A 5.00 kg chunk of ice is sliding at 13.0 m/s on the floor of an ice-covered valley when it collides with and sticks to another 5.00 kg chunk of ice that is initially at rest. Since the valley is icy, there is no friction. After the collision, how high above the valley floor will the combined chunks go? (Hint: Break this problem into two parts-the collision and the behavior after the collision-and apply the appropriate conservation law to each part/ Answer should be in meters.)

What are the first three energy levels of the electron : An electron is confined in a harmonic potential well that has a spring constant of 1.50 N/m. What are the first three energy levels of the electron |

Desired temperature increase has been achieved : You work in a materials testing lab and your boss tells you to increase the temperature of a sample by 34.9C . The only thermometer you can find at your workbench reads in degrees Fahrenheit. If the initial temperature of the sample is 75.0F, what.. |

Calculate the horizontal retarding force on the mower : A person pushes a 13.0 kg lawn mower at constant speed with a force of 74.0 N directed along the handle, which is at an angle of ? = 40.0° to the horizontal (Fig. 4-40).b.Calculate the horizontal retarding force on the mower |

Explain oxidation-reduction reactions : Identify which of the following reactions are acid-base reactions and which are oxidation-reduction reactions. a. For those which are redox reactions state which substance is oxidized and which is reduced. Be specific in your answers, for example .. |

Find how high above the valley floor will combined chunks go : A 5.00 kg chunk of ice is sliding at 13.0 m/s on the floor of an ice-covered valley when it collides with and sticks to another 5.00 kg chunk of ice that is initially at rest. how high above the valley floor will the combined chunks go |

Is the current leading or lagging behind the voltage : A resistor (R = 900 ?), a capacitor (C = 0.25 µF), and an inductor (L = 2.0 H) are connected in series across a 240 Hz AC source for which ?Vmax = 110 V. Calculate the following. (a) the impedance of the circuit (b) the maximum current delivered by t.. |

What is the spring constant of the potential well : An electron confined in a harmonic potential well emits a 1280nm photon as it undergoes a 5 ? 4 quantum jump. What is the spring constant of the potential well |

Monatomic ideal gas along processes : Consider the expansion of 60.0 moles of a monatomic ideal gas along processes 1 and 2 in the figure below. In process 1 the gas is heated at constant volume from an initial pressure of Pi = 95 kPa to a final pressure of Pf = 190 kPa. In process 2 .. |

What is the acceleration of two falling sky divers : What is the acceleration of two falling sky divers (mass 116.0 kg including parachute) when the upward force of air resistance is equal to one-fourth of their weight? n? |

## Determine the acceleration of the sledJone pulls her brother on a sled over a horizontal surface with force of 80N. The force is at an angle of 25 degree, determine the acceleration of the sled |

## How far would the ball fall verticallyOne of the fastest recorded pitches in major-league baseball, thrown by Tim Lincecum in 2009, how far would the ball fall vertically by the time it reached home plate, 60.5 ft away |

## Find the temperature of the ring at which it fits over barAn aluminum ring needs to be placed over a cylinder steel bar. At 10.00 degrees C, Find the temperature of the ring at which it fits over the bar |

## Find the maximum height the arrow will reachAn arrow is launched from a height of 1.21 m above the ground with an initial velocity of 48.3 m/s, What will be the maximum height the arrow will reach during its trajectory |

## Find the instantaneous power due to that forceAn initially stationary 2.7 kg object accelerates horizontally and uniformly to a speed of 16 m/s in 3.1 s. What is the instantaneous power due to that force at the end of the interval |

## Calculate the moment of inertia of the diskWhat is the moment of inertia of the disk for rotation about an axis through the edge of the disk |

## Determine the distance between nodesA tube of air is open at only one end and has a length of 1.29 m. What is the distance between one node and the adjacent anti-node |

## How many football fields does shuttle cover in blink of eyeThe Space Shuttle travels at a speed of about 7.60 103 m/s. The blink of an astronaut's eye lasts about 110 ms. How many football fields (length = 91.4 m) does the Shuttle cover in the blink of an eye? |

## What is the magnitude of the balls decelerationYour forehead can withstand a force of about 6.0kN before fracturing while your cheekbone can only withstand about 1.3 kN. what is the magnitude of the balls deceleration |

## What impulse was delivered to the sledA sled and rider, gliding over horizontal, frictionless ice at 4.5 , have a combined mass of 72. What impulse was delivered to the sled by the friction force from the rough spot |

## Assume that the trampoline obeys hooke''s lawHow long does it take for the grinding wheel to stop ? Through how many radians has the wheel turned during the interval found in. |

## Find the net work done on the crateA man pushing a crate of mass m = 92.0 kg at a speed of v = 0.860 m/s encounters a rough horizontal surface of length scripted l = 0.65 m, Find the net work done on the crate while it is on the rough surface |

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