Physics Weekly Blog

  • Forces 1 and 2 quiz

    Posted by Craig Messerman on 10/13/2019

    FOR#1: 

    a. Name the instrument, measurement, and explain how the measurement is or is not valid:

    elecbal

    b. Repeat for this:

    scaleNewtons

    FOR#2:

    a. Explain how to measure mass in zero g.

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  • LM 4 and 5 quiz

    Posted by Craig Messerman on 9/16/2019
     
    • LM4

      a. Calculate the velocity of a runner who runs 100 meters in 11.00 seconds, on our track.

      b. How long does it take to drive 50.0 km at a speed of 90.0 km/hr?

      LM5

      a. Calculate the acceleration of a rocket that reaches Mach 1 (341 m/s) in 5.0 seconds.

      b. What speed will be reached by a car accelerating from rest at 3.50 m/s^2 for 15.0 seconds?

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  • WSL 12, 13, 14 quiz

    Posted by Craig Messerman on 5/31/2019

    WSL 12:

    a. Use at least two rays to construct the virtual image you see of yourself in a flat mirror. Remember it is upright and the same size as the object (you!)

    b. Construct the virtual image of an object seen through a double-concave lens. (Hint: it will be smaller and upright. Extra hint: double concave lenses have a virtual focal point!).

     

    WSL 13:

    a. What is the speed of sound if an echo takes 0.292 seconds to come back from a wall 5.0 meters away?

     

    WSL 14:

    a. Draw and calculate the frequency of a tone for which the first harmonic resonates in a tube (closed at one end) 45.0 cm long. (Assume 344 m/s speed)

    b. If a 1.50 meter long bass string creates a 50.0 Hz fundamental tone, what is the speed of the waves traveling through the string?

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  • WEM TEST!!!!

    Posted by Craig Messerman on 4/1/2019
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  • WEM 10 Quiz

    Posted by Craig Messerman on 3/11/2019

    WEM 9/10 Quiz:

    You push a 10 kg box along a sheet of ice (assume friction is negligible) for 7.5 meters with a force of 18.5 N.

    a. (WEM 9) How much work was done on the box?

    b. (WEM 10) What was the final velocity of the box after you stopped pushing?

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  • WEM 1 and 2 Quiz

    Posted by Craig Messerman on 2/5/2019

    WEM quiz

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  • catapult quiz

    Posted by Craig Messerman on 1/9/2019

    2D#6:

    Calculate Vi for a catapult that flies 5.0 meters and reaches a height of 2.0 meters.

    2D#7:

    Why is 45 degrees the optimum angle for projectile distance?

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  • Forces TEST!!!!

    Posted by Craig Messerman on 11/26/2018

    Test is Wednesday, November 28

    Here are some old review notes, not in quite the same order as our targets.Forces Notes

    Component Forces

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  • FOR5 Quiz

    Posted by Craig Messerman on 11/13/2018

    a. Show with a labelled free-body diagram the forces acting on this 60.0 kg skier (weight, force parallel to slope, force normal to slope)

    b. Calculate her acceleration.skier on 50 degree slope

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  • FOR 4 and 7 quiz

    Posted by Craig Messerman on 10/29/2018

    Forces 4, 7, 9 Quiz: 

    a. Draw a scaled free-body diagram for a moving car of mass 2000.0 kg if it is accelerating at 2.00 m/s^2. There are 50.0 Newtons of air friction acting on the car.

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