Simple pendulum A swings back and forth at twice the frequency of simple pendulum B. Which statement is correct?
A) Pendulum B is twice as long as A.
B) Pendulum B is twice as massive as A.
C) The length of B is times the length of A.
D) The mass of B is times the mass of A.
E) The length of A is times the length of B.
C
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If an object's mass is decreasing while a constant force is applied to the object, the acceleration
A) decreases. B) increases. C) remains the same.
A 100-N uniform ladder, 8.0 m long, rests against a smooth vertical wall. The coefficient of static friction between ladder and floor is 0.30 . What minimum angle can the ladder make with the floor before it slips?
a. 22° c. 18° b. 51° d. 59°
Double-Slit Interference: A double slit that is illuminated with coherent light of wavelength 644 nm produces a pattern of bright and dark fringes on a screen 6.00 cm from the slits. If the slits are 2783 nm apart, what is the distance on the screen between the 4th and the 2nd bright fringes on one side of the central maximum?
A. 23.0 cm B. 17.6 cm C. 11.5 cm D. 3.13 cm E. 14.7 cm
Because of air resistance, an object falling a great distance may reach a ______________ velocity
Fill in the blank(s) with correct word