Physics High School

A 2-inch, f/4 reflector has a focal length of:

6 inches
8 inches
4 inches
2 inches

A 2-inch, F/4 Reflector Has A Focal Length Of:6 Inches8 Inches4 Inches2 Inches

Answers

Answer 1
I’m pretty sure it’s 8 sorry if I’m wrong

Related Questions

Speed = Distance Time Velocity = 1. Find the velocity of a truck that travels 75miles north in 2.5 hours? List: Equation: Substitution: Answer with units:​

Answers

Answer:

187.5 m/s (i think)

Explanation:

If you use the formula V= T times displacement you can find this out by doing the following-

Displacement equals 75 m

T equals 2.5 hrs

75x2.5= 187.5

and since velocity is measured in m/s, it becomes

187.5 m/s

A wave has a period of 4 seconds. Find it’s frequency.

Answers

Answer:

4 x the frequncy

Explanation:

So 4 x the number

Your personal hygiene is more important to avoid you becoming ill, more so than spreading germs.
True
False

Answers

I think it’s False, because spreading germs can impact and spread way easier than having a good hygiene ( but still wash your hand!)

What phase of matter are the particles least energetic, most dense, and best organized?
A. Plasma
B. Gas
C. Liquid
D. Solid

Answers

The answer to your question is D solid
The answer It’s D: solid

HELP ME PLEASE I need the answer now and I will give all my brain lists

Answers

Answer:

I'd say it's B

Sorry if I get you wrong-

Why do some organisms never turn into fossils?
A. They are far too large to be buried in the ground.

B. They are made mostly of soft tissues.

C. They contain too much protein to be preserved.

D. They contain chemicals that prevent the hardening of their bodies.

Answers

Answer:

The answer is B.

Explanation:

Since they are made up of soft tissues, they decompose become they become fossils.

A liquid has a specific heat of 9 J/g • °C and a solid has a specific heat of 3 J/g • °C. Which
substance, the solid or liquid will heat up faster? Which will cool down faster?

Answers

Explanation:

substances have been in direct sunlight for up to 60 minutes. ... cool the fastest? ... 0.60 J/g °C. Match & then label each substance with its specific heat capacity ...

1. What is the difference between thermal energy and heat? Give an example.

Answers

Answer:

when you run u get tied

Explanation:

I do not now this one

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