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Soloha48 [4]
3 years ago
8

Several motorboats with the same mass are used in an experiment. The forces of the different motors versus their accelerations a

re graphed. What is the y-intercept of this graph? (1point) Does anyone know the answer?
Physics
1 answer:
Yuliya22 [10]3 years ago
7 0

Answer:

C. the velocity

Explanation:

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Longitudinal sound waves cannot propagate through
strojnjashka [21]

Answer:

A vacuum

Explanation:

Sound waves are examples of mechanical waves. Mechanical waves are waves which are transmitted through the vibrations of the particles in a medium.

For example, sound waves in air consist of oscillations of the air particles, which vibrate back and forth (longitudinal wave) along the direction of propagation of the wave itself.

Given this definition of mechanical wave, we see that such a wave cannot propagate if there is no medium, because there are no particles that would oscillate. Therefore, among the choices given, the following one:

a vacuum

represent the only situation in which a sound wave cannot propagate through: in fact, there are no particles in a vacuum, so the oscillations cannot occur. In all other cases, instead, sound waves can propagate.

3 0
3 years ago
Can enter through any cavity lined with mucus membranes
Gre4nikov [31]

Answer:

mucus

Explanation:

7 0
3 years ago
Which choice displays the effects of quantum mechanics? check all that apply
xxMikexx [17]

Answer:

A,B,C,D,F,G

Explanation:

Edge 2021

8 0
2 years ago
Describe the importance of the hubble telescope in a short paragraph. QUICK PLEASE HELP ASAP
gulaghasi [49]
The Hubble Telescope or Hubble Space Telescope (HST) is designed to take images found within the solar system. It is a low-orbit kind of telescope that helped a lot of scientists in proving some theories in astrophysics and the dimensions of the Universe. It was launched in 1990s and since then has been in space taking up good quality images that would help scientists learn more from space explorations.
8 0
3 years ago
A circuit has a voltage drop of 12.0 V across a 30.0 resistor that carries a current of 0.400 A. What is the power used by the r
Aloiza [94]

Option ( c ) is correct.

Using the formula for power

P= i^2 R

P= power

i= current= 0.4 A

R= resistance= 30 ohm

so power= (0.4)² (30)

Power=4.8 W

7 0
3 years ago
Read 2 more answers
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