Kilogram an mass beacuase tou
Answer:
it was made in July 29, 1958, United States
it was founded by
Dwight D. Eisenhower
The first rocket which could fly high enough to get into space was the V2 missile which was first launched by Germany in 1942. The first rocket which actually launched something into space was used to launch Sputnik, the first satellite, on October 4, 1957. The rocket that launched Sputnik was a R-7 ICBM rocket.
Explanation:
Answer:
20 mph
Explanation:
Granny stopped from 50mph,
Her deceleration per unit time is
a = 50 - 0 = 50m/hr^2
This is also the amount of deceleration you experience per unit time (because both cars are identical), therefore your final speed with which you collide with the truck will be,
50 = 70 - v
V = 70 - 50 = 20mph
The first part of the microscope that should first be used to adjust the focus when starting with the lowest power lens would be the coarse adjustment knob.
There are two knobs in a typical light microscope with which objects on slides can be brought into focus:
- Coarse adjustment knob
- Fine adjustment knob
The 2 knobs are used to adjust the stage to either bring it up towards the objective lens or down away from them. The coarse adjustment knob, however, moves the stage a considerable distance with each turn. The fine adjustment knob, on the other hand, only moves the stage very little with each turn.
The lowest power lenses are often short. Hence, using the coarse adjustment knob is ideal in order to quickly bring objects on slides into focus.
The fine adjustment knob comes highly recommended at high objectives because high objectives lenses are usually long and using the coarse adjustment knob can lead to a breakage of the slide by the lens.
More on bringing objects into focus on a microscope can be found here: brainly.com/question/24319677
