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Ket [755]
3 years ago
9

What does pressure mean

Physics
2 answers:
Tanya [424]3 years ago
4 0
Pressure is a force per unit area.
TiliK225 [7]3 years ago
3 0

Answer:pressure means to put force on something

Explanation: when your bleeding you put pressure to stop the bleeding

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A wave and a pendulum are both oscillators, why isn't a pendulum a wave?
Sladkaya [172]
A pendulum cannot be considered a wave because it is attached to a point, a wave is an object that moves forward towards a certain point. 
5 0
3 years ago
If the capacity of the lungs of an adult were 3.8 L, how many moles of air would the lungs contain at body temperature and atmos
Ahat [919]

Answer:

  • 0.14955  mol

Explanation:

We can solve this problem using the ideal gas law

P \ V = \ n \ R \ T

where P is the pressure, V the volume, n the number of moles, R the ideal gas constant and T the temperature.

We can use the atmospheric pressure as 1 atm, and the body temperature as 36.5 °C, in Kelvin this is:

T_{body} = 36.5 \° C = (36.5 + 273.15) K = 309.65 \ K

The ideal gas constant is:

R = 0.082057 \frac{L \ atm}{ K \ mol}

taking all this in consideration, the number of moles will be:

n = \frac{P \ V}{  R \ T }

n = \frac{1 \ atm * 3.8 \ L  }{ 0.082057 \frac{L \ atm}{ K \ mol} *  309.65 \ K } [/tex]

n = 0.14955 \ mol

3 0
3 years ago
If a car travels 30 kilometers in 2 hours, it’s average speed is?
7nadin3 [17]

Answer:

15km/h

Explanation:

Time taken to complete 30km/h=2 hours=15km/h hence the average speed is 15km/h.

5 0
3 years ago
Echoic sensory memory is used when a lightning bolt flashes across the sky.
Ahat [919]
If the statement above answers whether the statement is true or false, then the answer is false. It is not true that the echoic sensory memory is used when a lightning bolt flashes across the sky because it does not have that kind of capacity. The echoic sensory memory is the one responsible for the auditory information.
6 0
3 years ago
Read 2 more answers
Una persona A tiene cierta cantidad de masa y una persona B tiene la mitad de masa de la persona A ¿como es el peso de B respect
musickatia [10]

Answer:

El peso de la persona B es la mitad del peso de la persona A.

Explanation:

El peso de la persona B puede calcularse con la siguiente ecuación:

P_{B} = m_{B}g   (1)

En donde:

m_{B}: es la masa de la persona B

g: es la gravedad

Dado que la persona B tiene la mitad de la masa de la persona A, tenemos:

m_{B} = \frac{m_{A}}{2}  (2)

En donde:

m_{A}: es la masa de la persona A

Al introducir la ecuación (2) en (1) nos queda:

P_{B} = \frac{m_{A}}{2}g   (3)

Sabemos que el peso de la persona A está dado por:

P_{A} = m_{A}g   (4)

Entonces, al introducir la ecuación (4) en (3) tenemos:

P_{B} = \frac{P_{A}}{2}

Por lo tanto, el peso de la persona B es la mitad del peso de la persona A.

Espero que te sea de utilidad!

5 0
3 years ago
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