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
Nostrana [21]
3 years ago
5

Cast-iron cannonballs used in the War of 1812 were occasionally heated for some extended time, so that when fired at houses and

ships, they would set them on fire. If one of these cannonballs with a 20 cm diameter were at a uniform temperature of 1100 K, what heat flux value would exist if it were placed in still air at 300 K? You may assume no thermal radiation effects
Physics
1 answer:
MaRussiya [10]3 years ago
8 0

Answer:

502000W/m²

Heat flux = 800×50.2/20 =

502000W/m²

Explanation:

You might be interested in
The sun is 150,000,000 km from the earth.
aniked [119]

Answer:

<h3>What is the angular speed of the earth around the sun? </h3>

It takes the Earth approximately 23 hours, 56 minutes and 4.09 seconds to make one complete revolution (360 degrees). This length of time is known as a sidereal day. The Earth rotates at a moderate angular velocity of

7.2921159 × 10 {}^{ - 5}  \:  \:  \frac{radians}{second}

<h3>What is the tangential speed of the earth? </h3>

The earth rotates once every 23 hours, 56 minutes and 4.09053 seconds, called the sidereal period, and its circumference is roughly 40,075 kilometers. Thus, the surface of the earth at the equator moves at a speed of 460 meters per second--or roughly 1,000 miles per hour.

8 0
3 years ago
Sarah, who lives in Australia notices that the length of the shadow of the flagpole is getting shorter every day when measured a
Allisa [31]

Answer:

Time zone is one important factor in difference in location and this in turn affects the result of the resolution and rotation of shadow produced from the sun or other illumination.

Therefore someone at a place might see a clear large shadow due to shinny sun reflection and another a small or dull Shadow at same time if the intensity of the sun or lighting source is going down.

Explanation:

The closer a body/object is to a lighting source the larger the shadow it produces, and the farther the body the smaller the shadow produced.

3 0
3 years ago
According to Kepler's harmonic law, Neptune would have a _________ orbit around the Sun than Mercury.
chubhunter [2.5K]
Neptune would have a slower orbit i just did this

3 0
3 years ago
Read 2 more answers
Simple curiosity is not a legitimate reason to complete a scientific investigation.
jok3333 [9.3K]
True......I would say...
7 0
3 years ago
Read 2 more answers
Colors of light that combine to produce white light PLEASE COMMENT WITH A B C D
Oduvanchick [21]
A- additive colors

Because if colors are added it gets brighter but if colors are subtracted it makes black
8 0
3 years ago
Other questions:
  • Rearrange the formula for mechanical energy to solve for height:
    8·1 answer
  • How does brainy work
    5·2 answers
  • A downhill skier was able to move 560 meters in 25 seconds. What is the skier’s average speed? (Round your answer to the nearest
    7·2 answers
  • Please help me with 1 and 2
    6·1 answer
  • The position of a particle is given by the function x=(5t3−8t2+12)m, where t is in s. at what time does the particle reach its m
    12·2 answers
  • What is the kinetic energy of a soccer ball which has a mass of 0.8 kg and is kicked at a velocity of 10 m/s
    8·1 answer
  • A certain spring stretches 3 cm when a load of 15 n is suspended from it. how much will the spring stretch if 30 n is suspended
    11·2 answers
  • Priya is responsible for collecting canned food along three different streets for her school's annual Thanksgiving Food Drive. S
    14·1 answer
  • Need help with a physics question.
    11·1 answer
  • What is the direction of the normal contact force of the road on the wheels?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!