Physics Weekly Blog

  • 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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  • FOR 1 and 2 Quiz

    Posted by Craig Messerman on 10/25/2018

    FOR1:

    a. What is the difference between mass and weight?

    b. How are mass and weight measured?

    FOR2/3: How does an inertial balance depend on Newton's First and Second Laws to operate?

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  • LM 6, 7 quiz

    Posted by Craig Messerman on 9/25/2018

    LM6:

    (Distance=12.0 m, Displacement=3.0 m, t=11.0s)

    Image result for displacement physics

    a. Calculate the average speed and average velocity for an object that takes this path.

    b. Did the object accelerate during it's trip? Why or why not.

    LM7:

    a. Calculate the final velocity of a cart that rolls from rest down a ramp at 3.50 m/s^2 for 2.50 seconds.

    b. Use one of the equations from the bottom of your target list to find the velocity of a ball that freefalls from rest and travels 10.0 m downward.

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