Hearing damage may occur when a person is exposed to a sound intensity level of 90 dB for a period of 9 hours. one particular eardrum has an area of 2.0 x 10-4 m. How much sound energy is incident on this eardrum diuring this time

Two masses are tied together and one is tied to a center post on a frictionless table. The cords are of equal length, R=0.25m. Both masses rotate on the table making 100 revolutions per minute. m1=m2=1kg. What is the centripetal acceleration of m1 and m2?

A projectile is launched at an angle of 30 degrees with the horizontal and a speed of 30 m/s. a) What is the range? b) What is its height after one second? c) How much time does it spend in the air?

what does f=ma mean

I need to get information about nanofluids

An arrow starting from rest, leaves the bow with a speed of 25.0 m/s. I fthe avaerage force exerted on the arrow by the bow were doubled

If the entire population of the United States forms a human chain by holding hands, how many times can such a chain be wrapped around the earth's equator?

1340-1350 inventions related in physics

1. What is the field outside the capacitor plates?

A spring is mounted at an angle of = 26 on a frictionless incline as illustrated in the figure below. The spring is compressed to 15 cm where it is allowed to propel a mass of 5.5 kg up the incline. a) If the spring constant is 550 N/m, how fast is the mass moving when leaves the spring? (b)...