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now you are playing with your bestfriends favorite toy, a ball on a string. the ball's mass is 3kg and the string is 1.1 m long. if the string breaks when its tension is above 85 N , how fast can you twirl the ball (in a horizontal surface) without breaking your best friends toy?
question1a commercial aircraft receives a homing radio signal with an intensity of 12 muwm2 when it is 11 km from the
At a horizontal distance of 45m from a tree, the angle of elevation to the top of the tree is 26 degrees. How tall is the tree
Assume a ray of light is incident on an air / material boundary at 45 degrees to the normal. What is the critical angle for the material when it is surrounded by air
A 0.38 kg iron horseshoe that is initially at 580°C is dropped into a bucket containing 21.8kg of water at 21 °C. What is the final equilibrium temperature (in °C)? Avoid any heat transfer to or from the surroundings. Do not enter units.
A 1500 microfarad capacitor and a 5600 microfarad capacitor are connected in parallel across a 12.0 V potential difference. Determine the total energy stored in the capacitors
Two capacitors, one 17.5 ?F and the other 12.2 ?F are connected in series across a 15 V battery. What is the charge stored on the 12.2 ?F capacitor
A 3000kg rocket and its 500 kg payload are traveling at a speed of 2000m/s. what is the velocity of the payload after separation
A +18 µc charge is 15 cm to the right of a -12 µc charge. What is the force on the positive charge
Water at a pressure of 3.00*10^5 Pa flows through a horizontal pipe at a speed of 1.00 m/s. The pipe narrows to one-fourth its original diameter
A sound wave is traveling in seawater, where the adiabatic bulk modulus and density are 2.3 109 Pa and 1025 kg/m3, respectively. What would be the beat frequency heard by an underwater swimmer
Comet Halley has an orbital period of about 75 years. Determine the average distance of Comet Halley from the sun in AU
A muon travels 60 km through the atmosphere at a speed of 0.9995c. According to the muon, how thick is the atmosphere
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