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
IgorLugansk [536]
3 years ago
15

Questions 14 out of 20

Physics
1 answer:
KiRa [710]3 years ago
4 0

Answer:

B

Explanation:

You might be interested in
A jet plane lands with a velocity of +107 m/s and can accelerate at a maximum rate of -5.18 m/s2 as it comes to rest. From the i
Marrrta [24]

Answer:

20.7 s

Explanation:

The equation to calculate the velocity for a uniform acceleration a, time t and initial velocity v₀:

v = a*t + v₀

Solve for t:

t = (v - v₀)/a

3 0
2 years ago
If you find two stars with the same Right Ascension, are they necessarily close together in the sky? Why or why not?
shepuryov [24]

In space, spatial coordinates can be roughly divided into measures of Right ascension and declination. The declination is measured in degrees while the ascent is measured in hours, minutes, seconds. When you have objects in space such as those of the characteristics presented we will have to they are not necessarily close together in the sky because we can find two stars on the same right ascension but on different declination lines (Which means they can be very far apart from each other)

8 0
2 years ago
How is high temperature achieved by concave mirror?
tensa zangetsu [6.8K]

A concave mirror is used in the design of solar furnaces because they converge the parallel sunrays at a point. This helps to increase the temperature of the furnace.

3 0
2 years ago
Read 2 more answers
Una motocicleta viaja con una velocidad constante de 72m/s calcula su velocidad en km/h
Juliette [100K]

Answer:

Entonces la velocidad de la motocicleta es 259.18 \frac{km}{h}

Explanation:

La regla de tres simple es una operación que ayuda a resolver rápidamente problemas de proporcionalidad, teniendo tres valores conocidos y una incógnita.

Dos magnitudes son directamente proporcionales cuando al multiplicar o dividir una de ellas por un número, la otra queda multiplicada o dividida respectivamente por el mismo número. En otras palabras, dos magnitudes son directamente proporcionales si cuando aumenta una magnitud, también lo hace la otra en la misma proporción o cuando disminuye una magnitud, también lo hace la otra en la misma proporción.

Para resolver una regla directa de tres cuando las magnitudes son directamente proporcionales, se debe seguir la siguiente fórmula:

a ⇒ b

c ⇒ x

Entonces x=\frac{c*b}{a}

La regla directa de tres simple es la regla que se aplica en este caso donde hay un cambio de unidades. Para realizar esta conversión de unidades, primero debe saber que 1 m = 0.001 km. Entonces, si 0.001 km es 1 m, ¿cuántos kilómetros son 72 m?

km=\frac{72 m*0.001 km}{1 m}

km=0.072

Entonces:

72\frac{m}{s} =\frac{72 m}{s} =\frac{0.072 km}{s}

Siendo 1 s=0.0002778 h:

72\frac{m}{s} =\frac{72 m}{s} =\frac{0.072 km}{s}=\frac{0.072 km}{0.0002778 h}=259.18 \frac{km}{h}

<u><em>Entonces la velocidad de la motocicleta es </em></u>259.18 \frac{km}{h}<u><em></em></u>

8 0
2 years ago
Determine the radial acceleration of the ultracentrifuge using calculations
Dmitry [639]

When something moves on a round track, the guidance of the something's velocity must continually switch. A switching velocity means that there must be an acceleration. This acceleration is horizontal to the guidance of the velocity. This is said as “the radial acceleration”, or “centripetal acceleration” ("centripetal" means "center searching"). The “radial acceleration” is equal to “the square of the velocity”, divided by “the radius of the circular path of the object”. The unit of the “centripetal acceleration” is m/s².

\text { Centripetal acceleration }=\frac{\text {velocity}^{2}}{\text {radius of motion}}

\mathrm{a}_{\mathrm{rad}}=\frac{V^{2}}{r}

where,

\text { and }=\text { radial, or centripetal, acceleration }(\mathrm{m} / \mathrm{s} ^2)

"v" = "velocity" (m/s) and "r" = "radius of motion of the object" (m)

3 0
3 years ago
Other questions:
  • Across a horizontal distance of 25 feet, a roller coaster has a steep drop. The height of the roller coaster at the bottom of th
    10·2 answers
  • Why is traveling between the stars (by creatures like us) difficult?
    6·1 answer
  • Is the earth's gravitational force on the sun larger than, smaller than, or equal to the sun's gravitational force on the earth?
    6·1 answer
  • A 30 kg wooden box sits on a smooth concrete floor.
    7·1 answer
  • A passenger in a car moving at a 40 m/s is not moving when which frame reference is used?
    6·1 answer
  • Write the percent as a fraction or a mixed number in simplest form. <br><br><br> 7%
    13·1 answer
  • I need help answering these questions! Please!
    7·1 answer
  • Goals can be big or small? Question 1 options: True False
    12·1 answer
  • What does red shift tell about the movement of a galaxy?​
    7·1 answer
  • A deuteron particle consists of one proton and one neutron and has a mass of 3.34x10^-27 kg. A deuteron particle moving horizont
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!