A container has a large cylindrical lower part with a long thin cylindrical neck. The lower part of the container holds 12.5 m3 of water and the surface area of the bottom of the container is 4.64 m2. The height of the lower part of the container is h1 = 3.40 m and the neck contains a column of water h2 = 8.90 m high. The total volume of the column of water in the neck is 0.200 m3. What is the magnitude of the force exerted by the water on the bottom of the container?

Create artificial gravity in a space station is to spin it : Artificial gravity. One way to create artificial gravity in a space station is to spin it. If a cylindrical space station 275 m in diameter is to spin about its central axis, at how many revolutions per minute (rpm) must it turn so that the outermost.. |

Communications satellites are used to bounce radio waves : Communications satellites are used to bounce radio waves from the earth's surface to send messages around the curvature of the earth. In order to be available all the time, they must remain above the same point on the earth's surface and must move.. |

Neutron stars such as the one at the center of crab nebula : Neutron stars, such as the one at the center of the Crab Nebula, have about the same mass as our sun, but a much smaller diameter. If you weigh 670 N on the earth, what would you weigh on the surface of a neutron star that has the same mass as our su.. |

What is the mass of the planet in kilograms : Your spaceship lands on an unknown planet. To determine the characteristics of this planet, you drop a 1.20 kg wrench from 5.00 m above the ground and measure that it hits the ground 0.811 s later. You also do enough surveying to determine that the c.. |

Force exerted by the water on the bottom of the container : A container has a large cylindrical lower part with a long thin cylindrical neck. The lower part of the container holds 12.5 m3 of water and the surface area of the bottom of the container is 4.64 m2. The height of the lower part of the container is .. |

Find the drag force on the sled : A 100 kg sled is slid across a smooth ice field by a group of four dogs tied to the sled pulling with a 350 N force along a rope at an angle of 20 degrees above the horizontal. (a) If the sled travels at a constant speed, find the drag force on the s.. |

Find the capacitance of the second capacitor : A capacitor is connected across the terminals of an ac generator that has a frenquency of 460 Hz and supplies a voltage of 24 V. When a second capacitor is connected in parallel with the first one, the current from the generator increases by 0.18 A. .. |

Find the net external force acting on the system : A system consists of two particles. At = 0 one particle is at the origin; the other, which has a mass of 0.50 , is on the -axis at = 6.0. At = 0 the center of mass of the system is on the -axis at = 2.4. The velocity of the center of mass is given.. |

What is the voltage of an alternator that produces a current : What is the voltage of an alternator that produces a current of 0.039 A if it contains a series RCL circuit with a resistance of 300 ohm, an inductive reactance of 650 ohm and a capacitive reactance of 420 ohm? |

## Determine the speed of rocket alphaAs observed from Earth, rocket Alpha moves with speed 0.814c and rocket Bravo travels with a speed of 0.638c. What is the speed of rocket Alpha |

## Compute the angular velocity of the weather vaneA weather vane initially at rest has a moment of inertia of 0.122 kg · m2 about its axis of rotation, Find the angular velocity of the weather vane just after it is struck |

## As two trains move along a track their conductors suddenlyas two trains move along a track their conductors suddenly notice that they are headed toward each other. the figure |

## What is the resonance angular frequency of this circuitA parallel-plate capacitor having square plates 4.50cm on each side and 8.00mm apart is placed in series with an ac source of angular frequency 620rad/s, What is the resonance angular frequency of this circuit |

## What is the magnitude of the trucks velocityRelative to the ground, a car has a velocity of 16.8 m/s, directed due north, What is the magnitude of the truck's velocity relative to the ground |

## What will be the speed of the objectSuppose an object starts from rest and the falls with a constant acceleration of 5 mph/s. What will be the speed of the object |

## Calculate the separation between the lensesA coin is located 27.9 cm to the left of a converging lens (f = 20.0 cm). A second, identical lens is placed to the right of the first lens, Find the separation between the lenses |

## Estimate the tangential speed of the pointA wheel rotates with a constant angular velocity of 2.00 rad/s. Find the tangential speed of the point, and compute its radial acceleration from the relation |

## What is the combined magnetic fieldPhysicists model a magnetic field by assigning to every point in space a vector that represents the strength and direction of the field at that point, What is the combined magnetic field at this point |

## Compute the magnitude of the charge on each sphereTwo small metallic spheres, each of mass m = 0.40 g, are suspended as pendulums by light strings from a common point, what is the magnitude of the charge on each sphere |

## Indexes of refraction of this glass for colours of lightAn object with a net charge of 44 µC is placed in a uniform electric ?eld of 554 N/C, directed vertically. The acceleration of gravity is 9.81 m/s^2. What is the mass of this object if it ?oats in this electric ?eld? |

## Investigate ohms law for reverse currents in resistorsInvestigate Ohm’s law for reverse currents in resistors. Turn off the power supply and reverse the connections on the power supply. Turn the power supply back on and take data from 5.0 V to 0 V. Do not stop data collection. |

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