Four model rockets are launched in a field. The mass of each rocket and the net force acting on it when it launches are given in the table below.
Rocket
Mass (kg)
Force (N)
1
4.25
120
2
2
3.25
120
3
5.50
120
4
4.50
120
Which rocket has the highest acceleration?
A. Rocket 3
B. Rocket 1
C. Rocket 4
D. Rocket 2

In a laboratory, nakisha mixes sodium hydroxide solution with an indicator called phenolphthalein. when combined, they create a pink solution. nakisha wonders if mixing other solutions with phenolphthalein will also create this pink color. how could she use the scientific inquiry process to explore it further?

Write the equation for momentum, first using symbols for the variables, then using words for the variables.

Steam is generated in a boiler of a cogeneration plant at 10 mpa and 450°c at a steady rate of 5 kg/s. in normal operation, steam expands in a turbine to a pressure of 0.5 mpa and is then routed to the process heater, where it supplies the process heat. steam leaves the process heater as a saturated liquid and is pumped to the boiler pressure. in this mode, no steam passes through a condenser, which operates at 20 kpa. (a) determine the power produced in the turbine and the rate at which process heat is supplied in this mode. (b) determine the power produced in the turbine and the rate of process heat supplied if only 60 percent of the steam is routed to the process heater and the remainder is expanded to the condenser pressure. (3.32 mw; 9.69 mw; 4.25 mw; 5.82 mw)