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3 years ago

Could someone help me with this please?

Physics

2 answers:

ycow [4]3 years ago

6 0

Answer:

you could measure several properties of

the unknown liquid and compare them with the properties of known

substances. You might observe and measure such properties as color,

odor, texture, density, boiling point, and freezing point.

ratelena [41]3 years ago

6 0

Answer:

Compare the various physical properties of the substance.

Explanation:

One way is to compare the various physical properties of the substance. Let's take a look at those:

Identify the physical identity of each substance. That is, it the substance solid, or powder, or granulated (in small granules)

Next, the color of the substance will also help as a physical property. For example, is the substance bright, shiny, dull in color, etc.

Another property of the test can be the electrical conductance. For instance, does the substance conduct electricity or not.

Finally, test if the substance dissolves in a solvent, say water in this case. If it dissolves, it is likely to be a soluble salt. If not, then it is likely to be an insoluble salt.

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You observe a star cluster with a main-sequence turn-off point at spectral type G2 (the same spectral type as the Sun). What is

Goryan [66]

Answer i dont even know im just putting this cus id ont care

Explanation:

3 0

2 years ago

A boy finds an abandoned mine shaft in the woods, and wants to know how deep the hole is. He drops in a stone, and counts 4 seco

oee [108]

S=(0x4)+(0.5x4.81x4x4)
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(My brain hurts now) :P Good Luck!

4 0

3 years ago

The magnitude of the net force versus time graph has a rectangular shape. Often in physics geometric properties of graphs have p

Blizzard [7]

Answer:

True

Explanation:

In this particular case, the area of the graph represents the impulse.

In fact, impulse is defined as the change in momentum of an object:

$I=\Delta p$

Moreover, impulse is also defined as the product between the magnitude of the force acting on an object and the duration of the collision:

$I=F\Delta t$

If we plot a graph of the force versus the time, if the force is constant then this graph will have a rectangular shape, and the area under the graph will simply be the product

$F\cdot \Delta t$

which corresponds to the definition of impulse.

8 0

3 years ago

A proton in a cyclotron is moving with a speed of 2.97×107 m/s in a circle of radius 0.568 m. 1.67 × 10−27 kg is the mass of the

vivado [14]

Answer:

B = 0.546 T, F = 2.59 10⁻¹² N

Explanation:

The magnetic force is

F = q v x B

We can calculate the magnitude of the force and find the direction by the right hand rule

F = q v B sin θ

Let's use Newton's second law

F = m a

Acceleration is centripetal

a = v² / r

We substitute

q v B sin θ = m v² / r

The angle between the field and the radius of the circle is 90º so sin 90 = 1

q B = m v / r

B = m v / q r

Let's calculate ’

B = 1.67 10⁻²⁷ 2.97 10⁷ / (1.60 10⁻¹⁹ 0.568)

B = 0.546 T

The foce is

F = q v B

F = 1.60 10⁻¹⁹ 2.97 10⁷ 0.546

F = 2.59 10⁻¹² N

3 0

3 years ago

Is the answer for h correct

goldfiish [28.3K]

Answer:

yess

Explanation:

good job kgkgjgkvvjcjc

3 0

3 years ago