Answer:
Solids
Explanation:
Some of the properties that limit the motion of particles in a solid:
1. The molecules of a solid are very closely packed together thereby limiting their motion compare to molecules of liquid which are free to move and gas with loosely bound molecules.
2. The molecules of a solid are held together by strong inter-molecular force due to very small inter-molecular spaces.
3. The motion of molecules in a solid vibrates only in their mean or fixed positions.
4. The particles are arranged in definite pattern and shape. A solid neither takes on the shape of its container like liquid, nor does it fill the entire volume available like a gas.
5. A solid is rigid and does not flow like liquid and gas.
6. A solid has a definite volume and can not be easily compressed.
Modern space suits augment the basic pressure garment with a complex system of equipment and environmental systems designed to keep the wearer comfortable, and to minimize the effort required to bend the limbs, resisting a soft pressure garment's natural tendency to stiffen against the vacuum. A self-contained oxygen supply and environmental control system is frequently employed to allow complete freedom of movement, independent of the spacecraft.
Three types of spacesuits exist for different purposes: IVA (intravehicular activity), EVA (extravehicular activity), and IEVA (intra/extravehicular activity). IVA suits are meant to be worn inside a pressurized spacecraft, and are therefore lighter and more comfortable. IEVA suits are meant for use inside and outside the spacecraft, such as the Gemini G4C suit. They include more protection from the harsh conditions of space, such as protection from micrometeorites and extreme temperature change. EVA suits, such as the EMU, are used outside spacecraft, for either planetary exploration or spacewalks. They must protect the wearer against all conditions of space, as well as provide mobility and functionality.
We know: θ = ωo t + 1/2*α*t^2
so, α = 2*(θ - ωo t ) / t^2
Given: angular velocity = 96.0 rad/sectime = 7 secangular distance travelled = 28 rev
We know, In one revolution it completes 360 degrees = 6.28319 radangular distance traveled = 28 rev * 6.28319 rad
So, angular acceleration = 2*(28*6.28 - 96*7) / 7^2 = -20.25 rad/sec^2