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
ICE Princess25 [194]
3 years ago
12

which statement is true about wind energy? A) It is clean and non-polluting. B) It is only effective near water. C) It is costly

and hard to produce. D) It is not as useful as fossil fuels.
Physics
2 answers:
nikitadnepr [17]3 years ago
5 0
I think it would be option A . 
Temka [501]3 years ago
5 0
A, it is clean and non polluting

You might be interested in
Why is it helpful to study the light that comes off stars?
asambeis [7]
 It is helpful to study the light that comes off stars because C. The light from a star gives hints of what elements make up a star.
6 0
3 years ago
hey pls help with this HDJSJDH im rlly bad at this kinda stuff :,) i'll mark the correct answer brainliest
timama [110]
I am pretty sure it’s A
The cue exerts force onto the white ball which pushes the blue ball into the direction of the hole.
7 0
2 years ago
Read 2 more answers
An insulated beaker with negligible mass contains 0.250 kg of water at 75.0C. How many kilograms of ice at -20.0C must be droppe
kkurt [141]

Answer:

The amount of kilograms of ice at -20.0°C that must be dropped into the water to make the final temperature of the system 40.0°C = 0.0674 kg

Explanation:

Heat gained by ice in taking the total temperature to 40°C = Heat lost by the water

Total Heat gained by ice = Heat used by ice to move from -20°C to 0°C + Heat used to melt at 0°C + Heat used to reach 40°C from 0°C

To do this, we require the specific heat capacity of ice, latent heat of ice and the specific heat capacity of water. All will be obtained from literature.

Specific heat capacity of ice = Cᵢ = 2108 J/kg.°C

Latent heat of ice = L = 334000 J/kg

Specific heat capacity of water = C = 4186 J/kg.°C

Heat gained by ice in taking the total temperature to 40°C = mCᵢ ΔT + mL + mC ΔT = m(2108)(0 - (-20)) + m(334000) + m(4186)(40 - 0) = 42160m + 334000m + 167440m = 543600 m

Heat lost by water = mC ΔT = 0.25 (4186)(75 - 40) = 36627.5 J

543600 m = 36627.5

m = 0.0674 kg = 67.4 g of ice.

3 0
3 years ago
A 0.540-kg bucket rests on a scale. Into this bucket you pour sand at the constant rate of 56.0 g/s. If the sand lands in the bu
romanna [79]

Answer:

a) 12.8212 N

b) 12.642 N

Explanation:

Mass of bucket = m = 0.54 kg

Rate of filling with sand  = 56.0 g/ sec = 0.056 kg/s

Speed of sand = 3.2 m/s

g= 9.8 m/sec2

<u>Condition (a);</u>

Mass of sand = Ms = 0.75 kg

So total mass becomes = bucket mass + sand mass = 0.54 +0.75=1.29 kg

== > total weight = 1.29 × 9.8 = 12.642 N

Now impact of sand = rate of filling × velocity = 0.056 × 3.2 =  0.1792 kg. m /sec2=0.1792 N

Scale reading is sum of impact of sand and weight force ;

i-e

scale reading = 12.642 N+0.1792 N = 12.8212 N

<u>Codition (b);</u>

bucket mass + sand mass = 0.54 +0.75=1.29 kg

==>weight = mg = 1.29 × 9.8 = 12.642 N (readily calculated above as well)

6 0
2 years ago
What is the mass of a 3,500-N rock?
Viktor [21]
350kg because to get Newton’s it’s mass x Gravity, earths gravity is x10 so 3500 divided by 10 is 350
6 0
3 years ago
Other questions:
  • What is a force that opposes the motion between two objects in contact with each other?
    8·1 answer
  • What’s the difference between distance and displacment
    6·1 answer
  • If a person travels at a velocity of 4 m/s for 10 seconds what will be the displacement?
    7·1 answer
  • It is 6.00 km from your home to the physics lab. as part of your physical fitness program, you could run that distance at 10.0 k
    11·1 answer
  • How are different types of radiation arranged along the electromagnetic spectrum
    6·1 answer
  • Who is known as the "father of modern chemistry" because he first organized all known elements into four different
    7·2 answers
  • Which of the following ocean motions are powered by the wind? waves tides surface currents deep ocean currents
    10·2 answers
  • PLEASE HELP WILL GIVE BRAINLIEST!!! DUE SOON!! GIVE ME 2 REASONS WHY
    12·2 answers
  • What is used to calculate or determine intensity during exercise
    13·1 answer
  • A proton in the nucleus of an atom has an electrical charge of:<br> neutral<br> -<br> +<br> zero
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!