Which of the following is not a major subfield of physics? A. Electricity and ma

Question

Which of the following is not a major subfield of physics? A. Electricity and magnetism. B. Thermodynamics C. Statistics. D. Optics. 1. A quantity that is a measure of how the position of a body changes with time is A. distance. B. velocity. C. acceleration D. time. 2. 3. One inch is defined as 2.54 centimeters. The correct expression for a 3-inch length, expressed in meters, is 4. Ascout steps off a distance of 120 steps. If each step is 70 cm, what is the distance in meters? 7. A student releases a ball from rest on an inclined plane and measures that it travels a distance of 0.8 m in a time of 4.0 s. The average speed of the ball is 5. 6. In order to go from rest to 50 m/s in 10 s, a jet must be able to accelerate at

Explanation / Answer

1 - Statistics is not a major subfield of physics.

2- Velocity is that quantity that measured by changes postion of body with time.

3 1 inch = 2.54 cm

Then 3 inch = (3*2.54 ) cm

= 7.62 cm

100 cm = 1 m

Hence 3 inch = 0.0762 m

4- 1 step = 70 cm

So 120 step = (70*120)

= 8400 cm

100 cm =1 m

Hence distance travelled = 84 m

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