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A 25 gram ball is released from rest 80 meter above the surface of the Earth. During the fall the total thermal energy of the ball and air increases by 15 Joule. Determine its speed just before it hits the surface?
Diffraction also occurs with sound waves, What isthe angle between the two first-order diffraction minima
A uniform 34.5-kg beam of length = 4.95 m is supported by a vertical rope located d = 1.20 m from its left end, Find the force that the column exerts on the right end of the beam
Consider a mass spectrometer used to separate the two isotopes of uranium, 238U3+ and 235U3+. Assume the ions enter the magneticfield region with a speed of 7.10*105 m/s. What value of B isrequired to give a separation of 1.2mm when the ions leave th..
the equation for the frequency f of oscillation of simple pendulum is f 12p vglwhere l is the length of the pendulum
If 61.4 cm of copper wire (resistivity = 1.69x 10-8Ω•m, diameter = 0.943 mm) is formed into a circular loop, find at what rate is thermal energy generated in the loop
Two bars of identical mass are at 30 °C. One is made from glass and the other from another substance. The specific heat capacity of glass is 840 J / (kg • C°).
Alpha Centauri is 4.3 light years away. If we could make a rocket that went 4/5 the speed of light: What would the travel time be for the astronauts
A solar water heater for domestic hot-water supply uses solar collecting panels with a collection efficiency of 47.0% in a location where the average solar-energy input is 200 W/m^2...... If the water comes into the house at 15.0C and is to be heated..
Arlene is to walk across a "high wire" strung horizontally betweentwo buildings 10.0m apart. what is the tension in the rope at this point
A charge of +1 coulombs is placed at the 0 cm mark of a meter stick. A charge of +4 coulombs is placed at the 100 cm mark of the similar meter stick.
an electron initially traveling in the x-direction with a speed of 4 x 105 ms enters a uniform electric field directed
The first-order principal maximum produced by a grating is located at an angle of ? = 11.6 degrees. What is the angle for the third-order maximum with the same light
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