Answer and Explanation:
In any experiment, the observed values are the actual values obtained in any experiment.
The calculated values are the values that are measured by using the observed values in a formula.
The observed values are primary values whereas the calculated values are the secondary values as calaculations are made using observed values.
Yes, if the observed values are of low accuracy.
The values should be recorded with proper care and attention in order to avoid any error.
Answer:
warning signs
Explanation:
give directions on your surroundings
Answer:
Answer for the question :
"the two boxcars A and B have a weight of 20 000 Ib and 30 000 Ib, respectively. If they coast freely down the incline when the brakes are applied to all the wheels of car A causing it to skid, determine the force in the coupling C between the two cars. The coefficient of kinetic friction between the wheels of A and the tracks is μk=0.5. The wheels of car B are free to roll. Neglect their mass in calculation."
is explained in the attachment.
Explanation:
Answer:
The branches of physics are;
- Classical physics
- Modern physics
- Nuclear physics
- Atomic physics
- Geophysics
- Biophysics
Explanation:
Physics is a branch of science that studies nature, properties of matter and energy. The subjects in study are; mechanics, light, heat, light, sound, electricity, properties of atoms and magnetism.
The common branches are;
- Thermodynamics which that studies heat, how it is transferred and effects
- Sound that studies production, properties and application of sound waves
- Light that deals with properties,pysical aspects and objects that utilize light
- Electricity and magnetism that studies charges, their effects and relation with magnetism
- Classical physics that studies laws of motion and gravity
- Modern physics that study theory of relativity and quantum mechanics
