Physics, 03.12.2021 05:10 saucyboyFredo
1. The planet Mars requires 2.47 years to orbit the sun, which has a mass of 1.989 × 10^30 kg, in an almost circular trajectory. Find the radius of the orbit of Mars as it circles the sun. The gravitational constant is 6.672 × 10−11 N · m2 /kg2 . Answer in units of m.
2. Find the orbital speed of Mars as it circles the
sun. Answer in units of m/s.
Answers: 2
Physics, 21.06.2019 19:40
Anne applies a force on a toy car and makes it move forward. what can be said about the forces acting on the toy car at the moment anne applies the force?
Answers: 1
Physics, 22.06.2019 00:00
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 12:30
An engine undergoes a cycle as shown in the diagram. during a complete cycle the work done by the gas is 28.5×103 j and the energy transferred thermally out is 99.4×103 j. there are 1.5×1024 gas molecules and they have three active degrees of freedom. 6. (6 pts) during which process(es) is energy transferred thermally into the gas? a. 1→2 b. 2→3 c. 4→1 d. 1→2 and 4→1 e. none of the above
Answers: 3
Physics, 22.06.2019 16:30
Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.
Answers: 1
1. The planet Mars requires 2.47 years to orbit the sun, which has a mass of 1.989 × 10^30 kg, in an...
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