A copper block is removed from a 300° C oven and dropped into 1.00 liter of water at 20° C. The water quickly reaches 25.5° C and stays at that temperature. What is the mass of the copper block?

Interferometer is used with helium-neon laser of wavelength : A michelson interferometer is used with a helium-neon laser of wavelength 628.8 nm. A glass-walled chamber of interior length 1.005 cm is placed in one of the beams and the position of the mirror is adjusted until bright light is observed at the dete.. |

Package falls completely vertically and sticks to the sled : A 6kg sled is traveling across the ice at a speed of 9m/s when a12kg package is dropped into it from above (assume the package falls completely vertically and sticks to the sled). What is the speed of the sled after this “collision”? |

What is the frequency of rotation and period of the rotation : A 100 gram bead is free to slide a long a piece of 0.8 m long string ABC. the ends of the string are attached to a vertical rod at point A and B, which are o.4m apart. when the rod is rotated, BC is Horizontal and equals to 0.3m. (a) what is the t.. |

What is the final pressure of the gas and final volume : 0.10 mol of argon gas is admitted to an evacuated 50 cm3 container at 20° C. The gas then undergoes isobaric heating to a temperature of 300° C. What is the final pressure of the gas? What is the final volume? |

What is the mass of the copper block : A copper block is removed from a 300° C oven and dropped into 1.00 liter of water at 20° C. The water quickly reaches 25.5° C and stays at that temperature. What is the mass of the copper block? |

A window washer is standing on a scaffold supported : A window washer is standing on a scaffold supported by a vertical rope at each end. The scaffold weighs 204 N and is 3.1 m long. What is the tension in each rope when the 702-N worker stands 2.10 m from one end? |

Calculate the coulomb potential energy of sphere with radius : Calculate the Coulomb potential energy of a sphere with radius R0, uniformly charged throughout its volume with the charge Ze. Hint: calculate the total energy associated with progressive addition of thin, charged spherical shells that constitute the.. |

Angular momentum-origin when the speed of each particle : A light, rigid rod of length l = 1.00 m joins two particles, with masses m1 = 4.00 kg and m2 = 3.00 kg, at its ends. The combination rotates in the xy plane about a pivot through the center of the rod (see figure below). Determine the angular momentu.. |

The distance from the center of breastbone to mans hand : The distance from the center of the breastbone to a man's hand, with the arm outstretched and horizontal to the floor, is 1.39 m. The man is holding a 12-kg dumbbell, oriented vertically, in his hand, with the arm horizontal. What is the torque due t.. |

## What is the final angular speed of the astronautsTwo astronauts, each having a mass M are connected by a length of rope of length d have a negligible mass. They are isolated in space, What is the final angular speed of the astronauts |

## Find the weight of this pyramid in poundsThe pyramid depicted in the figure contains approximately 2.20 million stone blocks that average 3.00 tons each. Find the weight of this pyramid in pounds. (Please provide numerical answer in lbs) |

## How long does the wave to deliver energy to the wallA gymnast with mass m1 = 40 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 110 kg and length L = 5 m. Each support is 1/3 of the way from each end. at first the gymnast stands at the left end of.. |

## Find the volume of each of the persons legsA person weighs 691 N in air but only 499 N when standing in water up to the hips. Find the volume of each of the person's legs |

## Find the average speed of the bugSuppose the velocity of a bug as a function of time is given by the following function between 0 and 2 s, Find the average speed of the bug for the whole two second trip |

## Compute the unknown wavelengthTwo parallel slits are illuminated by light composed of two wavelengths, one of which is 654 nm. What is the unknown wavelength |

## Estimate the total electric potential at the originTwo point charges are on the y-axis. A 5.0 µC charge is located at y = 1.05 cm, and a -2.42 µC charge is located at y = -1.30 cm. Find the total electric potential at the origin |

## What is the impulse applied to the ball by the collisionA bouncy ball of mass 81 g is thrown straight into a wall at the speed of 23 m/s. What is the impulse applied to the ball by the collision |

## Find how high above the ground will the ballJulie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 19.0 m/s at an angle 48.0 degrees; How high above the ground will the ball be when it gets to Julie |

## Find what is the mass of the watera cylinder has an inner radius of 3.50 cm and a height of 58 cm and is filled water. What is the volume of water and what is the mass of the water |

## What is the maximum magnitude of the electric fieldElectric charge is uniformly distributed inside a nonconducting sphere of radius 0.30 m. The electric field at a point , which is 0.50 m from the center of the sphere, is 15,000 N/C and is directed radially outward. What is the maximum magnitude o.. |

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