The Universe is isotropic, but not homogenous

a. True
b. False
Indicate whether the statement is true or false


False

Physics & Space Science

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Some young star clusters contain large numbers of T Tauri stars

a. True b. False Indicate whether the statement is true or false

Physics & Space Science

Spherical Mirrors: A concave spherical mirror with a radius of curvature of 20 cm creates a real image 30 cm from the mirror. How far is the object from the mirror?

A. 20 cm B. 15 cm C. 7.5 cm D. 5.0 cm

Physics & Space Science

The radius of Earth is

A. larger at the equator. B. the same everywhere. C. not known. D. larger at the poles.

Physics & Space Science

Two long straight parallel wires separated by a distance of 20 cm carry currents of 30 A and 40 A in opposite directions. What is the magnitude of the resulting magnetic field at a point that is 15 cm from the wire carrying the 30-A current and 25 cm from the other wire?

a. 51 ?T b. 33 ?T c. 72 ?T d. 64 ?T e. 46 ?T

Physics & Space Science