When a 100g mass is hung on the end of a spring, the spring extends by 2.2cm. The toy has a mass of 75g. What would happen if joined the two springs end to end, what would be the extension of the toy? What would be the new elastic potential energy?

The table below shows the acceleration of gravity on different bodies in the solar system. on which body would a 10 kg lamp has the most gravitational potential energy when lifted to a height of 2 m? a. earth b. mars c. neptune d. uranus

On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( ρ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s.t.p.?

Write down two additional questions about earth's magnetic field that will make your presentation more informative.