suppose you are testing how the number of batteriesaffects bulb brightness.what heads would you use on the data table

Answers

Answer 1

Answer:    My estimate of brightness,
Number of batteries       on a scale of 1 to 10

   1 very dim
   2 1
   3 1 and 1/2
   4 6
   5 10 for a second, then
   the bulb burned out
   and changed to zero.

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While performing an experiment involving a reaction between two chemicals, the scientist observes that the reaction container has become warm. The observation is an example of:

Answers

Explanation:

In an exothermic reaction, heat is released into the surroundings. In this type of reaction, energy of products is less than the energy of reactants.

In an endothermic reaction, heat is absorbed by the reactant molecules. In this type of reaction, energy of products is more than the energy of reactants.

Therefore, we can conclude that while performing an experiment involving a reaction between two chemicals, the scientist observes that the reaction container has become warm. The observation is an example of exothermic reaction.

When an object is becomes warm its an example of exothermic reaction.

TRUE OR FALSE: with time and pressure, peat turns into lignite, or brown coal.

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True

I hope it's help !

Hey There!

The statement is true, with time and pressure peat does turn into brown coal.

Have A Brainly Day :)

Distinguish between "conduction", "convection" and radiation as related to heat transfer.

Answers

Conduction occurs when a substance is transferring heat via touching.
Convention occurs when the substance being heated begins a cycle of cooling and heating. the heat goes to the opposite side of which the substance is being heated and the substance is cooled on the corresponding side, this cycle continues until the heat source is extinguished.
Radiation occurs when the heat of a substance is being transferred via gas form. Ex: sunburn.

How does the sun cause wind?

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wind is caused by a difference in pressure from one area to another area on the surface of the earth. Air naturally moves from high to low pressure, and when it does, it is called wind. Generally, we can say that the cause of wind is the uneven heating of the earth's surface by the sun.

How is acceleration of the cart related to the amount of force acting on it? the strips of it?

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We know that Newton's Second Law of Motion states that -

$F = ma$

It is clear that acceleration is directly proportional to the Force acting on a body. So, the amount of Force acting on a body is directly proportional to the acceleration, when the mass is constant.

Force on the cart is directly proportional to the acceleration.

This relationship was given be Sir Isaac Newton.

Mathematically ;

F = ma

Where F is force, a is acceleration and m is constant of proportionality , also known as mass.

If a hockey puck slides on a perfectly frictionless surface, it willeventually slow down because of its inertia.

Answers

If the surface is perfectly frictionless AND level ... no ups and downs ... then the puck never slows down or stops. There's nothing to make it do so. (Notice that "perfectly frictionless" means no air resistance either.)

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I'm giving out a lot of points for whoever helps me and answers correctly! 3 questions to answer! Please answer them ALL!!! :D1 - Which of these is a good example of Newton's First Law of inertia?A) A ball sits motionless on the groundB) A ball gathers speed as it rolls downhillC) A ball accelerates as it falls out of a classroom windowD) A ball returns to your hand after you throw it up in the air2 - The space shuttle is located exactly half way between the earth and the moon. Which statement is true regarding the gravitational pull on the shuttle?A) The moon pulls more on the shuttleB) The earth pulls more on the shuttleC) Both are equal due to equal distancesD) Both are equal due to the mass of the shuttle3 - In which situation is the acceleration of the car negative?A) The velocity of the car was 75/h over 4 hoursB) The velocity of the car reduced from 50 km/h to 35 km/h over one minuteC) The velocity of a car increased from 40 km/h to 75 km/h over 15 minutesD) The velocity of a car was 45 km/h at 2:00 pm and at 4:00 pm the velocity of the car was 85 km/h