An engineer is designing a runway for Boeing. Several planes will use the runway and the engineer must design it so that it is long enough for the largest Boeing 777-9 to become
airborne before the runway ends. If the Triple 7 accelerates at 4.54 m/s^2 and has a liftoff
speed of 90.9 m/s, what is the minimum allowed length for the runway?

The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples

The radius of an atom is closest in size to a