Why is a scientific theory the most powerful explanation scientists have to offer? (2 points) Group of answer choices Many different scientists have added data from their own experiments to build the theory.
A theory is the same things as a hypothesis.
Scientific theories are usually the work of a single scientist.
Technology is used to provide the experimental data for a scientific theory.

What is the gravitational attraction between a dating couple whose centers of mass are 0.630 m apart if the boy weighs 715 n and the girl weighs 465 n?

With physics question #5? for any !

You have been hired to design a spring-launched roller coaster thatwill carry two passengers per car. the car goes up a 10-m highhill, then descends 15m to the track's lowest point. you'vedetermined that the spring can be compressed a maximum o 2.0m andthat a loaded car will have a maximum mass of 400kg. for safetyreasons, the spring constant should be 10% larger than the minimumneeded for the car to just make it over the top. a) what spring constant (k) should you specify ? b) what is the maximum speed of a 350 kg car if the spring iscompressed the full amount.