A sample of a solid nonmetal is compared to a sample of a solid metal. Both samples have the same volume. What is the most likely difference between the two samples?
The nonmetal has more mass.
O The nonmetal takes up more space.
O The metal has more mass.
O The metal takes up more space.
Plzzz help !!!

Current from a charged capacitor lights a bulb. as time goes on the brightness of the

An element becomes a positively charged ion when itloses protons.loses electrons.gains electrons.gains neutrons.

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.