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
bogdanovich [222]
2 years ago
8

Which general equation represents an exothermic reaction?

Physics
1 answer:
NeTakaya2 years ago
8 0

Answer:

A

Explanation:

The general equation which represents an exothermic reaction is :

<u>reactants - energy → products</u>

<u />

This is because on undergoing an exothermic reaction, heat energy is released, which means that the initial energy of the reactants is lost (subtracted).

You might be interested in
Than a cool
Rashid [163]
Alnilam is the brightest star

Absolute brightness is how bright the star actually is. Apparent brightness is how bright the star looks.

Factors that influence how bright a star looks is distance. The fact that Alnilam has the same apparent brightness of the other two stars even though it is farther away, means that it is brighter.

7 0
3 years ago
You carry a 5 kg sack of potatoes across the store for 5 minutes, and you wait in line holding it for 30 seconds before you get
ludmilkaskok [199]

Answer:

The only work done is when the person lifts the sack over a distance, W = 78.48 [N]

Explanation:

We have to remember the definition of work, which tells us that work is the result of a force by a distance, we must apply this concept in each of the movements of the person in the problem described.

W = F * d

where:

F = force [N]

d = distance [m]

The force is given by the producto of the mass by the gravity.

F = 5 * 9.81 = 49.05 [N]

W = 49.05 * 1.6 = 78.48 [N]

3 0
3 years ago
Captain John Stapp is often referred to as the "fastest man on Earth." In the late 1940s and early 1950s, Stapp ran the U.S. Air
valentina_108 [34]

Answer:

The sled needed a distance of 92.22 m and a time of 1.40 s to stop.

Explanation:

The relationship between velocities and time is described by this equation: v_f=v_0+a*t, where v_f is the final velocity, v_0 is the initial velocity, a the acceleration, and t is the time during such acceleration is applied.

Solving the equation for the time, and applying to the case: t=\frac{v_f-v_0}{a}=\frac{0\frac{m}{s}-282\frac{m}{s}  }{-201\frac{m}{s^2} }=1.40s, where v_f=0\frac{m}{s} because the sled is totally stopped, v_0=282\frac{m}{s} is the velocity of the sled before braking and, a=-201\frac{m}{s^2} is negative because the deceleration applied by the brakes.

In the other hand, the equation that describes the distance in term of velocities and acceleration:x_f-x_0=v_0*t+\frac{1}{2}*a*t^2, where x_f-x_0 is the distance traveled, v_0 is the initial velocity, t the time of the process and, a is the acceleration of the process.

Then for this case the relationship becomes: x_f-x_0=282\frac{m}{s} *1.40s+\frac{1}{2}(-201\frac{m}{s})*(1.40s)^2=94.22m.

<u>Note that the acceleration is negative because is a braking process.</u>

4 0
3 years ago
Read 2 more answers
What does it mean for a reaction to be endothermic? choose 2 of the following
Rainbow [258]

Answer: I would choose options C and D

Explanation:

3 0
2 years ago
Read 2 more answers
As we move ACROSS the periodic table in a row, the electronegativity increases decreases
trasher [3.6K]
It increases across a period but it decreases down a group.
6 0
3 years ago
Read 2 more answers
Other questions:
  • A quantity of gasoline injected into car engine has a potential energy of 100J. All of this energy is not converted into useable
    14·1 answer
  • An fm radio station broadcasts at a frequency of 97 mhz . what inductance should be paired with a 7.0 pf capacitor to build a re
    10·1 answer
  • Exercise provides a healthy outlet for feelings, which helps improve
    6·1 answer
  • When light behaves like a particle, it is called a ???​
    9·2 answers
  • A cylinder that is 20 cm tall is filled with water. If a hole is made in the side of the cylinder 5 cm below the top level, how
    14·1 answer
  • A vector has components Ax = 12.0 m and Ay= 5.00 m. What is the angle that vector A makes with the x-axis?a. 67.4ob. 32.6oc. 22.
    6·1 answer
  • Stereotypes are widely held beliefs that people have certain traits because
    14·1 answer
  • What is (Fnet3)x, the x-component of the net force exerted by these two charges on a third charge q3 = 55.0 nC placed between q1
    12·1 answer
  • Fill in the blanks in the following statements:
    7·1 answer
  • Which of these structures is an architect most likely to design?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!