What are base isolators and give an example of an earthquake proof building

A 5.6 MeV (kinetic energy) proton enters a 0.39 T field, in a plane perpendicular to the field. What is the radius of its path?

Two boys are standing on a bridge 10 m above a stream. One boy throws a rock horizontally with speed of 5.0 m/s at exactly the same time that the other boy drops a rock vertically.

Air at the poles tends to flow close to the surface toward the equator. What can you conclude about the characteristics of this polar air?

Suppose that the height of the incline is h = 14.7 m. Find the speed at the bottom for each of the following objects. 1. solid sphere 2. spherical shell 3. hoop 4. cylinder m/s

Kenny klutz drops his physics book off his aunt's high-rise balcony. it hits the ground below 1.5 s later? a. with what speed does it hit? b. how high is the balcony? ignore air drag.

Two stars, x and y, have the same temperature. star x is ten times more luminous than star y. which star has the larger radius

If the weight of an object of mass "m" is "mg," then the weight of an object of mass "2m" is A. mg/2 B. mg C. 2mg D. 4mg

In an old house, the heating system uses radiators, which are hollow metal devices through which hot water or steam circulates. In one room the radiator has a dark color (emissitivity = 0.830). It has a temperature of 64.1 oC.

Air is compressed adiabatically in a piston-cylinder assembly from 1 bar, 300 K to 10 bar, 600 K. The air can be modeled as an ideal gas and kinetic and potential energy effects are negligible.

Three rocks, each of varying mass and volume, are released from a window at the same time. The window is at height h above the ground.