physics

A flywheel has a small magnet mounted on it. EAch time the magnet passes the coil, a voltage pulse is generated, which is passed to the c.r.o. The display of the c.r.o. is 10cm wide. The flywheel is rotating at a rate of about 3000 revolutions per minute.Why will the time base setting 10ms?cm dispaly clearly separate pulses on the screen?

  1. 👍
  2. 👎
  3. 👁
  1. Rotation is 3000 rev per min.
    F=1/T or T=1/F
    F is measured in rev per second.
    F=3000/60=50
    T=1/50=0.02s
    S to MS is x1000 so 0.02s => 20ms
    Hence, it is appropriate to use 10ms/cm for a clear display of pulse.

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Science

    An electromagnet is the most powerful type of magnet there is . It is a magnet with a current running through it that can be turned on and off , Why might it be useful to be able to turn the electromagnet on and off ? To control

  2. Science 7B

    An electromagnet is the most powerful type of magnet there is. It is a magnet with a current running through it that can be turned on and off. Why might it be useful to be able to turn the electromagnet on and off?(1 point) to

  3. physics question

    I have a question about a problem regarding Newton's third law. a. An iron rod is held up by a magnet. The magnet is held up by a string (from a ceiling, let's say). Draw a free-body diagram for the magnet and a separate free-body

  4. College physics

    According to Newton's Third Law, for every action there is an equal an opposite reaction. If the current on the wire is such so that the magnetic force on the wire points upward, what must be true? 1. There is no force on the

  1. physics

    A large bar magnet (mass of 0.4 kg) exerts a 5 N force on a small bar magnet (mass of 0.1 kg) located 20 cm away. Calculate the force exerted by the small bar magnet on the large one.

  2. physics- answers check

    1. For a bar magnet, the magnetic field lines point a. towards the South pole. b. towards the North pole. c. always towards the magnet. d. always away from the magnet. my answer: a 2. Magnetic field lines a. are straight lines. b.

  3. Physics

    Moving a magnet back and forth inside a coil of wire induces a current. How does the speed of the motion affect the magnitude of the current? Can someone please help me with this?? It would be much appreciate!! (=

  4. physics

    A 5 kg magnet exerts a constant force of 3 N on a 0.25 kg magnet. What force will the smaller magnet exert on the larger magnet?

  1. Physics

    Faraday's law: If the number of loops in a coil around a moving magnet doubles what happens to the brightness of the bulb if the speed of the magnet remains the same?

  2. Physics

    A 5 kg magnet exerts a constant force of 3 N on a 0.25 kg magnet. 1) What force will the smaller magnet exert on the larger magnet? Please show step by step including the right equations for this problem

  3. Science

    A magnet was placed near a pile that contained both iron and sulfur. The magnet was moved gradually closer to the pile. As it neared the pile, the magnet started attracting small pieces of iron from the pile. What best describes?

  4. college physics

    small one-cylinder gasoline engines sometimes use a device called a magneto to supply current to the spark plug. A permanent magnet is attached to the flywheel, and a stationary coil is mounted adjacent to it. Explain how this

You can view more similar questions or ask a new question.