Height of a cliff When a rock is dropped from a cliff into an ocean, it travels approximately 16t? feet in t seconds. If the splash is heard 4 seconds later and the speed of sound is 1100 ft/sec, approximate the height of the cliff.

Q: You have your ear against a new speaker when it emits a sounds with an intensity of 160 decibels

A: 1)Sounds below 70db don't cause any hearing damage.   2) Beyond 70db sounds isn't good for your ears…

Q: You are on an airplane. The pilot announces the plane’s speed over the intercom. Which speed do you…

A: The pilot is reporting the speed relative to the ground, as it will give a way to estimate the…

Q: 4 ft V26 ft

A: Let us consider the following triangle So by Pythagoras theorem, we know that AC2=AB2+BC2

Q: Hearing High-pitched tones that young people canhear at 30 decibels must be produced at 90…

A: Consider the given: The intensity of sound that a young people can hear is 30 dB.Elder people can…

Q: Solve the problem. The time T necessary to make an enlargement of a photo negative varies directly…

A: I am going to solve the problem by using some simple algebra to get the required result of the given…

Q: A train traveling 1 kilometer in 1 minute and 20 seconds if the train continues at this rate,How far…

A: Speed of train

Q: After how many seconds does the angry bird hit the ground? The bird will hit the ground seconds…

A: Guven,                  h(t) = -0.15t^2 +1.5t+18 Since at ground the height of the bird becomes o.…

Q: QUESTION 2 Volume of a flat ended compressed air drum is 15m3. It experiences a maximum stress of…

A: Given that Volume of a flat ended air drum = 15 m3. σmax=145 MN/m2P=2.2 MN/m2L=4D To find wall…

Q: Alex is 9 feet away from his car when he begins walking directly away from his car at a constant…

A: Solution of above question is written below.

Q: counter %3D 1 cm 1 cm = 4 ft sink table How long is the counter?

A: Given,               one cube is equal to 1cm.

Q: Newton's law of cooling states that the temperature of an object changes at a rate proportional to…

A: If the coffee has a temperature of 164 degrees Fahrenheit when freshly poured, and 1 minutes later…

Q: The speed of light is 2.9979 × 108 m/sec. Approximate log (2.9979 × 108). log (2.9979 × 108) ~ 3

A: We need to approximate log2.9979×108.Log formula: logMN=logM+logN ; logxn=nlogx

Q: occer player kicks a ball with an initial velocity v of 7 feet per second from a starting height a…

A:

Q: If there are 19 school days left until Thanksgiving and 9 hours in a school day, how many seconds…

A: