Recent content by GalacticSnipes

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    Bear sliding down tree with friction work check

    yes, should i have?
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    Bear sliding down tree with friction work check

    what does -ve stand for?
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    Bear sliding down tree with friction work check

    So...just check the numbers?
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    Bear sliding down tree with friction work check

    Homework Statement A 25 kg bear slides, from rest, 8 m down a lodgepole pine tree, moving with a speed of 6.4 m/s just before hitting the ground (a) What change occurs in the gravitational potential energy of the bear-Earth system during the slide? W = F*D W = (m*a)*D W = 1960 (b) What is the...
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    How does increasing the tension of a string affect various properties?

    This isn't really a homework question, just a question i got wrong on test and want to understand: If the tension of a string increases how would the following be affected (Increase, decrease, stay the same, not enough info)? 1. The fundamental frequency of vibrations on a string? 2. The...
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    Finding hill height for 35kg child on 5kg sled reaching 30 km/h

    ok, thx
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    Finding hill height for 35kg child on 5kg sled reaching 30 km/h

    would the whole formula be something like this: 0.5m(v)^2 = mgh?
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    Finding hill height for 35kg child on 5kg sled reaching 30 km/h

    I am familiar with COE and I think it has KE at the bottom of the hill...?
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    Finding hill height for 35kg child on 5kg sled reaching 30 km/h

    Homework Statement A 35-kg child goes down a hill on a 5-kg sled. Starting from rest, she reaches a speed of 30 km/h at the bottom of the hill. The hill makes an angle of 25 degrees with the horizontal. (a) Assuming there is no heat generated by friction and air resistance, how high is the...
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    Proton speed and kinetic energy after acceleration over 3.1 cm

    ok thx
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    How Much Power is Needed to Move an Elevator at 4.50 m/s?

    ok, thx
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    Proton speed and kinetic energy after acceleration over 3.1 cm

    So for (a) 2.7e7 m/s and for (b) 1.2e-13 J?
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    How Much Power is Needed to Move an Elevator at 4.50 m/s?

    But 282.240 kW is the non rounded answer?
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    How Much Power is Needed to Move an Elevator at 4.50 m/s?

    constant
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    How Much Power is Needed to Move an Elevator at 4.50 m/s?

    so the answer would be 6400*9.8*4.5 = 282240 Watts?
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