A pitcher throws a curveball that reaches the catcher in 0.61 s. The ball curves because it is spinning at an average angular velocity of 370 rev/min (assumed constant) on its way to the catcher's mitt. What is the angular displacement of the baseball (in radians) as it travels from the pitcher to the catcher?

Explain by how much does the potential energy increase : Explain by how much does the potential energy of a 23.0-kg child increase when the child climbs a normal staircase to the second floor? |

Information about global finance : What are some implications of currency depreciation, devaluation, and appreciation for the US Dollar compared to a foreign currency? How does a strong U.S. dollar affect the balance of trade for USA? Why? |

Calculate the final molarity of the solution : calculate the final molarity of the solution that results when 125 ml of .200 M HCL is diluted to 1.00L |

What proportion of packets of soap powder are underweight : The actual weight of soap powder in a box has a normal distribution with a mean of 33 oz. and a standard deviation of 0.8 oz. What proportion of packets are underweight. |

Illustrate what is the angular displacement of the baseball : The ball curves because it is spinning at an average angular velocity of 370 rev/min (assumed constant) on its way to the catcher's mitt. Illustrate what is the angular displacement of the baseball (in radians) as it travels from the pitcher to t.. |

Which statement is the most correct regarding transcription : Which statement is the most correct regarding transcription/translation? |

Cross rate between pound and yen : Suppose the pound trades for 13.0840 pesos and the guilder trades for 4.5070 pesos or 65.4090 yen. What is the cross rate between the pound and the yen, that is, how many pounds will the yen buy? |

Find the resulting ph : 400 ml of .50 M HNO3 is added to 200 ml of water. if 100% dissociation occurs, find the resulting pH. |

Determine the upward force on an airplane wing : determine the upward force on an airplane's wing if the average flow speed of air is 192 m/s above the wing and 164 m/s below the wing. The density of the air is 1.5 kg/m3 and the area of each wing surface is 26 m2. |

## What is the stopping distance of the carWhat is the stopping distance of the car, as measured from the point where the driver first notices the red light? |

## Establish tension in the ropeAn adult exerts a horizontal force on a sewing that is suspended by a rope of length L, holding it at an angle x with the vertical. The child in the swing has a weight W and dimensions that are negligible compared to L. |

## What is the amplitude of oscillationA damped mass-spring system oscillates at 280 Hz. The time constant of the system is 2.0 s. At t = 0, the amplitude of oscillation is 8.4 cm and the energy of the oscillating system is then 84 J. |

## Select all the valid statementsSelect ALL the valid statements, i.e., B, AC, BCD. If an equation is dimensionally A) correct, the equation may be correct. B) incorrect, the equation may be correct. C) correct, the equation may be wrong. D) incorrect, the equation must be wrong... |

## How much work is completed on gasWhat is the time constant of a 9.50 thick membrane surrounding a 4.0×10-2 diameter spherical cell? Suppose the resistivity of the cell membrane as and the dielectric constant is approximately 9.00. |

## Find the phase constant of waveTwo sinusoidal waves of the same period, with amplitudes of 5.0 and 6.5 mm, travel in the same direction along a stretched string; they produce a resultant wave with an amplitude of 10.036 mm. The phase constant of the 5.0 mm wave is 0. What is th.. |

## What is the speed of the first marbleA 50g marble moving at 2.2m/s strikes a 30g marble at rest. Assume the collision is perfectly elastic and the marbles collide head-on. A.What is the speed of the first marble immediately after the collision? B.What is the speed of the second marbl.. |

## How many longitudinal modes would initially contributeIf a parallel mirror He-Ne laser had a homogeneous line shape with v=1.5GHz, and small signal peak coefficient of .001/cm length=100cm and reflectance's 100 percent and 97 percent, how many longitudinal modes would initially contribute to the laser o.. |

## The magnitude of the magnetic field at the center of squareFind the total number of lines in a 2.90 wide diffraction grating whose third-order spectrum has the 640 hydrogen- spectral line at an angular position of 39.0. |

## Discuss the imaging properties of composite lensA 20x telescope has a 12-cm diameter objective lens. What minimum diameter should the eyepiece lens have to collect all the light rays from an on axis distant source. |

## Explain how does this change in amplitude affect the waveWinds pick up suddently,increasing the wave's amplitude to 6m. Explain how does this change in amplitude affect the wave's frequency and the amount of energy it transports? |

## What would be the minimum coefficient of frictionA tuning fork with a frequency of 356 Hz is found to cause resonance in a closed column of air at 41 cm and at 65 cm. Find the velocity of sound produced by the tuning fork. |

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