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Papessa [141]
3 years ago
15

20. Unlike other kinds of liquids, volatile liquids

Physics
1 answer:
Nana76 [90]3 years ago
5 0
What's is the question asking, true or false?
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Which option is an example of a chemical property
lutik1710 [3]

Answer;

-Flammability

Explanation;

-Chemical properties are characteristics of a material that become evident when the material undergoes a chemical reaction or chemical change. It is a substances ability to change into a whole new substance.

-Examples of Chemical Property include flammability, ability to rot, reactivity, ability to tarnish, ability to rust. Iron, for example, combines with oxygen in the presence of water to form rust.

5 0
3 years ago
Read 2 more answers
A man pulled a 13.0 kg object 11.8 cm vertically with his teeth. (a) How much work (in J) was done on the object by the man in t
jonny [76]

Answer:

(a)The work done by the man is -15.03J.

(b)The force exerted on the object is 127.4N.

Explanation:

Mass of the object pulled by the man is -13kg

Object is lifted 11.8 cm vertical with his teeth it means (displacement = +11.8cm = +0.118m)

Acceleration due to gravity is 9.8 \mathrm{m} / \mathrm{s}^{2}

(a) <u>Calculating the work done</u>:

Work done = mgh

Where "m" is mass of an object, "g" is acceleration due to gravity and "h" is the displacement.

\text { Work }=-13 \times 9.8 \times(+0.118 \mathrm{m})

\text { Work }=-15.03 \mathrm{J}

The work done by the man is -15.03J.

(b) <u>Calculating the force</u>:

Probably the man and the object are close to the exterior of the earth. If the rigidity required to maintained the object of consistent velocity interior the gravitational field of the earth is \mathrm{g}=9.8 \mathrm{m} / \mathrm{s}^{2}

Thus the weight of the object is balanced by the force of the man's teeth on the object. That is

F = mg

\mathrm{F}=13 \times 9.8

F = 127.4N

The force exerted on the object is 127.4N.

4 0
3 years ago
In an electrical circuit 200mC of charge flows through a 50kohm resistor in 90 seconds. What is the power
ss7ja [257]

Answer: 0.2464\ W

Explanation:

Given

Charge Q=200\ mC

Resistance R=50\ k\Omega

Time t=90\ s

Charge is the amount of current flown in a particular time

Q=It\\\Rightarrow 200\times 10^{-3}=I\times 90\\\\\Rightarrow I=\dfrac{200\times 10^{-3}}{90}\\\\\Rightarrow I=2.22\times 10^{-3}\ A

Power is the given by P=I^2R

Insert values

\Rightarrow P=\left(2.22\times 10^{-3}\right)^2\times 50\times 10^3\\\\\Rightarrow P=246.42\times 10^{-3}\ W\\\\\Rightarrow P=0.2464\ W

The power is in the circuit is 0.2464\ W.

8 0
3 years ago
Which of the following describes the oscillation of the medium in transverse waves?
svp [43]

Wave An oscillation that transfers energy and momentum.

Mechanical wave A disturbance of matter that travels along a medium. Examples include waves on a string, sound, and water waves.

Wave speed Speed at which the wave disturbance moves. Depends only on the properties of the medium. Also called the propagation speed.

Transverse wave Oscillations where particles are displaced perpendicular to the wave direction.

Longitudinal wave Oscillations where particles are displaced parallel to the wave direction.

In a transverse wave, perpendicular to the direction the wave travels, the particles are displaced. Examples of transverse waves include on a string vibrations and on the water surface ripples. By moving the slinky up and down vertically, we can create a horizontal transverse wave.

In a longitudinal wave, parallel to the direction the wave travels, the particles are displaced. Compressions that move along a slinky are an example of longitudinal waves. By pushing and pulling the slinky horizontally, we can make a horizontal longitudinal wave.

Common mistakes and misconceptions

Sometimes people forget that wave velocity is not the same as the velocity of the medium particles. How fast the disturbance travels through a medium is the wave speed. The velocity of the particle is how fast a particle moves about its position of equilibrium.

6 0
3 years ago
What are fossil fuels and are there alternatives to using fossil fuels to get the power we need?
N76 [4]

Answer:

They can give us information and energy.

Explanation:

Fossils can be burned to give us energy and fuel. They can also give us information about the earths history.

5 0
3 years ago
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