Thanks Several cans of different sizes and shapes are all filled with the same l

Question

Thanks Several cans of different sizes and shapes are all filled with the same liquid to the same depth. Then: a) the weight of the liquid is the same for all cans b) the force of the liquid on the bottom of each can is the same c) the least pressure is at the bottom of the can with the largest bottom area d) the greatest pressure is at the bottom of the can with the largest bottom area e) the pressure on the bottom of each can is the same The diagram shows a U-tube having cross-sectional area A and partially filled with oil of density p. A solid cylinder, which fits the tube tightly but can slide without friction, is placed in the right arm. The system reaches equilibrium. The weight of the cylinder is: a) ALpg b) L^3 pg c) Ap(L + h)g d) AP(L - h)g e) none of the above An object attached to one end of a spring makes 20 vibrations in 10 seconds. Its angular frequency is: a) 0.79 rad/s b) 1.57 rad's c) 2.0 rad/s d) 6.3 rad/s e) 12.6 rad's If the length of a simple pendulum is doubled, its period will: a) halve b) increase by a factor of Squareroot 2 c) decrease by a factor of Squareroot 2 d) double e) remain the same A string carries a sinusoidal wave with amplitude of 2.0 cm and a frequency of 100 Hz. maximum speed of any point on the string is: a) 2.0 m/s b) 4.0 m/s c) 6.3 m/s d) 13 m/s e) unknown (not enough information is given)

Explanation / Answer

E. The pressure on the each bottom of the can is same

D.

E. 2*3.14*2 = 12.6rad/s

B.

a.

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