas or a quantum mechanical gas and how can y..
What is the net work Wnet done on the block by the two forces? Find the work W2 done by the force of magnitude F2 = 35.0N as the block moves from xi = -1.00cm to xf = 3.00cm .
Physics - Heisenberg Uncertainty Principle - Marble Drop (Q 1) Scenario: You are going to drop a marble with mass m from the top of a building of height H onto a small target below it. 1) Obtain an expression for the time it takes for the marble to f..
A proton is released such that it has an initial speed of 4.0 ? 105 m/s from left to right across the page, find the magnitude of the force experienced by the proton
An electron is projected vertically upward with a speed of 1.50 * 10^6 m/s into a uniform magnetic field of 0.200 T that is directed horizontally away from the observer. What is the radius of motion?
N bricks, each having height h and mass m, are lying on the floor in a configuration of minimal potential energy. Find the minimum energy required to put all bricks one on top of another
What is the minimum coefficient of static friction between the road and the tires on a car for the car to go around a flat curve at 45.0 mph
While moving down the track at 10.0 m/s, you uniformly accelerate to 27.0 m/s in 10 s. Illustrate what is the average net force that you have applied to the car during the 10 s interval?
Find an expression for the electric field as a function of r, the distance to the center of the spheres - find an expression for the electrostatic potential as a function of r.
Two 2.50-cm-diameter disks spaced 1.70mm apart form a parallel-plate capacitor. The electric field between the disks is 5.00×105V/m. What is the voltage across the capacitor
A 12-V battery causes a current of 0.80A through a resistor, How many joules of energy does the battery lose in a minute
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