Physics, 11.04.2021 08:00 Dragonskeld
We are designing a crude propulsion mechanism for a science fair demonstration. One of our team members stands on a skateboardthat has arigid“sail” attached. The other team members will throw object at the sail to propel the skateboard and rider. They have balls and globs of clay that are the same size and have the same mass. Will they have better results throwing the clay or the balls? Explain!
Answers: 3
Physics, 21.06.2019 19:30, nayashuntel
Asample of a gaseous substance changes into a liquid
Answers: 1
Physics, 22.06.2019 00:00, madskate9993
During physical science, ms. greene challenged her students to produce an energy transformation. james and jill wrapped a 4-inch nail with a coil of fifty turns of wire. they connected one end of the coil to one terminal of a knife switch. they connected the other terminal of the knife switch to the battery. finally, they connected the end of the coil to the other terminal of the battery. james held the tip of a 1-inch nail near the flat end of the 4-inch nail. jill closed the knife switch quickly and then opened it. the 1-inch nail was pulled toward the 4-inch nail. what is the best explanation of why the nail moved? a) electrical energy was converted to mechanical energy in the 1-inch nail. b) the 4-inch nail became an electromagnet and the magnetic force attracted the 1-inch nail. c) the electric current in the 4-inch nail was converted to mechanical energy in the 1-inch nail. d) the 4-inch nail had a positive charge and the 1-inch nail had a negative charge. opposites attracted.
Answers: 1
Physics, 22.06.2019 08:30, fernandoramirez086
Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.
Answers: 3
We are designing a crude propulsion mechanism for a science fair demonstration. One of our team memb...
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