Adisk of radius 14 cm, initially at rest, begins rotating about its axis with a constant angular acceleration of 8.2 rad/s2. what are the following values at t = 10.0 s? (a) the angular velocity of the diskrad/s(b) the tangential acceleration at and the centripetal acceleration ac of a point at the edge of the diskat = m/s2ac = m/s2

a) the angular velocity is ω= 82 rad/seg

b) the tangencial acceleration is a = 1.148 m/s²

c) the centripetal acceleration is ac = 941.36 m/s²

Explanation:

for rotational motion

ω= angular velocity

ωo = initial angular velocity

α= angular acceleration

t = time

R= radius

a= tangencial acceleration

ac = centripetal acceleration

a) ω= ωo + α*t = 0 + 8.2 rad/s2 * 10 s = 82 rad/seg

b) a= α*R =  8.2 rad/s2* 14 cm = 114.8 cm/s² = 1.148 m/s²

c) ac= ω²*R =  (82 rad/seg)² * 14 cm = 94136 cm/s² = 941.36 m/s²

the cellphone, they would then know if the killer would have contacted them or always hated them. or if it was a breakup. but if that is not the case, then it would be the clothing. to put in a bullet, it would have to be put in by hands. hands have finger prints which, would have giving you the answer of who done it.

explanation:

-first use of geothermal energy occurred more than 10,000 years ago in north america by american paleo-indians

-the first industrial use of geothermal energy began near pisa, italy in late 18th century

-in 1904, italian scientist piero ginori conti invented the first geothermal electric power plant in which steam was used to generate the power

-with the above experiment, the first geothermal plant in usa started in 1922 with a capacity of 250 kilowatts

-however, in 1946 first ground-source geothermal heat pump installed at commonwealth building in portland, oregon

-during the 1960’s, pacific gas and electric began operation of first large scale geothermal power plant in san francisco, producing 11 megawatts

-in 1973, when oil crisis began many countries began looking for renewable energy sources and by 1980’s geothermal heat pumps (ghp) started gaining popularity in order to reduce heating and cooling costs

-as effect of climate change started showing results, governments of various countries joined hands to fight against it, for which kyoto protocol was signed in japan in 1997, laid out emission targets for rich countries and required that they transfer funds and technology to developing countries, 184 countries have ratified it

hope this