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3 years ago

What is the difference between a mechanical wave and a non-mechanical wave?.

Physics

1 answer:

Sloan [31]3 years ago

8 0

Answer:

Mechanical waves are waves that need a medium for propagation. Non-mechanical waves are waves that do not need a medium for propagation.

Explanation:

I hope its helped thank you !! ( don't report my asnwer just delete it ) brainlest pls if u can

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An electron is accelerated through 2.40×10³V from rest and then enters a uniform 1.70-T magnetic field. What are(b) the minimum

Korolek [52]

The maximum value of Force is 7.88x $10^{-12}$

The minimum value of magnetic force is 0

Potential V=2.40x $10^{3}$ .

Magnetic field = B = 1.70 T.

we need to find

a) The maximum value of Force

Since the particle is moving from rest, the potential energy change is 2.40x $10^{3}$ ?

Potential Energy= vq= 2,40x $10^{3}$ x (-1.6 x 10x $10^{-19}$ %).

= -8.84x $10^{-16}$

Now this will be equal to 1/2 mv²

= 1/2 mv²= 8.84x $10^{-16}$ .

v=2.903x $10^{7}$ m/s :

Wow Fmax = qvb

=1.6x $10^{-19}$ x2.903x $10^{7}$ x1.70 .

=7.88x $10^{-12}$

b) The minimum value of magnetic force

The minimum Value of magnetic force will be

when sinθ=0

The minimum value is 0

To know more about magnetic field refer to brainly.com/question/13091447

#SPJ4

5 0

2 years ago

Warm air is _____ dense than cold air, and warm air holds _____ moisture than cold air.

trasher [3.6K]

Answer:

Warm air is less dense than cold air, and warm air holds more moisture than cold air.

Explanation:

HOPE THIS HELPS AND HAVE A NICE DAY <3

4 0

2 years ago

•• Your roommate is working on his bicycle and has the bike upside down. He spins the 60-cm-diameter wheel, and you notice that

Y_Kistochka [10]

Answer:

$v=0.57\frac{m}{s}$

$a_c=10.83\frac{m}{s^2}$

Explanation:

We have an uniform circular motion, therefore, the pebble’s speed is given by the distance traveled in a revolution $(2\pi r)$ and the period (T), since this is the time pebble’s takes to complete a revolution:

$v=\frac{2\pi r}{T}$

The period is inversely proportional to the frequency:

$T=\frac{1}{f}$

So, we have:

$v=\frac{2\pi r}{\frac{1}{f}}\\v=2\pi rf\\$

Recall that the radius is the half of the diameter and one revolution per is equal to one Hz:

$v=2\pi (30*10^{-2}m)(3Hz)\\v=0.57\frac{m}{s}$

The centripetal acceleration is defined as:

$a_c=\frac{v^2}{r}\\a_c=\frac{(0.57\frac{m}{s})^2}{30*10^{-2}m}\\\\a_c=10.83\frac{m}{s^2}$

6 0

3 years ago

When changing a tire sized 195/75 R15 to a 5 percent lower profile, the correct tire size would be _____

valentinak56 [21]

Answer and explanation:

When you are changing a car tire, the most important thing is to keep the total diameter as equal as possible.

The total car tire diameter can be calculated as:

$D_{tot orig}=\frac{195 \cdot 75}{2540 \cdot 2}+15''=26.5''$

The profile of this tire is 75 (the higher/taller relation), therefore a 5 percent lower profile would be:

pr=0.95·75=71.25

The problem is that the profiles are normalized and the nearest profile available is 70.

If we take a theorical tire with a profile of 71.25:

$D_{tot orig}=D_{new}\\\frac{195 \cdot 75}{2540 \cdot 2}+15''=\frac{X \cdot 71.25}{2540 \cdot 2}+15''\\X=205.26$

The theorical tire size should be 205/71 R15.

If we look for a real tire size, we should look for a tire with a diameter nearest to 26.5'' and a profile of 70.

The best option for real tire size is: Tire 225/70 R14 (wheel diameter of 26.4'') or 205/70 R15 (wheel diameter of 26.3'').

3 0

4 years ago

What do they need to do to determine what time period Eocene belongs to on the geologic time scale

Norma-Jean [14]

They need to scan a chart on the internet and you know when you find it.

7 0

3 years ago

Read 2 more answers