Before you leave for a trip, you should check

1 answer:

4 0

-- make sure you have enough money;

-- make sure you arranged for someone to feed the dog and the goldfish;

-- make sure you turned off the faucets and the stove burners.

You might be interested in

Which of the following types of reactions would decrease the entropy within a cell?

kifflom [539]

Answer:

dehydration reactions

7 0

3 years ago

After giving an intense performance, a confused and disoriented ﬂautist has wandered onto the motorway! They are playing a con

leva [86]

This is a Doppler effect. Generally, if you move to a frequency source, you would detect an increase in frequency and when you move away from a source you would detect a decrease.

For this question, before you pass them, you are actually approaching them, so you would hear a higher frequency than the constant 300 Hz they are playing at.

Using the condensed formula:

f ' = ((v <u>+</u> vd)/(v <u>+</u> vs)) * f

Where: vd = Velocity of the detector.
   vs = Velocity of the frequency source.
   v = Velocity of sound in air.
   f ' = Apparent frequency.
   f = Frequency of source.

v = 343 m/s, vd = detector = 27.8 m/s, vs = velocity of the source =0. (the flautists are not moving).
f = 300 Hz.

There would be an overall increase in frequency, so we maintain a plus at the numerator and a minus at the denominator.

f ' = ((v + vd)/(v - vs)) * f

f ' = ((343+ 27.8)/(343 - 0)) * 300
   = (370.8/343)* 300 = 324.3

Therefore frequency before passing them = 324.3 Hz.

Cheers.

4 0

3 years ago

What law of motion is that representing ?

Naya [18.7K]

Explanation:

answer is the 3rd law of motion

I hope it will be helpful for you

please mark as brainest answer

thank you

6 0

4 years ago

4720 kj of energy are supplied to a material in order to raise its temperature by 65k. if the specific heat capacity of the mate

jeka57 [31]

The mass of material is 26.6 Kg

Given:

Q = 4720 KJ

Change in Temperature (AT) = 65 K

Specific heat capacity of material (c) = 2730 J K Kg*K

The relation between Q, AT, c and m are related by following formula: Q=m* c*∆T,

Plugging value in heat formula:

4720KJ = m* 2730 J/Kg*K * 65K

4720KJ = m * 177450J/kg

Converting 177450 J/kg to Kg/KJ

177450 J/kg*1KJ/1000J = 177.450KJ/kg

Dividing both side by 177.450KJ/kg

4720KJ/177.450KJ/Kg = m*177.450KJ/Kg÷ 177.450KJ/Kg

Hence, the mass of material = 26.6 Kg

Learn more about Mass here:

brainly.com/question/19385703

#SPJ4

6 0

2 years ago

A transverse wave is set up in a very long string. The oscillator is set at 20.0 Hz, and the wave speed is 78 m/s. The amplitude

Sedbober [7]

To solve this problem we must apply the concepts related to Tangential Acceleration based on angular velocity and acceleration, and therefore, we must also calculate angular velocity based on the given frequency. For all these problems we will take the Units to the International System. The maximum acceleration would then be defined as,

$a_{max} = \omega^2 A$