Students often face hard-to-solve and mind-numbing **physics problems**, that cause a lot of distress into the studying process. Not everyone can cope with the hardships physics problems cause, and many end up with a bunch of **physics questions** that need to be solved. Our service is the solution provider for your physics questions. Ask your question here and get physics answers that would help you do your assignment in the quickest way possible with maximum results. Our experts will gladly provide **physics answers** for your benefit.

### Ask Your question

### Search & Filtering

A particle of mass m moves with constant speed v on a circular path of radius r . Find magnitude of average force on it in half revolution.

In Progress... |

suggest three methods that can be used to demagnetise the bar.

In Progress... |

A person walks 29 m East and then walks 38 m at an angle 45◦ North of East.

What is the magnitude of the total displacement?

What is the magnitude of the total displacement?

In Progress... |

A quart container of ice cream is to be made in the form of a cube. What should be the length of a side, in centimeters? (use conversion 1 gallon= 3.786 liters)

In Progress... |

A light string passing over a smooth light pulley connects two blocks of masses m1 and m2 .if the acceleration of the system is g/8, then find the ratio of their masses.

In Progress... |

two ball beraing of mass m each in opp. direction withe outh equal speed v collide head on with each other . peridict the outcomeof the collision assuming it to be perfectly elastic?

In Progress... |

A truck cover a distance of 360 km in 5 hours . Find its speed in meter per second.

In Progress... |

To get maximum current in a resistance of 3 Ω one can use n rows of m cells connected in parallel. If

the total no. of cells is 24 and the internal resistance of a cell is 0.5 then

(a) m= 12, n= 2 (b) m= 8, n= 4 (c) m= 2, n= 12 (d) m= 6, n= 4

the total no. of cells is 24 and the internal resistance of a cell is 0.5 then

(a) m= 12, n= 2 (b) m= 8, n= 4 (c) m= 2, n= 12 (d) m= 6, n= 4

Answered! |

With the circuit description from the reference to the chapter 13 (page 1179-1182) in [Adel S. Sedra, and Kenneth C. Smith, Microelectronic Circuits, Oxford University Press, 5th Ed. 2004],

1) Calculate the DC bias voltages at the collector, emitter, and base of the BC547.

2) Calculate suitable values of Cx to give open-loop gain A (beta) =1.2 at 1.15 MHz i.e. a 20% gain margin to ensure oscillation. Remember to take into account the effect of the capacitive loading of the CRO probe and CRO in your calculations (adds approx. 100 pF to the value of C2 in the circuit.).

1) Calculate the DC bias voltages at the collector, emitter, and base of the BC547.

2) Calculate suitable values of Cx to give open-loop gain A (beta) =1.2 at 1.15 MHz i.e. a 20% gain margin to ensure oscillation. Remember to take into account the effect of the capacitive loading of the CRO probe and CRO in your calculations (adds approx. 100 pF to the value of C2 in the circuit.).

In Progress... |

A player is about to drive into the rim but at a distance of 10ft a defender came his way. So he decided to take a fade away jump shot having a jumping velocity of 11ft/s at 50degrees to the horizontal. He will be releasing the ball at the highest point of his jump; he also leaned back at an angle of 40degrees to the vertical to further himself from the defender. If the player's shooting height is 6ft and takes his shot at 40degrees to the horizontal, how much initial velocity must he exert unto the ball if the hoop is 10ft high from the floor?

Answered! |