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polet [3.4K]
3 years ago
12

1) Which of the following would NOT be considered a mechanical wave? (1 point)

Physics
2 answers:
Otrada [13]3 years ago
6 0

1 A  

2 C

3 B  

4 D

you answers

Nitella [24]3 years ago
4 0

1 A

2 C

3 B

4 D


hope this helps your pal abigail

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A test rocket is launched vertically from ground level (y = 0 m), at time t = 0.0 s. The rocket engine provides constant upward
Romashka-Z-Leto [24]

The rocket starts at rest, so its initial velocity is 0. If the burn phase lasts t seconds, then during this interval the rocket's velocity is

v=at\implies a=\dfrac{30\,\frac{\mathrm m}{\mathrm s}}t

and its position is

x=\dfrac12at^2\implies a=\dfrac{2(49\,\mathrm m)}{t^2}

So we have

\dfrac{30\,\frac{\mathrm m}{\mathrm s}}t=\dfrac{2(49\,\mathrm m)}{t^2}\implies t=3.3\,\mathrm s

and the answer is C.

4 0
3 years ago
Explique cómo es que las estrellas emiten una radiación, específicamente qué es lo que sucede a nivel atómico
uysha [10]

Answer:

Las estrellas se forman debido a la unión de pequeños elementos y partículas como el hidrógeno y el helio que experimentan una fusión nuclear en el núcleo debido a la intensa presión para formar un nuevo átomo (como dos hidrógeno que se combinan para formar un átomo de helio) que es un proceso. que requiere una gran cantidad de energía para comenzar, por lo que cada reacción de fusión produce una gran cantidad de energía que puede mantener la reacción y equilibra la fuerza gravitacional que atrae las masas de las partículas hacia el centro de la estrella

A medida que la energía de la estrella se irradia, la superficie de la estrella cede la energía en forma de calor y luz de manera que debido a la alta temperatura de las partículas de los átomos de los elementos se mueven muy rápida y energéticamente para emitir fotones rápidamente. (alta frecuencia) que se ve como el alto brillo de la estrella

Explanation:

3 0
3 years ago
What do you need to calculate the mechanical advantage of a block and tackle? A.resistance force
Degger [83]

I think D is the right answer

God Bless

5 0
3 years ago
Read 2 more answers
If every object that has mass has gravity why do I only notice the gravity of Earth
Nesterboy [21]
There are times where the mass is less than the force of gravity or the gravitational pull. The gravitational pull will overpower the mass of the object, which is why you only notice the force of gravity and not the mass
4 0
3 years ago
A flat circular coil having a diameter of 25 cm is to produce a magnetic field at its center of magnitude, 1.0 mT. If the coil h
tresset_1 [31]

Answer:

The current pass through the coil is 6.25 A

Explanation:

Given that,

Diameter = 25 cm

Magnetic field = 1.0 mT

Number of turns = 100

We need to calculate the current

Using the formula of magnetic field

B =\dfrac{\mu_{0}NI}{2\pi r}

I=\dfrac{B\times2\pi r}{\mu N}

Where, N = number of turns

r = radius

I = current

Put the value into the formula

I=\dfrac{1.0\times10^{-3}\times2\pi\times12.5\times10^{-2}}{4\pi\times10^{-7}100}

I=6.25\ A

Hence, The current passes through the coil is 6.25 A

6 0
3 years ago
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