Which metalloid is often found in microchips, semiconductors, and sand?

a.

boron

b.

arsenic

c.

germanium

d.

silicon

What is the speed of the teeth of a 15 cm diameter saw blade that rotated at 12 rad/s.

If the voltage of the secondary side of the transformer is less than? and the voltage of the primary side of the transformer exceeds? to ground, the secondary side shall be grounded.?

The inner planets formed: a. by collisions and mergers of planetesimals. b. in the outer solar system and then were deflected inward by interactions with Jupiter and Saturn. c.

What is the subjective perception of frequency

Complete this equation that represents the process of nuclear fusion. Superscript 226 Subscript 88 Baseline R a yields Superscript A Subscript B Baseline R n + Superscript 4 Subscript 2 Baseline H e A: B:

Two football players collide on the field. Before the collision, their total momentum was 450 kgm/s to the north. What is their total momentum after the collision? A. More than 450 kgm/s north B. 450 kgm/s north C. Less than 450 kgm/s north D.

Jane and John Doppler effect

If you combine 430.0 ml of water at 25.00 °c and 140.0 ml of water at 95.00 °c, what is the final temperature of the mixture? use 1.00 g/ml as the density of water. s

While working out, a man performed 200 j of work in 3 seconds. What was his power?

A funnel-shaped low pressure closure