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Q. A pendulum of length 4.50 m is held out to point A. At the vertical position, an overhang effectively cuts the length of the pendulum by an amount equal to 4.00 m. (That is, 4.0 m is no longer free to swing.) How long does this pendulum take for one oscillation? Presume that all displacement angles are small.
A freight train has a mass of 2 multiplied by 107-kg. If the locomotive can exert a constant pull of 12.50 multiplied by 105-N, how long would it take to enhancement the speed of the train from rest to 85.00 km/h.
What is t he steam-side coefficient
find the angular speed after the grindstone. what must be its minimum mass so that material on its surface remains in place during the rapid rotation.
A dolphin in seawater at a temperature of 25 °C makes a chirp. How much time passes before it hears an echo from the bottom of the ocean, 208 m below.
A particular guitar string is supposed to vibrate at 214 Hz, but it is measured to actually vibrate at 272 Hz. By what percentage must the tension in string be changed to get the frequency to the accurate value.
A beam of 6 MeV electrons passes through a 400 micro-meter thick silicon detector. Estimate the energy lost by the electrons when crossing 200 micro-meters, 300 micro-meters and the full thickness of the detector.
What mass (in grams) of steam at 100 °C must be mixed with 287g of ice at its melting point, in a thermally insulated container, to produce liquid water at 65°C? The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg, an..
An airplane is flying horizontally with a speed of 1000 km/h(280m/s) when an engine falls off. avoid air resistance,assume it takes 30s for the engine to hit the ground.
An 825-N sled is pulled a distance of 161 m. The task requires 1.50 ^ 10^4 J of work and is done by pulling on a rope with a force of 137 N. At what angle is the rope held.
An archer shoots an arrow horizontally at a target 12 m away. The arrow is aimed directly at the center of the target, but it hits 56 cm lower. What was the initial speed of the arrow.
Establish the Force required to raise a 25.50 kg object by 2 pulleys, the diameter of larger circular pulley is 12.0 cm and the smaller pulley is 8.5 cm.
The pilot of an aircraft wishes to fly due west in a 33.10 km/h wind blowing toward the south. The speed of the aircraft in the absence of a wind is 190 km/h what must its speed relative to the ground be.
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