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
DochEvi [55]
3 years ago
15

PLEASE HELP is lighting firecrackers a form of conduction, convention, or radiation

Physics
2 answers:
gtnhenbr [62]3 years ago
8 0

Answer:

conduction

Explanation:

recall that conduction is the transfer of heat between objects that come in direcr contact.

You are putting heat directly on the part of the firework that allows it to spark, therefore it is conduction.

Convection takes place within a fluid.

Radiation is indirect heat through waves. (think of the sun warming us indirectly)

Ivahew [28]3 years ago
6 0

Answer:

Convection

Explanation:

conduction is like, electricity. radiation is like using a microwave.

You might be interested in
How big is the image produced by the periscope compared to the size of the object
ipn [44]

<span>As long as both mirrors are set at 45% and the same size then you see the same as is reflected in the upper mirror </span>

<span>Put a lens in the middle of the tube </span>

<span>? </span>

<span>We use mirrors when we drive cars ect </span>

<span>Normally they are set across from a concealed entrance or one that is hard to see both ways like the inside of a hairpin bend. Sometimes only to help in one direction. </span>

<span>Sonar which is sound waves that are sent out at a set rate then reflected by objects. The longer the gap between the two the further away it is, They still use periscopes to target boats though. </span>

<span>The periscope can only reflect what is outside so if you could see it because there is enough light then Yes. If you could not see it because it is dark then No unless you get into Info-Red light or Image Intensifying systems as well </span>
8 0
3 years ago
If you are given force and time you can determine power if you can know
Ivenika [448]

Answer: Distance

Explanation: because with force and distance we can determine work, and with work and time we can determine power.

7 0
3 years ago
Place several E-Field Sensors at a few points on different equipotential lines, and look at the relationship between the electri
Vlada [557]

Answer:

2.

Explanation:

  • If a charge is moved along a equipotential line, no work is done on the charge.
  • If we remember that the work done by an external force, is just the product of the component of the force parallel to the displacement, if the force produces no work, this means that is perpendicular to the displacement.
  • So, as the electric field is just the force per unit charge, and has the same direction as the force (for a positive charge), it must be perpendicular to any equipotential line.
  • As the electric field (by convention) has the same direction as it would be taken by a positive test charge, and positive charges move from higher voltages to lower ones, the electric field is directed toward lines of lower voltages (like it happens between the plates of a capacitor).
3 0
3 years ago
A winery has a vat with two pipes leading to it. the inlet pipe can fill the vat in 66 ?hours, while the outlet pipe can empty i
guapka [62]
The time taken to fill the vat can be found using the least common multiple [LCM]. Given that the first pipe fills the tank in 66 hours and the second one empty the tank in 1010 hours, the time taken to fill the tank will be:
LCM(66,1010)
=66*1010
=66,660 hours
the answer is:
66,660 hours

5 0
3 years ago
A car traveling south is 200 kilometers from its starting point after 2 hours. What is the average velocity of the car?
Oksi-84 [34.3K]

Explanation:

Total displacement = 200 km

Total time taken = 2 hour...

Now...

average \: velocity \:  =  \frac{total \: displacement}{total \: time \: taken \: }  \\

=  \frac{200}{2}  \\

= 100 kilometers/hour south

5 0
3 years ago
Other questions:
  • A force of 38.7 N is applied to the master cylinder of a hydraulic brake system. The cylinder has an area of 7.61 cm^2. The forc
    7·1 answer
  • An airplane has mass of 5,320 kg. At takeoff, how much lift force is necessary to accelerate the plane upward at a rate of 1.40m
    7·1 answer
  • An automobile tire has a volume of 1.63 x 10-2 m3 and contains air at a gauge pressure (pressure above atmospheric pressure) of
    9·1 answer
  • A bridge is made with segments of concrete 50 m long. If the linear expansion coefficient is 12  10–6 (°C)–1 , how much spacing
    5·1 answer
  • Which situation shows potential energy transforming into kinetic energy 1.A car stopped at a stoplight 2.A flowerpot falling fro
    14·1 answer
  • Two long barges are floating in the same direction in still water, one with a speed of 10 km/h and the other with a speed of 20
    5·1 answer
  • A 12,500 N alien UFO is hovering about the surface of Earth. At time , its position can be given as () = ((0.24 m/s^3)^3 + 25 m)
    10·1 answer
  • -
    12·1 answer
  • Question 1 of 10
    11·2 answers
  • The movement of both oxygen and carbon dioxide in the body is accomplished by ___.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!