Answer:
You should always put the low power objective lens into the center place.
Explanation:
- Always cover the microscope with the supplied dust cover when not in use.
- Store in a dry place.
- In humid or moist environments, it is advisable to store the microscope in a waterproof container with a drying agent.
- Do not touch the optical lens with bare fingers.
- Do not store the microscope in direct sunlight.
Answer:
A. 21 rad/s
B. 200.5 rpm
C. 26.46 rad/s2
D. 0.299 Hz
Explanation:
Parameters given are:
Tangential velocity,v = 1.26m/s
Diameter (outer edge) = 0.120m
Outer edge radius, ro = 0.12/2
= 0.06m
A. Calculate Angular velocity
Angular velocity, w = v/r
= v/ro
= 1.26/0.06 = 21 rad/s
In rpm,
2pi/60 rad/s = 1 rpm
1 rad/s = 60/2pi rpm
Sp, 21 rad/s = 60 * 21/2pi rpm
= 200.5 rpm
B. Calculate the inner edge radius, ri given w = 500 rpm
Converting rpm to rad/s,
= 2pi/60 * 500 rad/s
= 52.34 rad/s
ri = v/w
= 1.26/ 52.36
= 0.024m
C. Calculating centripetal acceleration, a from the outer edge, ro
a = v2/r = w2r
= (1.26)2/0.06
= 26.46 rad/s
D. Calculate the frequency, f of the outer edge angular velocity, w = 21 rad/s
f = 2pi/w
= 2pi/21
= 0.299 Hz (or per second)
The type of lipid that serves as one component of cell membrane is phospholipids.
Answer:
receive food from the mother
Answer:
The correct answer is - 1000:1
Explanation:
Prokaryotic cells are unicellular organism of the domain prokaryotes and archaea. These cells lacks cell organelles however other components such as plasma membrane, cytoplasm and DNA. The size of the prokaryotic cell ranges between 0.1 to 5.0 µm.
On other hand eukaryotic cells also contain cellular structure like plasma membrane DNA , cytoplasm but also include true nucleus and other cell organelles that are double membrane bounded. The average cell size of these cells are tend to be - 10 to 100 of the cell size
Thus, the correct answer is - 1000:1.
