What is the mass of an object if its potential energy is 800 J and it is 2.0 m above the ground?

3. Students measured the mass of the reactants and products for a combustion reaction they observed.

coldgirl [10]

Answer:

A. Students made a measurement error, because ending with more products is impossible.

Explanation:

The law of conversation of matter tells us that in a chemical reaction, matter is never created or destroyed, it's simply converted from one form to another. So the mass of reactants should always equal the mass of the products in a chemical reaction. If there is excess mass in the product, the students have made an error of some kind.

4 0

3 years ago

Please help! What does implementing mean?

Y_Kistochka [10]

Implementing means to add something ie. "It's cool that you were able to implement the gummys into the root beer float"

4 0

3 years ago

Test Name: GR8_Sci_U07_USA_FY20

kumpel [21]

The distance from the star to the Earth

Explanation:

The absolute brightness of a star is a measure of the intrinsec luminosity of the star, i.e. it does not depend on the distance of the star from the Earth.

In other word, the absolute brightness is a measure of the luminosity of a star if all stars were placed at the same distance from Earth.

On the other hand, the relative brightness of a star is a measure of its luminosity as observed on Earth, therefore it does depend on the distance of the star from the Earth: the farther the star is, the more its luminosity will decrease, and vice-versa.

The star's absolute brightness, therefore, depends only on the characteristics of the star itself, namely:

- The absolute magnitude of the star

- The rate at which the star produces energy via nuclear fusion

- The rate at which the star releases energy via electromagnetic radiation

Therefore, the only factor that does NOT change if the absolute brightness of a star changes is

- The distance from the star to the Earth

Learn more about planets and stars:

brainly.com/question/2887352

brainly.com/question/10934170

#LearnwithBrainly

8 0

3 years ago

A source emits a sound and is represented by the red dot in this map. Four people are located around the source, and the circles

Monica [59]

Explanation:

A source Emits a sound and is represented by the red dot in this map. Four people are located and the source and the circle represent the sound wave.

As the source moves west which person hears the highest pitch

person B

8 0

4 years ago

Read 2 more answers

Convert 94.63 mg/L to g/ML showing all work with units. Please help ASAP. Thank you!!!

IrinaK [193]

94.63 mg/L as a unit of density is equivalent to 9.463 × 10-⁵ g/mL.

<h3>What is density?</h3>

Density is a measure of the mass of matter contained by a unit volume.

Density of a substance can be calculated by dividing the mass of the substance in grams by its volume in milllilitres. This means that the unit of measurement for density is g/mL.

However, the conversion factor of g/mL to mg/L is as follows:

1 gram/millilitre = 1000000 milligrams/litre

94.63 mg/L = 94.63 ÷ 1000000

= 9.463 × 10-⁵ g/mL

Therefore, 94.63 mg/L as a unit of density is equivalent to 9.463 × 10-⁵ g/mL.

Learn more about density at: brainly.com/question/15164682

#SPJ1

8 0

2 years ago