An Olympic skier moving at 22.0 m/s down a 30.0° slope encounters a region of wet snow, of coefficient of friction µk = 0.740 . How far down the slope does she go before stopping?

a. 119 m
c. 175 m
b. 145 m
d. 199 m


C

Physics & Space Science

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What kind of waves are produced by the alternating current in standard electric power lines?

A) 60 Hz electromagnetic waves. B) 60 Hz electro-chemical waves. C) 100 MHz [mega-hertz] electromagnetic waves, in the FM radio region of the spectrum. D) Standard AC is simply a vibration of electrons that doesn't produce any kind of waves at all. E) 100 MHz sound waves.

Physics & Space Science

Electric Field of Point-Charges: The electric field at a point 2.8 cm from a small object points toward the object with a strength of 180,000 N/C. What is the object's charge q? (k = 1/4??0 = 8.99 × 109 N ? m2/C2)

A. -16 nC B. +16 nC C. -17 nC D. +17 nC

Physics & Space Science

When an acid reacts with a carbonate or hydrogen carbonate, the products are water, carbon dioxide, and ______________

Fill in the blank(s) with correct word

Physics & Space Science

Answer the following statement(s) true (T) or false (F)

1. Consider an infinite solenoid. Imagine placing a mirror so that mirror’s plane contains the solenoid’s central axis. Such a mirror would satisfy the conditions of the mirror rule. 2. An infinite solenoid’s magnetic field is uniform everywhere in the solenoid’s hollow interior.

Physics & Space Science