Answer:
mixture
Explanation:
All matter is made of particles; these can be single atoms or atoms chemically joined to make molecules. Using this fact, matter can be classified into three broad groups: elements, compounds and mixtures. In an element, all the atoms are of the same type. If more than one type of atom is chemically joined, then a compound has been formed. If more than one type of atom or molecule is contained in the same substance, and the particles aren't chemically joined, this is a mixture.
Answer:
35.2 ps
Explanation:
Hello!
A US short ton is equal to 2 000 pounds, therefore:
2.25 tons = 4500 pounds
Now lets convert the area of each tire footprint:
1 cm = 0.393701 in
12.5 cm = 4.92126 in
16.5 cm = 6.49607 in
Therefore, the area of the footprint is: 31.9688 in^2
Then, the pressure exerted by the car is given by the weigth devided by the total area, that is 4 times the area of the footprint :
4500 /(4 * 31.9688) psi = 35.1906 psi
Rounding to the first tenth
35.2 psi
No fire uses oxygen sparks and flammable wood or whatever you choose to burn
Answer:
21.375 J
21.375 J
3.49489 m/s
21.375 J
0.62254 m
Explanation:
k = Spring constant = 1900 N/m
x = Displacement of spring = 15 cm
g = Acceleration due to gravity = 9.81 m/s²
m = Mass of block = 3.5 kg
Potential energy is given by
The potential energy of the spring is 21.375 J
As the energy in the system is conserved we get the kinetic and potential energy are equal
The velocity of block is 3.49489 m/s
Again, as the energy of the system is conserved
The gravitational potential energy is 21.375 J
The height the block will reach is 0.62254 m