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A 250 g Teddy Bear and a 5 kg baby stroller are nudged off a window sill and fall 5 meters to the ground. Determine the speeds and kinetic energies of both objects when they hit the ground.
An insulated Thermos contains 110cm3 of hot coffee at 90 °C. You put a 12g ice cube at its melting point to cool the coffee. By how many degrees has the coffee cooled once the ice has melted and equilibrium is reached? Care for the coffee as thoug..
A long straight wire carries a current of 6.2 A. The wire is horizontal in the plane of the page (screen) and the current is traveling to the left. Calculate the force that acts on the electron
The internal energy of a gas is 1000 J. The gas is compressed adiabatically, and its volume decreases by 500 cm3. what is the internal energy of the gas
Three solid spheres of lead, each of mass 9.8 kg, are located at three corners of a square with side lengths of 50 cm. determine the magnitude and direction of the acceleration of the smaller object when it is released
a crane is lifting a 500 kg payload straight up at a constant speed of 0.7 m/s. What is the power output of the crane
A wind turbine with a rotor diameter of 50 m is rated at Y kW at a hub height wind speed of m/s. It has a cut-in wind speed of m/s and a cut-out speed of m/s.
Draw a ray diagram depicting the following: and object is 20cm in front of a concave mirror whose radius of curvature is 25cm. Calculate the image position using the mirror equation
A .075 Kg toy rocket is launched straight up from the ground at 19 m/s. Calculate the power of gravity force during the first 10s
If a Joe pulls a 37-kg crate at a 0.62 m/s^2 using a horizontal strap, when 250N of friction acts on it, what is the Tension in the strap
the supersonic aircraft concorde has a length of 61.5m when sitting on th ground on a typical day when the temperature is 15.0 degrees C. what is the temperature of the concordes skin in flight
The impact on light fixture swing
A penny sits on a rotating disk that rotates once every 0.9 s. The coefficients of static and kinetic friction between the penny and disk are 0.58 and 0.48, respectively. For the penny to not slide, what is its largest distance from the center of the..
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