1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
zvonat [6]
3 years ago
5

Three science questions help please!

Physics
1 answer:
Nimfa-mama [501]3 years ago
4 0
6. D
7. D
8. B
let me know if you need clarification
You might be interested in
• 500 waves pass by in 2 second. These waves have a wavelength of 6
tamaranim1 [39]

Answer:

6/2times500=1500

Explanation:

s = d/t which means speed equals distance divided by time.

7 0
3 years ago
A mass is hung from a spring and set in motion so that it oscillates continually up and down. The velocity v of the weight at ti
otez555 [7]

To solve the problem it is necessary to identify the equation in the manner given above.

This equation corresponds to the displacement of a body under the principle of simple harmonic movement.

Where,

\xi = Acos(\omega t +\phi)

PART A) Our equation corresponds to

y = -5cos(4\pi t)

Therefore the value of omega is equivalent to that of

\omega = 4\pi

From the definition we know that the period as a function of angular velocity is equivalent to

T = \frac{2\pi}{\omega}

T = \frac{2\pi}{4\pi}

T = \frac{1}{2}

This same point is the equivalent of the maximum point of the speed that the body can reach, since the internal expression of the cos\thetaIs equivalent to . So the maximum speed that the body can reach is,

y = -5cos(4\pi t)

y = -5cos(4\pi (1/2))

y = -5*(-1)

y = 5

Therefore the maximum felocity will be 5ft / s

PART B) The period of graph is the time taken to reach from one maximum point to next point maximum point, then

t = \frac{T}{2} = \frac{1}{2}*\frac{1}{2}

t = \frac{1}{4}s

5 0
3 years ago
Does air play a role in the propagation of the human voice from one end of a lecture hall to the other
love history [14]

Answer: Yes

Air serves as a propagation medium.

Explanation:

Propagation of sound wave require a medium for transmission. Sound is produced by vibrating objects, The matter or substance through which sound is transmitted is called a medium. It can be solid, liquid or gas. Therefore to propagate sounds (human voice) from one end of a lecture hall to the other we need a propagation medium which is air. Air serves as a propagation medium.

4 0
3 years ago
which criteria are responsible for deciding whether a heterogeneous mixture is a colloid or a suspension
ad-work [718]
I think you forgot to give the options along with the question. I am answering the question based on my knowledge and research. The criteria responsible for deciding whether a heterogeneous mixture is a colloid or a suspension is whether the <span>particles remain suspended for an extended period of time. I hope it helps you.</span>
6 0
3 years ago
As a 2.0-kg block travels around a 0.50-m radius circle it has an angular speed of 12 rad/s. The circle is parallel to the xy pl
Lynna [10]
It's 60.... i have used the formula
L=r^2mw
and didn't use the value 0.75...
6 0
3 years ago
Read 2 more answers
Other questions:
  • What makes astronomers think that impact rates for the Moon must have been higher earlier than 3.8 billion years ago?
    15·1 answer
  • The coriolis effect ________. keeps earth from spinning too fast is caused by the moon results in ice and dark at the poles in w
    11·1 answer
  • PLEASE HELP WILL MEDAL !!!
    14·2 answers
  • For the graph above, what is the independent variable? What is the dependant variable?
    10·1 answer
  • Which statements about cirrus clouds are true? Choose all answers that are correct. A. Cirrus clouds form high in the sky. B. Ci
    14·2 answers
  • A large stick is pivoted about one end and allowed to swing back and forth with no friction as a physical pendulum. The mass of
    6·1 answer
  • Please answer the question and show your working clearly.
    10·1 answer
  • In the diagram, q1 = -3.33*10^-9 C and
    9·1 answer
  • Write down 2 differences between electrical conductors and electrical insulators.
    7·2 answers
  • Isim sehir eyşa<br> iiiiiiiimi iiiiooiiii​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!