If HST has a tangential speed of 7,750 m/s, how long is HST's orbital period? The radius of Earth is 6.38 * 106 m.

How does an increase in thermal energy affect molecules? They stop moving. They begin to vibrate more. They decrease in temperature. They lose kinetic energy.

Gravitational lensing ___. (A) occurs when light passes near a massive object and is deflected by the object's gravitational field. (B) occurs when the mass of a galaxy is greater than expected from the luminosity of the galaxy.

A 0.5 kg stone is raised from 1m to 2m height from the ground. what is the change in potential energy of the stone?

How would you find the density of a gallon of milk?

Based on the locations of the elements aluminum (AI), silicon (Si), and phosphorus (P) on the periodic table, which lists the elements in order from the least conductive to the most conductive? A. P, AI, SI B. P, SI, AI C. Si, Al, P D. AI, SI, P

Calculate the mass defect of the helium nucleus 42He. The mass of neutral 42He is given by MHe=4.002603u.

A person lifts a 4.5 kg cement block a vertical distance of 1.2 m and then carries the block horizontal - ly a distance of 7.3 m. determine the work done by the person and by the force of gravity in this process.

A tree is standing in the middle of a meadow. As you watch, the wind begins to blow and the tree bends. Which statement best explains how you could tell that a net force was acting on the tree? OA) The tree had momentum.

A 5.1 kg black bear cub weighs 49.98 N. The cub is carried by its mother up into the safety of a white pine tree.

Which location is associated with persistent upwelling of cold water to the ocean surface?