How fast is the ambulance moving
An ambulance with a siren emitting a whine at 1,600 Hz overtakes and passes a cyclist pedaling a bike at 2.44 m/s. After being passed, the cyclist hears a frequency of 1590 Hz. How fast is the ambulance moving?
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Discuss the reasons for the main movements in Australia's terms of trade over the last decade. Define the terms of trade. Obtain data for the terms of trade 2002 to 2012(ABS).
How does the F-statistic work to support comparison of group means in an ANOVA?In the sum-of-squares perspective, what role does the MS-between and MS-within play in comparing group means?
With what tension must a rope with length 2.50 m and mass 0.120 kg be stretched for transverse waves of frequency 40.0 Hz to have a wavelength of 0.750 m?
The other end passes over a pulley and supports a 1.5D-kg mass. The linear mass density of the rope is 0.0550 kg/m. (a) What is the speed of a transverse wave on the rope?
The booming apparently results from a periodic oscillation of the sliding layer of sand-the layer's thickness expands and contracts. If the emitted frequency is 90 Hz, what are:
Explain how a DFS can be used to look for cycles in a graph. Explain why DFS trees cannot contain cross edges. (It may help to think about what it would mean if they did contain cross edges).
Typical white dwarf stars ate composed of material with a bulk modulus of 1.33 x 1022 Pa and a density of 1010 kg/m3. They have radii equal to 9.0 x 10-3 solar radius. What is the approximate pulsation period of a white dwarf?
Choose one of the exercised from the award winning book Computer Science Unplugged. Record a creative presentation of this material.
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