What approximations or simplifying assumptions must you make in these calculations? (note: some of these choices are false because they are wrong physics! ) entry field with incorrect answer treat mars as though it were spherically symmetric. ignore the effects of the sun, which alters the gravitational force that one object exerts on another. treat the humans as though they were points or uniform-density spheres. use the same gravitational constant in (a) and (b) despite its dependence on the size of the masses.

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

Ms.hidalgo opens the door to her classroom. her classroom is 60 degrees and the air outside is 80. predict what will happen using your knowledge of how heat flows.

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?