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A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of 80.2 m/s at ground level. The engines then fire, and the rocket accelerates upward at 3.80 m/s2 until it reaches an altitude of 1190 m. At that point its engines fail, and the rocket goes into free fall, with an acceleration of -9.80 m/s2.
Reluctant diver Dave is hanging by his fingertips at the high-dive board, a distance of 8m from the water. His friend pries his fingers from the board, How long does it take Dave to reach the water
Two sinusoidal waves traveling in opposite directions interfere to produce a standing wave with the wave function y = (2) sin(0.5x) cos(500t), Determine the wavelength of the interfering waves
The length of a beam increases by 1.26mm when its temperature is raised from 29.87oC to 71.49 oC. What is the length of the beam at the initial temperature
An electron is released from rest in a uniform electric field of magnitude 2.20 x 10^4 N/C. Calculate the acceleration of the electron
A proton and an electron have the same kinetic energy upon entering a region of constant magnetic field
To appreciate the strength of gravity, calculate the number of steel cables that would be required in the absence of gravity to hold the moon in orbit about the earth.
You desire to observe details of the Statue of Freedom, the sculpture by Thomas Crawford that is the crowning feature of the dome of the United States Capitol in Washington D.C. what focal length should the eyepiece have
In the deep ocean, a water wave with wavelength 95 m travels at 12 m/s. What will be the vertical position of the boat 5.0 s later
A hiker determines the length of a lake by listening for the echo of her shout reflected by a cliff at the far end of the lake. Determine the length of the lake
Considered frequency and draw the nodal maps
A gas expands from I to F. The energy added to the gas by heat is 418 J when the gas goes from I to F along the diagonal path. (a) What is the change in internal energy of gas? (b) How much energy must be added to the gas by heat for indirect path..
the four particles form a square of edge length a = 4.50 cm and have charges q1 = +25.0 nC, q2 = -50.0 nC, What net electric field do the particles produce at the square's center
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