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olga55 [171]
3 years ago
9

DUE TONIGHT 50 POINTS

Physics
2 answers:
Fudgin [204]3 years ago
7 0
F = m a
13 = 6.5 a

a = 2 m/s²

Vf = Vi + a t
Vf = 2.5 + 2(2.1)
Vf = 2.5 + 4.2
Vf = 6.7 m/s

Answer is C
aleksandrvk [35]3 years ago
6 0
The answer to this question is c
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2 questions: Are seismic waves mechanical or electromagnetic waves, and are seismic waves transverse or compressional waves?
pashok25 [27]
Q. Are seismic waves mechanical or electromagnetic waves?

A. Seismic waves are mechanical waves.


Q. Are seismic waves transverse or compressional waves?

A. Seismic waves are compressional waves.
4 0
4 years ago
¿Porque las medidas arbitrarias no se pueden estandarizar y usar en todos los paises?
Oksi-84 [34.3K]

Answer:

<em>Explicación completa más abajo</em>

Explanation:

<u>Estándares de Medición </u>

En física, química y otras ciencias exactas usamos magnitudes como el metro, segundo, kilogramo, etc. que son aceptadas internacionalmente y cualquier persona puede dar sus mediciones referidas a esos patrones estandarizados.

Si en algún lugar, alguien decide usar una unidad de medida no estándard, como por ejempl, la distancia entre su dedo meñique y pulgar y le pone un nombre (en mi país lo llamamos 'cuarta'), resulta que esa unidad no es única, pues depende del tamaño de la mano del que mide y de la forma como la estira. Aún asi, la precisión sería muy mala.

Es por eso que debemos ajustarnos a usar los patrones internacionales como el SI para expresar las magnitudes de los fenómenos que estudiamos

7 0
3 years ago
What happens when an objects density is the same as the fluid
Dennis_Churaev [7]

Answer:

Explanation: If an object is exactly the same density as the liquid, it will not move up or down. It will just stay right where it is (unless it is pushed around by water currents). If you put it on the surface, it will remain on the surface

3 0
3 years ago
What is the average for the following set of measurements 3.1 mL, 2.7 mL, 4.6 mL, 1.9mL, 8.7 mL
Oksanka [162]
C. 4.2 mL
3.1+2.7+4.6+1.9+8.7mL=21
there are 5 numbers
21÷5=4.2
6 0
4 years ago
a plane took 3 hours and 33 minutes to finish a journey. if the distance of the journey was 2840 miles at what average speed did
DENIUS [597]

Answer:

<em>The average speed was 800 miles/hour</em>

Explanation:

<u>Average Speed</u>

If an object travels a distance d in a time t regardless of the direction, the average speed is the quotient of the distance over the time:

\displaystyle V=\frac{d}{t}

A plane took 3 hours and 33 minutes to travel d=2840 miles to finish its journey. We will calculate the average speed in miles per hour, thus the time needs to be expressed in hours, and it's given in a mixed unit:

t=3 hours+33 minutes

Since there are 60 minutes in an hour:

t=3 hours+33 /60 hours = 3 hours + 0.55 hours = 3.55 hours

Now calculate the average speed:

\displaystyle V=\frac{2840}{3.55}=800

The average speed was 800 miles/hour

5 0
4 years ago
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