All categories

3 years ago

Use the H-R diagram to answer the following questions.

Physics

2 answers:

PtichkaEL [24]3 years ago

7 0

Answer:

What is the approximate temperature of the supergiant Betelgeuse?

3000 K

Which star on this diagram is the most similar to the Sun in luminosity and temperature?

Centauri A

I am Lyosha [343]3 years ago

5 0

Answer: The answer is 3000 K and Centauri A.

Explanation:

Just did it and got it right ♡´･ᴗ･`♡

You might be interested in

When the plastic coating around a cord is damaged, why does the cord become hazardous?

klemol [59]

Because its expose to the wires inside that could electrify you.

6 0

3 years ago

Onur drops a basketball from a height of 10m on Mars, where the acceleration due to gravity has a magnitude of 3.7m/s2. We want

lbvjy [14]

Explanation:

It is given that, Onur drops a basketball from a height of 10 m on Mars, where the acceleration due to gravity has a magnitude of 3.7 m/s².

The second equation of kinematics gives the relationship between the height reached and time taken by it.

Here, the ball is droped under the action of gravity. The value of acceleration due to gravity on Mars is positive.

We want to know how many seconds the basketball is in the air before it hits the ground. So, the formula is :

$\Delta x=v_ot+\dfrac{1}{2}at^2$

t is time taken by the ball to hit the ground

$v_o$ is initial speed of the ball

So, the correct option is (A).

8 0

3 years ago

In this circuit the battery provides 3 V, the resistance R1 is 7 Ω, and R2 is 5 Ω. What is the current through resistor R2? Give

sveta [45]

Answer:

The current pass the $R_2$ is $I = 0.25 A$

Explanation:

The diagram for this question is shown on the first uploaded image

From the question we are told that

The voltage is $V = 3V$

The first resistance is $R_1 = 7 \Omega$

The second resistance is $R_2 = 5 \Omega$

Since the resistors are connected in series their equivalent resistance is

$R_{eq} = R_1 +R_2$

Substituting values

$R_{eq} = 7 + 5$

$R_{eq} = 12 \Omega$

Since the resistance are connected in serie the current passing through the circuit is the same current passing through $R_2$ which is mathematically evaluated as

$I = \frac{V}{R_{eq}}$

Substituting values

$I = \frac{3}{12}$

$I = 0.25 A$

3 0

3 years ago

Which of the following can break solid rock

sergeinik [125]

I would think the answer would be c

7 0

2 years ago

Read 2 more answers

Jet fuel is sold by the pound. Your jet needs 1,500 gallons of fuel. Jet fuel weighs 7.0 pounds per gallon and costs $12.00 per

galben [10]

Answer:

$ 57,272.73

Explanation:

Create a lengthy equation to convert the units you are given to the units you need to answer the question.

Your starting with gallons and pounds and you need your answer to be in Dollars.

$ 12.00 1 kg 7.0 lb 1500 gal

------------ X ----------- X ------------ X -------------- = $ 57,272.73

1 kg 2.2 lb 1 gal 1

5 0

2 years ago