Physics, 31.07.2019 04:10 whocares1234
Aphysicist makes a cup of instant coffee and notices that, as the coffee cools, its level drops 3.00 mm in the glass cup. show that this decrease cannot be due to thermal contraction by calculating the decrease in millimeters in level if the 350 cm^3 of coffee is in a 5.00 cm diameter cup and decreases in temperature from 95°c to 44.0°c. (most of the drop in level is actually due to escaping bubbles of air.)
Answers: 3
Physics, 22.06.2019 05:30
James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the
Answers: 1
Physics, 22.06.2019 14:30
Multiply or divide to make this english distance conversion. 174 inches = feet (14.5, 58, 2,088, 23)
Answers: 2
Physics, 22.06.2019 17:30
Ethanol has a heat of vaporization of 38.56 kj/mol and a normal boiling point of 78.4 c. what is the vapor pressure of ethanol at 14 c?
Answers: 3
Physics, 22.06.2019 19:40
Currents in dc transmission lines can be 100 a or higher. some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. for a line that has current 150 a and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? express your answer in teslas and as a percentage of the earth’s magnetic field, which is 0.50 g. is this value cause for worry?
Answers: 1
Aphysicist makes a cup of instant coffee and notices that, as the coffee cools, its level drops 3.00...
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