# AP (Advanced Placement) Physics(B-C): Questions 643 - 647 of 921

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## Question number: 643

### Question

In a double slit experiment, the wavelength of light is , the distance between the two slits is , and the distance from the slit to the screen is . What is the distance between adjacent dark spots in a double slits diffraction pattern?

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e. | All of the above |

## Question number: 644

### Question

One step in the radioactive decay series of uranium-235 to lead-207 is the decay of bismuth-215. In this step, what is produced when gives off an alpha particle and a beta particle?

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e. | None of the above |

## Question number: 645

» Magnetic Field & Electromagnetism

### Question

Consider the following figure. If the value of is equal to , then what is the magnitude of net magnetic field at point ?

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e. | All of the above |

## Question number: 646

» Force and Newton's Law of Motion

### Question

A force of is applied for to an moving object of mass . If the initial speed (before applying force) of object is , then what will be the final speed (after applying force)?

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e. | None of the above |

## Question number: 647

### Question

A bicycle rider of mass of exerted all his weight on pedal. If the distance between bicycle pedal and its axle is about , then what is the approximate torque applied at the point where the pedal is farthest forward and horizontal?

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e. | All of the above |