Question 1 (1 point) An oscillator has an equation of x(t) = (0.12 m) cos( 7.371t) Assuming that w is in SI units, find the period of oscillation in seconds with two digits of precision. Your Answer: Answer Question 2 (1 point) A mass of 284 g is hanging underneath a spring which has an unknown spring constant. The period of oscillation is 3.14 seconds. Find the spring constant in N/m. Give your answer with two digits of precision. Your Answer: Answer Question 3 (1 point) An oscillation has an amplitude of 0.424 metres and a frequency of 386 Hz. Calculate the displacement at time 0.46 seconds with two digits of precision. assuming it is described by the equation: x(t] = A cos (cut) Your Answer: Answer Question 4 (1 point) An oscillating system doing SHM has a displacement equation x(t) = (0.25 m) cos (30.15t). All units are SI. What is the frequency of the oscillation in Hertz (Hz)? Give your answer with two digits of precision. Your Answer: Answer Question 5 (1 point) Some claim that mountain climbers suffer from headaches due not only to a lack of oxygen in the brain, but also to the expansion of the brain in the cranium. Find the fractional change of the brain's volume due to a reduction in pressure from (1.25x10*2) kPa at sea level to 27.0 kPa high in the Himalayas. The bulk modulus is 2.10 Ga. Give your answer with three significant figures. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10