A rocket is launched AGAINST gravity from rest with an acceleration of 4 bj m/s2 m/s2 . The engines
last for 10 seconds before they shut off. The rockets keeps flying upwards but it eventually stops due to
gravity. Answer the questions using gravity -9.8 bj m/s2
• Compute the velocity of the rocket RIGHT BEFORE the engines shut off.
• Compute the height the rockets reaches while the engines are still on.
• Compute the time the rocket takes to reach MAXIMUM HEIGHT.
• What is the maximum height the rocket reaches RESPECT to the ground?

9.98 kg of r-134a at 300 kpa fills a rigid container whose volume is 14 l. determine the temperature and total enthalpy in the container. the container is now heated until the pressure is 600 kpa. determine the temperature and total enthalpy when the heating is completed. use data from the steam tables.

You can estimate the degree to which a bond between two atoms is ionic or covalent by calculating the

Acyclotron is used to produce a beam of high-energy deuterons that then collide with a target to produce radioactive isotopes for a medical procedure. deuterons are nuclei of deuterium, an isotope of hydrogen, consisting of one neutron and one proton, with total mass 3.34×10−27kg. the deuterons exit the cyclotron with a kinetic energy of 6.40 mev .a-what is the speed of the deuterons when they exit? b-if the magnetic field inside the cyclotron is 1.25 t, what is the diameter of the deuterons' largest orbit, just before they exit? c-if the beam current is 350 μa how many deuterons strike the target each second?