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4 years ago

Although there are different ways to approach a scientific investigation, all scientific investigations begin with some sort of

2 answers:

8 0

All scientific investigations begin with a scientific* Question. To go into a bit more detail, the question can not be bias or opinionated. I must be able to be proven or disproven through an experiment. Also the question can not be an “obviously already known” question or yes/no. For Bad examples, “Are Dogs Canines?” or “Is chocolate or vanilla the best flavor?”
A good question may be “How long will it take the ‘s’ on a Skittle to dissolve?”
••Hope I helped :) have a nice day!!

Mamont248 [21]4 years ago

7 0

Answer: hypothesis or guess

(pls mark me brainliest)

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Is an electrical current which comes from a battery

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3 years ago

Which of these IS an example of balanced forces? A. a book on a shelf B. air rushing out of a balloon C. rolling over and fallin

babunello [35]

Forces are balanced when net force on the object is zero or the sum of all force on the object is zero.

For book kept on a shelf, the weight of the book in down direction is balanced by the normal force on the book by the shelf. hence the book kept on a shelf is an example of balanced force.

In case of air rushing out of balloon , the balloon experience a net force by the air coming out of it.

rolling over and falling off the bed , the object falls under gravity force.

a car speeding up accelerates. since it accelerates , it has net force on it.

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3 years ago

Which are characteristics of electromagnetic waves?check all that apply.

emmainna [20.7K]

Correct choices are marked in bold:

travel in straight lines and can bounce off surfaces --> TRUE, normally electromagnetic waves travel in straight lines, however they can be reflected by objects, bouncing off their surfaces

travel through space at the speed of light --> TRUE, all electromagnetic waves in space (vacuum) travel at the speed of light, $c=3\cdot 10^8 m/s$ )

travel only through matter --> FALSE; electromagnetic waves can also travel through vacuum

travel only through space --> FALSE, electromagnetic waves can also travel through matter

can bend around objects --> TRUE, this is what happens for instance when diffraction occurs: electromagnetic waves are bended around obstacles or small slits

move by particles bumping into each other --> FALSE, electromagnetic waves are oscillations of electric and magnetic fields, so no particles are involved

move by the interaction between an electric field and a magnetic field --> TRUE, electromagnetic waves consist of an electric field and a magnetic field oscillating in a direction perpendicular to the direction of motion of the wave

8 0

4 years ago

Read 2 more answers

Let's return to our friend the sphere, with surface charge density σ(θ, f) = σ0sinθcos2f . Find the net polarization of this sph

pochemuha

Answer:

Explanation:

solution solved below

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3 years ago

What common household substances can turn blue litmus paper red?

Reil [10]

There is a few things. The things that turn it red is acids.

Properties of acids include:
*Tasting sour
*Conduct electricity
*Corrosive

A few household acids would be lemons, vinegar, salt, and some sodas.

5 0

3 years ago