Two pucks of equal mass collide. one puck (puck a) is stationary before the collision. after the collision the puck that was initially stationary moves along in the same direction in which the puck that hit it (puck b) was initially moving. which of the following statements is correct if the total energy of the system is conserved during the collision (elastic collision)?

a. the puck b rebounds.

b. there isn’t enough information to answer the question.

c. both pucks slide past the point of collision.

d. the puck b remains at the point of collision.

D

Explanation:

Given

initial velocity of puck A is

initial velocity of Puck B is

After collision Puck A started moving in the direction of B and collision is elastic so Puck B remains at the point of collision and Puck A moves with initial velocity of B.

answer: 0.20

explanation: this can only be the answew because all the other measuremnets are not close

-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