(b) Explain any THREE causes of environmental degradation
(c) A stone of mass 10kg is thrown to a height of 100m.
i. What is the kinetic energy (K. E) at the maximum height?
ii. What is the potential energy (P. E) at the maximum height?
111.
What is the K. E and P. E just as the stone strikes the ground?
iv. Calculate the K. E and hence the velocity after falling 50m (take g=10ms).
Answers: 3
Physics, 21.06.2019 22:50
Aplane takes off from an airport and flies to town a, located d1 = 215 km from the airport in the direction 20.0° north of east. the plane then flies to town b, located d2 = 230 km at 30.0° west of north from town a. use graphical methods to determine the distance and direction from town b to the airport. (enter the distance in km and the direction in degrees south of west.)
Answers: 2
Physics, 22.06.2019 01:30
Ajet plane has a sound level of 120 db at a distance of 60 m. what is the q23. sound level at a distance of 6.0 km? (60)2 (6000)? om solution 80db db, hint: 16x assume ultrasound waves travel through the body of an animal at 1540 q24. m/s. if a 30,000 hz signal were reflected off a portion of a heart which was moving toward the source at 3 m/s, what frequency signal would return to the stationary source? solution 30.117hz
Answers: 3
Physics, 22.06.2019 03:00
Which of the following harmful chemicals are found in tobacco smoke? a. carbon monoxide b. carbon dioxide c. nicotine b. carbon dioxide d. both a and c
Answers: 2
Physics, 22.06.2019 18:30
How many meters will a car travel if its speed is 45 m/s in an interval of 11 seconds? question 2 options: a) 450 meters b) 495 meters c) 4.09 meters d) 498 meters
Answers: 2
(b) Explain any THREE causes of environmental degradation
(c) A stone of mass 10kg is thrown to a h...
Mathematics, 31.01.2020 01:43
Mathematics, 31.01.2020 01:43
Mathematics, 31.01.2020 01:43
Mathematics, 31.01.2020 01:43
Chemistry, 31.01.2020 01:43
Mathematics, 31.01.2020 01:43
Arts, 31.01.2020 01:43
Chemistry, 31.01.2020 01:43
Geography, 31.01.2020 01:43