What is true of both gravity and magnetism?

Both are dependent on mass.

Both forces can act without objects touching.

Both forces are directly proportional to the distance between the objects.

Neither is a fundamental force of nature.

Astudent pushes on a 20.0 kg box with a force of 50 n at an angle of 30° below the horizontal. the box accelerates at a rate of 0.5 m/s2 across a horizontal floor. what is the value of the normal force on the box? 200 n 243 n 156 n 225 n

Aturntable a is built into a stage for use in a theatrical production. it is observed during a rehearsal that a trunk b starts to slide on the turntable 10 s after the turntable begins to rotate. knowing that the trunk undergoes a constant tangential acceleration of 0.31 m/s2, determine the coefficient of static friction between the trunk and the turntable.

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?