A consequence of surface tension for water is
A) capillary action.
B) wet sand being firmer than dry sand.
C) the different tastes of hot and cold oily soup.
D) all of the above
E) none of the above
Answer: D
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Mass on a Spring: A geologist suspends a 0.30-kg stone on an ideal spring. In equilibrium the stone stretches the spring 2.0 cm downward. The stone is then pulled an additional distance of 1.0 cm down and released from rest.(a) Write down the equation for the vertical position y of the stone as a function of time t, using the cosine function. Take the origin at the equilibrium point of the stone, with the positive y direction upward.(b) How fast is the stone moving at a time equal to 1/3 of its period of motion?
What will be an ideal response?
A 4.00 kg mass is connected to a spring with a spring constant of 9.00 N/m. The velocity is given by the expression v(t) = 8.00 cm/s sin
What is the maximum acceleration of the simple harmonic motion?
A. 10.0 
B. 16.2
C. 19.2
D. 20.2
E. 24.5
Colors seen in soap bubbles and oil slicks are due to
A. The interference of light reflected from the 2 different boundaries B. The interference of the incident light with the light reflected from the first surface C. The interference of the incident light with the light reflected from the 2nd surface. D. The diffraction of light due to the different indices of refraction.
What should the height of a slide in a park be so that a child will reach the bottom of the slide with a speed of 15.0 m/s? Use g = 10.0 m/s2
A) 22.5 m B) 15.1 m C) 11.3 m D) 10.5 m E) 0.75 m