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
kherson [118]
3 years ago
13

What reaction involves burning?

Physics
1 answer:
Alex_Xolod [135]3 years ago
6 0

Answer:

exothermic

Explanation:

An exothermic reaction is a chemical reaction that releases energy through light or heat. It is the opposite of an endothermic reaction. Expressed in a chemical equation: reactants → products + energy.

You might be interested in
A transformer is used to convert mechanical energy to electric energy
PtichkaEL [24]
No it isn't. That's a description of a generator.
3 0
3 years ago
An apple in a tree has a gravitational store of 8J. As it falls, it accelerates constantly until it hits the ground. What is the
natita [175]

Answer:

Explanation:

Given that on the tree the gravitational energy stored is 8J

Then, mgh = 8J.

The apple begins to fall and hit the ground, what is the maximum kinetic energy?

Using conservation of energy, as the above is about to hit the ground, the apple is at is maximum speed, and the height then is 0m, so the potential energy at the ground is zero, so all the potential of the apple at the too of the tree is converted to kinetic energy as it is about to hits the ground. Along the way to the ground, both the Kinetic energy and potential energy is conserved, it is notice that at the top of the tree, the apple has only potential energy since velocity is zero at top, and at the bottom of the tree the apple has only kinetic energy since potential energy is zero(height=0)

So,

K.E(max) = 8J

5 0
3 years ago
an aircraft has a liftoff speed of 53 m/s. what is the minimum constant acceleration an airplane must have to reach that takeoff
xxMikexx [17]

Answer:

a=3.34\ m/s^2

Explanation:

<u>Accelerated Motion </u>

It refers to the motion of objects in which velocity is not constant over time. If the change of the velocity occurs at the same rate, then we say it's uniformly accelerated. Being   v_o= initial speed, v_f= final speed, a= constant acceleration, x= distance traveled

Then, the scalar relation between them is

v_f^2=v_o^2+2ax

The aircraft needs to reach a liftoff speed of 53 m/s from rest (assumed) having only 420 meters to do so. We can compute the acceleration by solving for a

\displaystyle a=\frac{v_f^2-v_0^2}{2x}

\displaystyle a=\frac{53^2-0^2}{2(420)}

\boxed{a=3.34\ m/s^2}

6 0
3 years ago
Specific heat is the amount of heat required to raise the temperature of a material by 1°C per what unit?
nydimaria [60]

The heat required to raise the temperature of the unit mass of a given substance by a given amount (usually one degree).


or C. Mass if you're on plato

3 0
3 years ago
Read 2 more answers
A person run 21.0 km west then runs 10.0 km east what is the persons distance
VashaNatasha [74]

Answer:

31.0 km

Explanation:

21.0+10.0=31.0 km

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which characteristics can be used to differentiate star systems? Check all that apply.
    13·2 answers
  • Prehistory can be described as _____.
    8·1 answer
  • How do you identify the zero reference position for calculating mechanical potential energy? What is the most common zero refere
    8·1 answer
  • A gauge is reading the pressure at the bottom of a river, at a depth of 6 m. Would the reading be greater or smaller than the re
    15·1 answer
  • Low-viscosity lava a. is most often a cool-temperature lava. b. could logically build a composite volcano. c. has low silica con
    14·1 answer
  • Most persons are of the belief that the old time hard or solid iron cars are much safer in collisions than the new model softer
    11·1 answer
  • Which wave has a longer wavelength?
    6·1 answer
  • Changing which factor would NOT have an influence on the kinetic energy of a moving van loaded with 100 kg bags mulch of with a
    8·2 answers
  • Anyone help me do this question.. am giving the brainliest
    6·1 answer
  • An electron has a charge of - 1.6x10 ^ - 19 C and a proton has a charge of 1.6x 10 ^ - 19 C . In a hydrogen atom, the distance b
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!