What was the main purpose of the know-nothing party? to support the expansion of cities and city services to prevent the use of slave labor in northern plantations to prevent catholics from being elected to political office to reduce the number of immigrants arriving from germany

B.  

to prevent the use of enslaved labor in Northern plantations

Explanation:

we can solve this via the kinematic equation:

where the vertical velocity is zero and so:

since the height of the building is 29.3 meters then:

the ball was in motion for approximately 2.45 seconds

jupiter is mainly composed of hydrogen and helium just like a star. spectral analysis of jupiter has revealed that in addition to hydrogen and helium, the planet is made of water, methane and ammonia. those elements are in trace amounts. the core of the planet is thought to contain some rock and metallic hydrogen. i hope this will give you the answer to your question! : d