PHY 109 Clicker Questions

If the earth were twice as far away from the sun, the force of gravity attracting earth to the sun would be

one quarter as strong

These astronauts in the ISS are floating because

They are falling around the earth

When on the moon, is your weight the less/more is your mass less/more

Your weight is less, the mass is the same

By measuring the orbital size (semimajor axis) and Orbital period of Jupiter’s moon Europa as it orbits Jupiter, we can measure

Jupiter’s mass

An ice Skater spins with her arms out, what happens when she pulls her arms in?

She spins faster because her angular momentum stays constant

As the earth apporoaches its closest distance to the sun in its orbit in January, what happens it is total energy and gravitational potential energy

The TOTAL energy remains Constant, The Kinetic Energy increases and Gravitational potential energy decreases