Bill and John go for a run. Bill has a mass of 50 kg and is able to run at a constant speed of 9 m/s when he goes for a jog. John is a bit bigger and has a mass of 65kg and can only keep a constant speed of 7 m/s Who has more momentum ? Explain .

The intensity, or loudness, of a sound can be measured in decibels (db), according to the equation , where i is the intensity of a given sound and is the threshold of hearing intensity. what is the intensity, in decibels, [i(db)], when ? use a calculator. round to the nearest whole number. 8 9 19 80

What is the role of lenses in microscopy?

What are some properties of transverse waves?