# PHYSICS6 - FORM 0[1 An ambulance at rest has a siren that...

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FORM 0 [1] An ambulance at rest has a siren that emits a frequency of 400 Hz. The ambulance is moving toward a pedestrian with a speed 34 m/s on a day when the speed of sound in air is 340 m/s.The pedestrian receives a frequency of [A] 360Hz [B] 400Hz [C] 364Hz [D] 440Hz [E] 444Hz [2] A 5 m tall marble column of cross-sectional area 0.1 m 2 supports a mass of 40,000 kg. By how much is the column shortened if Young’s modulus for marble is Y =50 × 10 9 N/m 2 . [A] 8 × 10 - 4 m [B] 4 × 10 - 4 m [C] zero [D] 2 × 10 - 4 m [E] 4 × 10 - 5 m [3] A wave has a frequency of 200 Hz and a wavelength of 2 m. Its wave speed is [A] 400m [B] 0 . 0025m/s [C] 100m/s [D] 400m/s [E] 0 . 01m/s [4] A source radiates 2 W of power uniformly in all directions. What is the intensity at a distance of 2 m from the source? [A] 0 . 08W/m 2 [B] 0 . 16W/m 2 [C] 1 . 0W/m 2 [D] 0 . 5W/m 2 [E] 0 . 04W/m 2 [5] A ball of 6 cm radius is rolling without slipping along a horizontal surface. The angular speed of the ball is 10 rad/s. The center of the ball has a translational speed of [A] 120 cm/s [B] 60 m/s [C] 20 m/s [D] 60 cm/s [E] 0 [6] The volume of a gas goes from 0 . 5m 3 to 0 . 6m 3 while the pressure remains constant at 2 × 10 5 N/m 2 . The work done by the gas is [A] - 1 × 10 4 J [B] zero J [C] - 2 × 10 4 J [D] 1 × 10 4 J [E] 2 × 10 4 J [7] The internal energy of a system decreases by 6 × 10 5 J during a process in which the system has done 2 × 10 5 J of work upon the environment. The system has [A] lost 4 × 10

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PHYSICS6 - FORM 0[1 An ambulance at rest has a siren that...

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