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
Andreyy89
2 years ago
6

Why does a purple flower appear purple when white light shines on it?

Physics
1 answer:
grandymaker [24]2 years ago
5 0
The flower absorbs all light but purple, making it appear, purple!
You might be interested in
You are making cookies that call for 3 tablespoons of molasses, but you are having trouble measuring out the thick, syrupy liqui
Andreyy89
You could heat the syrup, grease the spoon with shortening, because if you do, then the molasses won't stick when you pour it out of the spoon into the batter.
3 0
3 years ago
Read 2 more answers
A solid sphere is placed on a frictionless floor in a very long corridor and is given a quick push so that it begins to slide, w
prohojiy [21]
I think it’s D I hope it helps
8 0
2 years ago
a 1 m length of string is wrapped around a solid disk, of mass .25 kg and a radius of .30m, mounted on a frictionless axle. the
Nezavi [6.7K]

Answer:

60 rad/s

Explanation:

∑τ = Iα

Fr = Iα

For a solid disc, I = ½ mr².

Fr = ½ mr² α

α = 2F / (mr)

α = 2 (20 N) / (0.25 kg × 0.30 m)

α = 533.33 rad/s²

The arc length is 1 m, so the angle is:

s = rθ

1 m = 0.30 m θ

θ = 3.33 rad

Use constant acceleration equation to find ω.

ω² = ω₀² + 2αΔθ

ω² = (0 rad/s)² + 2 (533.33 rad/s²) (3.33 rad)

ω = 59.6 rad/s

Rounding to one significant figure, the angular velocity is 60 rad/s.

8 0
3 years ago
Which statement best describes the characteristics of white light? A. White light is composed of a spectrum of many different co
kodGreya [7K]
A white light is, by definition, apparently colorless light, for example ordinary daylight. It contains all the wavelengths of the visible spectrum at equal intensity.

so A.
6 0
3 years ago
A "590-W" electric heater is designed to operate from 120-V lines.
lukranit [14]

Answer:

a) 24.4 Ω

b) 4.92 A

c) 495.9 W

d)

c. It will be larger. The resistance will be smaller so the current drawn will increase, increasing the power.

Explanation:

b)

The formula for power is:

P = IV

where,

P = Power of heater = 590 W

V = Voltage it takes = 120 V

I = Current Drawn = ?

Therefore,

590 W = (I)(120 V)

I = 590 W/120 V

<u>I = 4.92 A</u>

<u></u>

a)

From Ohm's Law:

V = IR

R = V/I

Therefore,

R = 120 V/4.92 A

<u>R = 24.4 Ω</u>

<u></u>

c)

For constant resistance and 110 V the power becomes:

P = V²/R

Therefore,

P = (110 V)²/24.4 Ω

<u>P = 495.9 W</u>

<u></u>

d)

If the resistance decreases, it will increase the current according to Ohm's Law. As a result of increase in current the power shall increase according to formula (P = VI). Therefore, correct option is:

<u>c. It will be larger. The resistance will be smaller so the current drawn will increase, increasing the power.</u>

7 0
2 years ago
Other questions:
  • please help!!!!!what is the main function of a telescope? A.it brings scientists closer to distant obejects B. it magnifies ligh
    5·2 answers
  • A student increases the temperature of a 300 cm^3 balloon from 30c to 60c. what will the new volume of the ballon be
    11·2 answers
  • How are speed and velocity similar ?
    9·2 answers
  • The hill is covered in gravel so that the truck's wheels will slide up the hill instead of rolling up the hill. The coefficient
    14·1 answer
  • What is the frequency of 20 mm microwaves? A) 100 MHz B) 400 MHz C) 15 GHz D) 73 GHz E) 98 GHz
    5·1 answer
  • Normally the rate at which you expend energy
    6·1 answer
  • Which of the following is a true statement?
    8·2 answers
  • 1. What occurs when there is a change in position of an object with respect to a reference starting point?
    10·2 answers
  • Which best explains horatio’s error? magnetism is not produced by electric currents unless the wire is coiled. the magnetic fiel
    11·2 answers
  • Sonam and Wangchuk are taking part in a long jump event during their school's annual sports day. Sonam ran a few distances befor
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!