A converging lens with a focal length of 17.9 cm and a diverging lens are placed 26.0 cm apart, with the converging lens on the left. A 2.00-cm high object is placed 22.0 cm to the left of the converging lens. The final image is 34.0 cm to the left of the converging lens. What is the focal length of the diverging lens? What is the height of the final image?

Determine what is the theoretical maximum efficiency : Converting sunlight to electricity with solar cells has an efficiency of 15%. It's possible to achieve a higher efficiency (though currently at higher cost) by using concentrated sunlight as the hot reservoir of a heat engine. What is the theoreti.. |

Explain what is oxidation-reduction reaction : What is oxidation-reduction reaction. Balance the reaction between potassium permanganate with oxalic acid in the presence of excess sulfuric acid. What is normality. What is the normality of 1M H2SO4 solution. |

Evaluate the concentration of each substance : Calculate the concentration of each substance when mixing 40.0 mL of 0.1 M CH3COOH and 10.0 mL of 0.1 M CH3COONa |

Compute the magnitude of the force of friction : Suppose a slide similar to Der Stuka is 38.8 meters high, but is a straight slope, inclined at 45° with respect to the horizontal. Find the magnitude of the force of friction |

Compute what is the height of the final image : A converging lens with a focal length of 17.9 cm and a diverging lens are placed 26.0 cm apart, with the converging lens on the left. What is the height of the final image |

Evaluate the heat released and delta h of vaporization : Calculate the heat released when 72.0g of steam at 131C is converted to water at 44.0C. Assume that the specific heat of water is 4.184J/gC, the specific heat of steam is 1.99J/gC and delta H of vaporization is 40.79kJ/mol for water. |

Average force of contact between the club and the ball : A professional golfer is examining a video of a practice swing. The high-speed footage shows that his club is in contact with the ball (which was initially at rest on the tee) for only 0.471 milliseconds, and the radar gun clocks the speed of the .. |

Determine how far will the boat move : Two people, one of mass 75 and the other of mass 65 , sit in a rowboat of mass 89. How far will the boat move |

A wheel is rotating about an axis : A wheel is rotating about an axis that is in the z-direction. The angular velocity is at , increases linearly with time and is at . We have taken counterclockwise rotation to be positive. |

## Calculate the maximum angular speedIn a cement mixer, cement, gravel and water are mixed by tumbling in a slowly rotating drum. Calculate the maximum angular speed for which the materials will mix |

## What is the angle of incidenceYou are listening a soft music with a sound level of 50 dB. A subway train passes by whose sound level is 90 dB. What is total intensity level of the combined sound in dB. |

## Obtain the heading of the plane with respect to the groundYou are on an airplane traveling 30° south of due west at 100.0 m/s with respect to the air. What is the heading of the plane with respect to the ground |

## Evaluate the tension in the support cableA sign weighing 486 N is suspended at the end of a uniform rod 3.19 m long weighing 565 N. What is the tension in the support cable if it makes an angle of 33.0 deg with the support rod |

## How thick is them glassAn elevator cable can withstand a maximum tension of 19,500N before breaking. The elevator has a mass of 480 kg and a maximum acceleration of 2.24 m/s2. Engineering safety standards require that the cable tension never exceed two-thirds of the breaki.. |

## How far below the top of the well is the surface of waterdrop a rock into a well. You hear the splash 2.40 s after you release the rock from rest. How far below the top of the well is the surface of the water |

## Find the total time of flight until the ball hits the groundA ball is thrown off the top of a building with a velocity v at an angle ? with respect to the horizontal. Find the total time of flight until the ball hits the ground |

## Find the impedance of the given combinationAn RL series circuit has R = 72.0? and L = 2.20mH . The series combination is connected across a 155V (rms), 58Hz power supply. Find the impedance of the RL combination |

## Determine the position and speed of the bodyA body is dropped from rest and falls freely. Determine the position and speed of the body after 1.0, 2.0, 3.0 and 4.0 s have elapsed |

## Find the distance between deersThree deer, A, B, and C, are grazing in a field. Deer B is located 63.4 m from deer A at an angle of 53.0 ° north of west. What is the distance between deer A and C |

## What is the direction of the force on the protonTwo objects attract each other gravitationally with a force of 2.5 x10-10 N while they are 0.33 m apart. Their total mass is 4-kg. Find out their individual masses. |

## Find out the velocity with which the camera hits the groundA robot probe drops a camera off the rim of a 239m high cliff on Mars, where the free fall acceleration is -3.7m/s^2. Find out the velocity with which the camera hits the ground. |

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