A stone is dropped at t = 0. A second stone, with 6 times the mass of the first, is dropped from the same point at t = 160 ms. (a) How far below the release point is the center of mass of the two stones at t = 300 ms? (Neither stone has yet reached the ground.) (b) How fast is the center of mass of the two-stone system moving at that time?

What is the magnitude of the change in its momentum : A 1870 kg truck traveling north at 37 km/h turns east and accelerates to 52 km/h. (a) What is the change in the truck's kinetic energy? (b) What is the magnitude of the change in its momentum? |

Magnitude of the larger of the two resistances : When a 42.0-V emf device is placed across two resistors in series, a current of 12.0 A is flowing in each of the resistors. When the same emf device is placed across the same two resistors in parallel, the current through the emf device is 62.0 A. Wh.. |

Two masses are connected by a string : Two masses are connected by a string which goes over an ideal pulley. Block A has a mass of 4.75kg and can slide along the smooth plane inclined by 37.0 degrees above the horizontal. The masses remain stationary. a) draw a free body diagram b) what m.. |

What is the resistance of the bulb-current in the bulb : A 100 W lightbulb is plugged into a standard 120 V outlet. How much does it cost per month (30 days) to leave the light turned on continuosly? Assume electrical energy costs 7.5/kWh. (Enter dollars with no unit) What is the resistance of the bulb? Wh.. |

How fast is the center of mass of the two-stone system : A stone is dropped at t = 0. A second stone, with 6 times the mass of the first, is dropped from the same point at t = 160 ms. (a) How far below the release point is the center of mass of the two stones at t = 300 ms? (Neither stone has yet reached t.. |

Whats the period of the resulting oscillations : A spring (k = 60.5 N/m) hangs vertically with its top end fixed. a mass attached to the bottom of the spring then displace it 0.225 m. establishing a new equilibrium. If the mass is further displaced and then released, what's the period of the result.. |

Work-energy theorem to find his speed at the top of the ramp : A physics professor is pushed up a ramp inclined upward at an angle 31.0 above the horizontal as he sits in his desk chair that slides on frictionless rollers. The combined mass of the professor and chair is 90.0 . He is pushed a distance 2.85along t.. |

Find the capacitance of the capacitor in nanofarads : A 18.0 k? resistor and a capacitor are connected in series and then a 12.0 V potential difference is suddenly applied across them. The potential difference across the capacitor rises to 8.76 V in 1.22 µs. (a) Calculate the time constant of the circui.. |

An infinitely long charged wire produces an electric field : An infinitely long charged wire produces an electric field of magnitude 1.17 103 N/C at a distance of 46.4 cm perpendicular to the wire. The direction of the electric field is toward the wire. (a) What is the charge distribution? (b) How many electro.. |

## Compute the mass of ice melted as a result of the frictionA block of ice at 0°C whose mass initially is m = 48.4 kg slides along a horizontal surface, starting at a speed vo = 4.91 m/s, Compute the mass of ice melted as a result of the friction between the block and the surface |

## Find the speed of the second observerA rod moving in the positive x direction is measured by a stationary observer to have a length of 10.0meters, Find the speed of the second observer as measured by the stationary observe |

## What is the position of man as a function of timeA man is running at speed c (much less than the speed of light) to catch a bus already at a stop. At t=0, while he is a distance b from the door to the bus, the bus starts moving with the positive acceleration a. |

## Calculate the length of the pendulumIf the pendulum makes a maximum angle of 5.4? with the vertical, what is the length of the pendulum |

## Find the force exerted by the rope on the bucketfind the force exerted by the rope on the bucket. A metallic object is given the negative charge by the process of induction. What happens to object's mass. |

## Compute the voltage between the surface and the axisCompute the voltage between the surface and the axis of a uniformly charged infinite cylinder of radius a |

## What is the pressiure at the filter openningthe abovegroundswimming pool of h=.95m has an external filter sitting on ground . the filter has an opening 2cm is diameter that connects to the pipe of 1cm diameter. what is the pressiure at the filter openning |

## Find the accelerating potential differenceIt's generally okay to ignore relativistic effects when a particle's speed is less than 1.0% of the speed of light, Find the accelerating potential difference that will bring electrons to that speed, starting from rest |

## Compute the nail under a microscopeStudents hypothesized that by running the electric current through the wire of the apparatus shown here, they could cause the non-magnetic nail to exhibit magnetic properties. What would be a reasonable way to test this. |

## What is the distance of the man from the pierWhat is the distance of the man from the pier after he walks to the front of the boat at a velocity of 3mph? Assume no friction between the boat and the water. |

## What is the average charge density on the positive plateA parallel plate capacitor has plates each of area 100 cm^2, what is the average charge density on the positive plate? |

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