A 0.2kg toy car rolls down ramp. If the car started from rest at a height of 0.30m, what is its speed at the bottom of the ramp? Incorrect: Your answer is incorrect. At the bottom, it hits another stationary car with equal mass. The two cars have Velcro and stick together. At what speed do the two cars move after the collision?

A uniform marble rolls down a symmetric bowl : A uniform marble rolls down a symmetric bowl, starting from rest at the top of the left side. The top of each side is a distance { h} above the bottom of the bowl. |

When a single high-resistance bulb is connected : When a single high-resistance (long) bulb is connected to a 1.5 volt battery, the current through the battery is about 80 milliampere. If you add another high-resistance (long) bulb in parallel, the battery current of course increases to 160 milliamp.. |

What is its rotational speed in revolutions per minute : At what depth under water does the pressure increase by 100,000 Pa? The Earth rotates with a period of one day. What is its rotational speed in revolutions per minute? The Earth rotates with a period of one day. What is its rotational speed in revolu.. |

What is the tension force in each cable : A 1000N beam is loaded with a 2000N filing cabinet and supported by two cables. If the beam is 8 meters long and the filing cabinet is 2 meters from the left cable, what is the tension force in each cable? total of both tension? tension in left cable.. |

What speed do the two cars move after the collision : A 0.2kg toy car rolls down ramp. If the car started from rest at a height of 0.30m, what is its speed at the bottom of the ramp? Incorrect: Your answer is incorrect. At the bottom, it hits another stationary car with equal mass. The two cars have Vel.. |

One string of a certain musical instrumen : One string of a certain musical instrument is 72.0 cm long and has a mass of 8.76 g . It is being played in a room where the speed of sound is 344 m/s . a) To what tension must you adjust the string so that, when vibrating in its second overtone, .. |

Lightbulb is plugged into standard-resistance of 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.. |

Calculate the current and calculate the current density : A potential difference of 4.80 V will be applied to a 43.00 m length of 18-gauge copper wire (diameter = 0.0400inches). Calculate the current. Calculate the current density. Calculate the electric field. Calculate the rate at which thermal energy wil.. |

A nichrome heater dissipates : A Nichrome heater dissipates 450 W when the applied potential difference is 110 V and the wire temperature is 700°C. What would be the dissipation rate if the wire temperature were held at 200°C by immersing the wire in a bath of cooking oil? The app.. |

## What percentage of the original energy is lostA power line 50km long has a total resistance of 0.60ohm, What percentage of the original energy is lost when the transformer is not used |

## Determine the period of the exoplanet in daysAn exoplanet of mass 7.4e26 kg orbits its parent star at an angle of inclination of 28.9 degrees. determine the period of the exoplanet in days |

## Determine the electric field magnitude e for rConsider a thick spherical shell with total charge Q, inner radius R(i), and outer raduis R(o). Within the shell, charge is not distributed uniformly: the volume charge density p(r) is proportional to r^-2. |

## Calculate the acceleration of boxes and the tension in rodA box of ant aunts m1 = 1.65kg and a box of ant uncles m2 = 3.30kg, slide down an inclined plane while attached by a massless rod parallel to the plane. The angle of the incline is zeta = 30 degree. The cefficient of the kinetic friction between the .. |

## Classical mechanicsStarting with the left-most column, populate the boxes from left to right without skipping empty boxes. Ties should be grouped in the same box |

## How much power does this force deliver to the objectA 20-N horizontal force pushes an object along a rough floor so that the object moves with a constant velocity of 7.0 m/s |

## Determine the linear speed of the ballTo reach the rack, the ball rolls up a ramp that rises through a vertical distance of h = 0.547 m. What is the linear speed of the ball when it reaches the top of the ramp |

## Obtain the inertia of the wheelA light rope is wrapped several times around a large wheel with a radius of .4 m. The wheel rotates in frictionless bearings about a stationary horizontal axis. Calculate the inertia of the wheel |

## Find what is the density of the liquida 30-cm tall (height) ad 4.0 in diameter plastic tube has a sealed bottom. The mass of the tube if 30.0g. What is the density of the liquid |

## What is the tension in the left ropeTwo ropes are pulling upward on a large crate. The weight of the crate is 350. N. The tension in the left rope is the same as the tension in the right rope. what is the tension in the left rope |

## What is the quality factor of the circuitA coil with internal resistance can be modeled as a resistor and an ideal inductor in series. Assume that the coil has an internal resistance of 1.60 ?, What is the quality factor of the circuit |

## How high will the ball riseA ballplayer standing at homeplate hits a baseball that is caught by another player at the same height above the ground from which it was hit. The ball is hit with an initial velocity of 21 m/s at an angle of 54° above horizontal. |

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