A person who has a weight of 165 pound-force [lbf] on Earth is travelling to Mars in a spacecraft. As long as the engines on the spacecraft are not operating, the person is essentially weightless during the voyage. During a course correction, the spacecraft undergoes an acceleration of 0.72 g. The term “g” is the Earth-normal gravity, so 1 g is 9.8 meters per second squared [m/s 5 ]. This acceleration makes it feel like there is gravity in the spacecraft, and the person will have a perceived weight during the acceleration period, rather than feeling weightless. What is the person’s mass, in units of kilograms [kg], in the spacecraft while travelling to Mars when the engines are not running?
A person who has a weight of 165 pound-force [lbf] on Earth is travelling to Mars in a spacecraft. As long as the engines on the spacecraft are not operating, the person is essentially weightless during the voyage. During a course correction, the spacecraft undergoes an acceleration of 0.72 g. The term “g” is the Earth-normal gravity, so 1 g is 9.8 meters per second squared [m/s 5 ]. This acceleration makes it feel like there is gravity in the spacecraft, and the person will have a perceived weight during the acceleration period, rather than feeling weightless. What is the person’s mass, in units of kilograms [kg], in the spacecraft while travelling to Mars when the engines are not running?
Solution Summary: The author calculates the mass of the person in kilograms. The value of acceleration is 0.72 g, and a is the acceleration.
A person who has a weight of 165 pound-force [lbf] on Earth is travelling to Mars in a spacecraft. As long as the engines on the spacecraft are not operating, the person is essentially weightless during the voyage. During a course correction, the spacecraft undergoes an acceleration of 0.72 g. The term “g” is the Earth-normal gravity, so 1 g is 9.8 meters per second squared [m/s5]. This acceleration makes it feel like there is gravity in the spacecraft, and the person will have a perceived weight during the acceleration period, rather than feeling weightless. What is the person’s mass, in units of kilograms [kg], in the spacecraft while travelling to Mars when the engines are not running?
A motor has circular cylinders with a 3.875 inch diameter.
The height of the cylinder is 4.7 inches and has an ideal gas
The piston moves up in the cylinder and compresses the ideal gas. At the end of compression, the cylinder has a volume of 7.37 cubic inches
The amount of gas and the temperature of the gas stay the same during compression and the initial pressure in the cylinder is 1.2 atmosphere [atm].
Find the pressure after compression in units of pounds-force per square inch [psi].
You are heating motor oil to make it flow better from the original shipping container to the new container you built. You know that the heating rate of the motor oil is 2.50 degrees Celsius per slug second [°C
/(slug s)]. Express this heating rate in units of degrees Fahrenheit per pound-mass second [°F/ (lbm s)].
Click the icon to view the conversion table.
Click the icon to view the factors for temperature intervals conversion
The heating rate is
°F / (lbm s). (Round your answer to three decimal places.)
The gravitational constant g is 9.807 m/s² at sea level, but it decreases as you go up in elevation. A useful equation for this decrease
In g is g= a - bz, where z is the elevation
above sea level, a = 9.807 m/s², and b=3.32 x 10-61/s². An astronaut "weighs" 80.0 kg at sea level. [Technically this means that
his/her mass is 80.0 kg.] Calculate this person's weight in N while floating around in the International Space Station (z=325 km). If the
Space Station were to suddenly stop in its orbit, what gravitational acceleration would the astronaut feel Immediately after the satellite
stopped moving?
The person's weight in N while floating around in the International Space Station Is
The astronaut feels a gravitational acceleration of
m/s²
N.
Chapter 8 Solutions
Thinking Like an Engineer: An Active Learning Approach (4th Edition)
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8.01x - Lect 27 - Fluid Mechanics, Hydrostatics, Pascal's Principle, Atmosph. Pressure; Author: Lectures by Walter Lewin. They will make you ♥ Physics.;https://www.youtube.com/watch?v=O_HQklhIlwQ;License: Standard YouTube License, CC-BY