Answer:
Focal length is 6.67 cm.
Explanation:
Object distance, u, from the lens = 10 cm
Image distance, v, to the lens = 10 cm + 10 cm
= 20 cm
Apply the lens formula to determine the focal length, f, of the lens.
= 
+ 
= 
+ 
= 
= 
Find the inverse of both sides, so that;
f = 
= 6.67
f = 6.67 cm
The focal length of the lens is 6.67 cm.
Answer:
Triglycerides
Explanation:
Triglycerides are a kind of fat, the most common type in the body. Triglycerides can come directly from foods, such as oils, butter, and other fats, and they can be created by a person’s body when that individual consumes more calories than his or her body needs as a way of storing those surplus calories.
The medical term for having elevated levels of triglycerides is hypertriglyceridemia.
In fasting laboratory tests, a normal triglyceride level is below 150 milligrams per deciliter (mg/dL). High is considered 200 to 499 mg/dL. Very high is over 500 mg/dL.
High triglyceride levels can increase risk for heart disease, stroke, and nerve damage.
Answer:
B) Symbiosis
Explanation:
Symbiotic relationships in nature means that two organisms help each other. Coral reefs are poisonous to most sea life EXCEPT the clownfish, which uses the coral as homes. The clownfish also provide food for the coral, so both benefit.
Answer is: Petrochemical production
Answer:Spectroscopy helps astronomers to determine the composition, temperature, density, and motion of an object.
Infrared spectroscopy helps to identify the atoms and molecules in the object.
The red shift or blue shift (Doppler Effect) in a spectral line tells how fast the object is receding from Earth or coming toward it.
The Doppler shift enables astronomers to discover extrasolar planets.
As a planet orbits its star, the star is alternately moving away from or toward us.
Astronomers can use the Doppler shifts to calculate the speed of the star and the mass of the planet that is tugging on it.
Explanation:
