1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
klio [65]
3 years ago
9

You and your friend live in different states and plant identical hydrangea bulbs in your garden. When they bloom, you send each

other pictures. You notice that even though you bought the exact same kind of plant, your hydrangea flowers are blue and your friend’s are pink! On a hunch, you each measure the pH of your soil and find that your soil is a little acidic and your friend’s is a little basic. Why do you think the flowers have different colors?
Physics
2 answers:
Whitepunk [10]3 years ago
8 0

Answer:

sample. rewrite in your own words if you'd like.

Explanation:

Since the hydrangeas are changing color depending on whether the soil is acidic or basic, they must have an indicator. This means that any hydrangea planted in acidic soil will have blue flowers and any hydrangea planted in basic soil will have pink. One common indicator present in many plants is anthocyanin, so maybe hydrangeas contain that chemical.

Gwar [14]3 years ago
8 0

Answer:

it might be late but for those he need it and chenge the words

Explanation:

The hydrangeas are behaving like indicators.  The hydrangeas will be blue in any acidic soil and pink in any basic soil.  Hydrangeas must contain an indicating chemical such as anthocyanin.

You might be interested in
Hey please help Hey please help Hey please help Hey please help Hey please help
meriva
No they aren't the same
6 0
2 years ago
Recall from Chapter 1 that a watt is a unit of en- ergy per unit time, and one watt (W) is equal to one joule per second ( J·s–1
harkovskaia [24]

Answer:

Explanation:

The energy of a photon is given by the equation E_p=h f, where h is the <em>Planck constant</em> and f the frequency of the photon. Thus, N photons of frequency f will give an energy of E_N=N h f.

We also know that frequency and wavelength are related by f=\frac{c}{\lambda}, so we have E_N=\frac{N h c}{\lambda}, where c is the <em>speed of light</em>.

We will want the number of photons, so we can write

N=\frac{\lambda E_N}{h c}

We need to know then how much energy do we have to calculate N. The equation of power is P=E/t, so for the power we have and considering 1 second we can calculate the total energy, and then only consider the 4% of it which will produce light, or better said, the N photons, which means it will be E_N.

Putting this paragraph in equations:

E_N=(\frac{4}{100})E=0.04Pt=(0.04)(100W)(1s)=4J.

And then we can substitute everything in our equation for number of photons, in S.I. and getting the values of constants from tables:

N=\frac{\lambda E_N}{h c}=\frac{(520 \times10^{-9}m) (4J)}{(6.626\times10^{-34}Js) (299792458m/s)}=1.047 \times10^{19}

3 0
2 years ago
A wave has frequency of 50 Hz and a wavelength of 10 m. What is the speed?
Sunny_sXe [5.5K]

Answer:

v=500 m/s

<h3>Solution:</h3>

v=(10m)(50/s)

5 0
2 years ago
Malcolm and Ravi raced each other. The average of their maximum speeds was 260 km/h If doubled, Malcolm's maximum speed would be
AfilCa [17]

Answer

Given,

Average speed of Malcolm and Ravi = 260 km/h

Let speed of the Malcolm be X and speed of the Ravi Y.

From the given statement

\dfrac{X+Y}{2}=260

X + Y = 520 ....(i)

2X - Y = 80  ....(ii)

Adding both the equations

3 X = 600

 X = 200 km/h

Putting value in equation (i)

Y = 520 - 200

Y = 320 Km/h

Speed of Malcolm = 200 Km/h

Speed of Ravi = 320 Km/h

8 0
3 years ago
Is winking a genetic and why?
PolarNik [594]
Yes,and because not everyone can wink and often that someone can only wink with one eye only
4 0
3 years ago
Read 2 more answers
Other questions:
  • How does light determine whether it acts as a particle or a wave?
    8·2 answers
  • *asap*<br> Explain how waves, energy and matter are related.
    14·2 answers
  • Energy stored in the bonds that hold together the atoms and molecules of all substances is called A. mechanical energy. B. elect
    11·2 answers
  • When must scientific theories be changed?
    12·2 answers
  • The mass of your new motorcycle is 250kg. What is the weight on the moon in newtons
    12·1 answer
  • As of December 31, 2013, Stand Still Industries had $2,500 of raw materialsinventory. At the beginning of 2013, there was $2,000
    12·1 answer
  • A free falling object eventually stops on reaching the ground. What happens to its potential energy?
    10·1 answer
  • A lorry pulls forward after initially being stationary, it takes the lorry 80m to reach a speed of
    12·1 answer
  • Imagine that you have three circuit elements: a single bulb, a piece of wire, and a battery. You start by keeping these three el
    10·1 answer
  • Plisssss you can help me pliss
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!