Answer:
Two or more simple machines work together to form a complex machine. Compound machines can do more difficult jobs than simple machines alone. Examples of complex machines are bicycle, wheel barrow, crane, car jack, lawn mover
Explanation:
Answer:
32.4 N
Explanation:
The force of gravity acting on the dog is equal to its weight on the Moon, which is given by
where:
m is the mass of the dog
g is the acceleration of gravity on the moon
In this problem, we have:
m = 20 kg
g = 1.62 m/s^2 (acceleration due to gravity on the moon)
Substituting numbers into the equation, we find
Index of refraction of a substance =
(speed of light in vacuum) / (speed of light in the substance)
Index in quartz = (2.9979 x 10⁸ m/s) / (2.0567 x 10⁸ m/s)
<em>Index = 1.4576 </em> (no units)
$(0,,386. Sup apt g 9=6 ♂️
Answer: When a material is heated or cooled, two changes may happen to the particles within the material: Chemical bonds between the particles may form, break or stretch. There is a change in the chemical potential store of energy in the material. The material will heat up or cool down as the particles within it gain or lose speed.
Explanation:
