The reactive force developed by a jet engine to push an airplane forward is called thrust, and the thrust developed by the engine of a Boeing 777 is about 85000 lbf. Express this thrust in N and kgf. The thrust In Nis The thrust in kgf is [ 1×105 N. 104 kgf.

A runner wants to run 10.0 km. She knows that her running pace is 7.5 miles per hour. How many minutes must she run?

The temperature of a system rises by 120°C during a heating process. Express this rise in temperature in kelvin. The rise in temperature is 393 K. 2 5 8

In the 1970s cartoon The Super Friends, the Wonder Twins helped Superman and others fight crime. One of the Wonder Twins was Zan, who was able to take on the form of H2O in its various phases (ice, liquid water, water vapor). After taking a physics class, he decides to conduct a little experiment by turning into an ice igloo in the park on a hot day. (a) If his total mass as an igloo is 64.50 kg and he starts with a temperature of −13.50°C, how much heat must flow into him to completely melt his body? J(b) He continues absorbing energy up to the point where he would start to vaporize (100.0°C). How much more heat is required to raise his temperature to the vaporization point? J(c) How much more heat is required to turn him into water vapor at 100.0°C? J(d) If we model the water vapor molecules making up his body as having only six degrees of freedom, what is the average kinetic energy of one of the water vapor molecules that make up Zan? (Consider the case when Zan is water vapor at…

There is 1 liter of water in a cube-shaped container. Each side of the container is 10.01 cm in length. If the water starts at room temperature (20◦C), to what temperature should you heat the water to make it exactly fill the container?

SHOW THE TABLE USED! A fixed amount of carbon dioxide goes through a polytropic process where n=1.4. The initial temperature of the CO2 is 250 K. The final temperature of the CO, is 400 K. If the mass of the CO2 is 12 kg and behaves as an ideal gas, determine the work, the change in internal energy, and the heat transfer during the process (in kJ). Note that PV=mRT. In this problem, can the carbon dioxide be considered an ideal gas at the initial conditions if the initial pressure is 150 kPa? Justify your answer quantitatively.

Answer the following:

A force F = (8.05î - 3.35t j) N, with t in units of s, is applied to a 2.00 kg object initially at rest. (a) At what time (in s) will the object be moving with a speed of 15.0 m/s? (Round your answer to at least two decimal places.) (b) How far (in m) is the object from its initial position when its speed is 15.0 m/s? (c) What is the total displacement (in m) through which the object traveled at this time? (Express your answer in vector form.)

Basing from the table, which planet would you weigh the greatest? The least?