Answer:
When two substances are mixed together, a color change is observed. This observation is not enough evidence that there is a chemical reaction happening because color changes are not indicators of chemical reaction:
The angular magnification of the microscope is 78.125.
<h3>What is angular magnification?</h3>
the ratio of the angle at the eye that an optical instrument's image occupies to the angle at the eye that an object occupies while not being viewed through an optical instrument is called as angular magnification.
Thus we can calculate it as:
- focal length of objective lens, fo = 1.6 cm
- focal length of the eyepiece, fe = 2.5 cm
- Distance between the lenses, L = 15 cm
- Least distance of distinct vision for normal eye, d = 25 cm
The formula for the magnification of the compound microscope is given by
M = - 78.125
Thus, the magnification of the compound microscope is 78.125.
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The wavelength of the light decreases as it enters into the medium with the greater index of refraction. The wavelength of the light remains constant as it transitions between materials.
Answer:
Answered
Explanation:
By the law of conservation of the momentum The car-bug system moment will remain the same before and after the collision. And since the mass of the car is much higher than the bug, the change in velocity of the car will be negligible as compared to the change in velocity of the bug and hence the change in momentum of the bug will be very large and change in momentum of the car will be negligible.
Force is a vector quantity
so pulling from opposite side will be negative
so
750+(-500)= 250N
C is the right answer
becauseause the man on the right applies greater force.