Choose the correct statement about the acceleration of the car.
a) the acceleration of this car is zero.
b) the acceleration of this car is positive.
c) the acceleration of this car is negative.
d) the acceleration of this car is 15
m
s
.

What is work? how much work is done to move an object 0 meters?

In a load, the load is paralel to the shaft. n a. angular n b. thrust n c radial n d. none of the above

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.