Which statement describes gravity? check all that apply.
1. there is no defined unit of measurement for gravity.
2. gravity is the force that pulls objects toward earth’s center.
3. objects that have a small mass will have no gravitational pull.
4. gravitational pull between two objects increases as the mass of one increases.
5. gravitational pull decreases when the distance between two objects increases.

What is the mass of the same rock on the earth

Find the dimensions and area of the largest rectangle that can be inscribed in the upper half of the ellipse. (give your answers in terms of a and b. enter the dimensions as a comma-separated list.)

When a vertical beam of light passes through a transparent medium, the rate at which its intensity i decreases is proportional to i(t), where t represents the thickness of the medium (in feet). in clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity i0 of the incident beam. what is the intensity of the beam "10" feet below the surface? (give your answer in terms of i0. round any constants or coefficients to five decimal places.)