Fossils formed when dinosaurs died
Answer: <u>Mixtures can be physically separated but pure substances cannot be physically separated.</u>
Explanation: Mixtures can be physically separated by using methods that use differences in physical properties to separate the components of the mixture, such as evaporation, distillation, filtration and chromatography. A pure substance, any compound or element, can't be separated into different atoms by physical methods. Pure substances are compounds and elements (made up of the same atom or same molecule respectively), while mixtures are an assortment of different substances put together. Hope this helps ^-^.
Answer:
A, C
Explanation:I did it??????????//
M1V1=M2V2, M - molarity, V- volume, it should be in the same units
So we take 1.00L =1000 mL
6.00*50.0 mL=M2*1000mL
M2=(6.00*50.0 mL)/1000mL=300/1000=0.300 M
The acceleration of the system is
Explanation:
In this problem, the kid sitting in the soap box pushes against the stone with a force of 20 N.
According to Newton's third law of motion, when a force is applied on object, the object pushes back with an equal and opposite force: therefore in this case, the kid (and the soap box) also experience a force of 20 N forward.
Then, we can use Newton's second law of motion to find the acceleration of the kid+soap box system:
where:
F = 20 N is the net force on the system
m = 50 + 10 = 60 kg is the total mass of the system
a is the acceleration of the system
And solving for a, we find:
Learn more about force and acceleration:
brainly.com/question/3820012
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