A bullet is fired from ground level with a speed of 150 m/s at an angle 30.0° above the horizontal at a location where g = 10.0 m/s2. What is the horizontal component of its velocity after 4 seconds?
A) 150 m/s
B) 35 m/s
C) 130 m/s
D) 75.0 m/s
E) 37.5 m/s
C
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Which of the following describes a major challenge of interstellar travel at near light speed?
A) Supernova explosions could destroy spaceships passing nearby. B) Asteroid fields floating in interstellar space will present a severe navigational challenge. C) Any interstellar journey will take much longer than the lives of the crew members. D) Time dilation will slow the heartbeats of the crew to a dangerously low rate. E) Atoms and ions in interstellar space will hit the spacecraft like a flood of dangerous cosmic rays.
The physician orders gentamicin 40 mg IVPB q8 hr for infection. The medication is supplied in gentamicin 40 mg/100mL to infuse over 1 hour. Tubing drop factor is 20 gtt/mL. How many drops per minute will be given?
A(n) ______ is a single point in an electronic image.
A. serif B. simbit C. pixel D. pica
Based on DNA studies, it seems that all life on Earth
A) shares a common ancestor. B) belongs to one of just two kingdoms: plants and animals. C) arose from one of five distinct ancestors that lived about 2 billion years ago. D) requires oxygen to survive.