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Reil [10]
3 years ago
8

Same object differs in water than in air?

Physics
1 answer:
Ipatiy [6.2K]3 years ago
8 0

Answer:

Yes

Say that I have a bomb that is triggerded when it is in water. In air the bomb does not change, but in water it blows up.

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Which of the following is a definite indicator of a chemical change?
Andrew [12]

Answer:

Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color chage, formation of a precipitate, formation of a gas, odor change, temperature change.

Explanation:

3 0
4 years ago
8. A boy pulls a 20.0-kg box with a 140-N force at 30° above a horizontal surface. If the coefficient of kinetic friction betwee
LenaWriter [7]

0.280 m is the correct answer

8 0
3 years ago
The volleyball team practiced their serves, rotations, and ________. Which choice completes the sentence with correct parallel s
Phoenix [80]

Answer

Correct Answer is a.(spikes)

Explanation:

option a is correct because here serves, rotation and spikes all the three words are using as object.

The volleyball team practiced their serves, rotations, and spikes.

option b cannot be correct because here spiking is used as a verb and sentence(The volleyball team practiced their serves, ) is in past indefinite form and we cant use word spiking here because this form of verb is used in continues form of sentences only.

Option c cannot be correct as because in this option ""spikes the ball" spikes is used as a verb  which can be used in present indefinite form of sentence only but here sentence is in past indefinite form.

Again option d cannot be correct because  in this option ""spikes over the net" spikes is used as a verb  which can be used in present indefinite form of sentence only but here sentence is in past indefinite form.

5 0
4 years ago
Read 2 more answers
The battery charger for an mp3 player contains a step-down transformer with a turns ratio of 1:29, so that the voltage of 120 v
kifflom [539]
Transformer contains two coils: primary and secondary. They allow change of voltage to lower or higher value. In first case we have step-down and in second case we have step-up transformer.

Formula used for transformer is:
\frac{ N_{1} }{N_{2} } = \frac{ V_{1} }{V_{2} }

Where:
N1 = number of turns on primary coil
N2 = number of turns on secondary coil
V1 = voltage on primary coil
V2 = voltage on secondary coil

In a step-down transformer primary coil has more turns than secondary coil. So the ratio 1:29 means that for each turn on secondary coil we have 29 turns on primary coil.

We can solve the equation for V2:
{V_{2}}=\frac{ V_{1}{N_{2} }  }{N_{1} } \\  {V_{2}}=\frac{ 120*{x }  }{29x } \\  {V_{2}}=4.14V

Secondary coil provides voltage of 4.14V.
8 0
4 years ago
A wave has angular velocity 12 rad/sec and maximum displacement X cm (X= last two digit [1] of your student’s ID). Calculate the
Naily [24]

Answer:

a=1440\ m/s^2

Explanation:

Given that,

The angular velocity of a wave, \omega=12\ rad/s

The maximum displacement of the wave, A = 10 cm (let)

The maximum acceleration of the wave is given by :

a=-A\omega^2

Put all the values,

a=10\times 12^2\\\\a=1440\ m/s^2

So, the maximum acceleration of the wave is equal to 1440\ m/s^2.

4 0
3 years ago
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