After a marathon many runners are given a shiny, aluminium blanket to wrap around their bodies. Explain why the blanket is shiny and a metal?

A solenoid is formed by winding 23.0 m of insulated silver (resistivity 1.59 * 10-8 Ω·m) wire around a hollow cylinder. The turns are wound as closely as possible without overlapping, and the insulating coat on the wire is negligibly thin.

How does runoff affect the rate of erosion?

In understanding the trait of shyness, a behavioral geneticist will argue that: 1. genetics will determine two levels of shyness and environmental factors will determine which one actually occurs. 2. the influence of genetics on shyness is fixed. 3.

The attraction will vary directly with the separation between the charges.

Efforts to relate gamma-ray bursts with specific sources has had what results so far?

What causes day and night on earth?

A yo-yo can be thought of as a solid cylinder of mass m and radius r that has a light string wrapped around its circumference (see below). One end of the string is held fixed in space.

Why is time an independent variable and position is a dependent variable in a position versus time graph

A geologist estimates that a large boulder weighs 7840 N. What should he estimate the mass of this boulder to be? A. 650 kg B. 740 kg C. 780 kg D. 800 kg

Two objects have the same momentum. Do the velocities of these objects necessarily have (a) the same directions and (b) the same magnitudes? Give your reasoning in each case.