An example of an exothermic reaction is:

Physics

1 answer:

elena55 [62]3 years ago

6 0

Answer:

Explanation:

Exothermic refers to a RELEASE of energy through a reaction(usually chemical). When salt dissociates, polar water molecules pull apart ions, releasing energy.

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Arrange the stars based on their temperature. Begin with the coolest star, and end with the hottest star.

Kobotan [32]

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3 years ago

Read 2 more answers

a 2.964 kilogram truck strikes a fence at 7.00 meters/second and comes to a stop in 1.9 seconds. what was the average force acti

tangare [24]

10.92N

Explanation:

Given parameters:

Mass of the truck = 2.964kg

velocity = 7m/s

Time = 1.9s

Unknown;

Average force on the car = ?

Solution:

The force acting on the car is a function of its mass and acceleration according the newton's second law of motion.

Force = mass x acceleration

Since acceleration = $\frac{change in velocity}{time}$

Force = mass x $\frac{change in velocity}{time}$

Force = $\frac{2.964 x 7 }{1.9}$

= 10.92N

learn more:

Newton's laws brainly.com/question/11411375

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3 years ago

If the brakes are applied and the speed of the car is reduced to 13 m/s in 17 s , determine the constant deceleration of the car

Svetlanka [38]

Question: Initially, the car travels along a straight road with a speed of 35 m/s. If the brakes are applied and the speed of the car is reduced to 13 m/s in 17 s, determine the constant deceleration of the car.

Answer:

1.29 m/s²

Explanation:

From the question,

a = (v-u)/t............................ Equation 1

Where a = deceleration of the car, v = final velocity of the car, u = initial velocity of the car, t = time.

Given: v = 13 m/s, u = 35 m/s, t = 17 s.

a = (13-35)/17

a = -22/17

a = -1.29 m/s²

Hence the deceleration of the car is 1.29 m/s²

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