3 years ago

Two or more simple machines working together make up a

Physics

1 answer:

Gekata [30.6K]3 years ago

7 0

Complex machine, or compound machine

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A 3-liter container has a pressure of 4 atmospheres. The container is sent underground, with resulting compression into 2 L. App

monitta

Answer:

6 atm

Explanation:

PV = PV

(4 atm) (3 L) = P (2 L)

P = 6 atm

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3 years ago

Do you think humans are messing up the world's balance between organisms? Explain.

leva [86]

Answer:

yes i do becuase humans are here but by being here they disrupt the structure of plants and animals.

Explanation:

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2 years ago

To give an idea of sensitivity of the platypus's electric sense, how far from a 80nC n C point charge does the field have this m

SVETLANKA909090 [29]

The question is incomplete. The complete question is :

A platypus foraging for prey can detect an electric field as small as 0.002 N/C.

-To give an idea of sensitivity of the platypus's electric sense, how far from a +80nC point charge does the field have this magnitude?

Solution :

Given electric field, E = 0.002 N/C

Charge, Q = + 80 nC

$\therefore E = \frac{kQ}{R^2}$

or $R^2=\frac{kQ}{E}$

$R^2=\frac{9\times 10^9 \times 80 \times 10^{-9}}{0.002}$

R = 600 m

This is the distance of the charge from the point of observations.

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2 years ago

Qual a capacidade térmica de um objeto que, ao receber 10000 cal de energia, tem sua temperatura elevada de 25°C para 75°C?

Stolb23 [73]

Answer:

$200 cal/^{\circ}C$

Explanation:

When heat energy is supplied to an object, the temperature of the object increases according to the equation:

$Q=C\Delta T$

where

Q is the heat supplied

C is the heat capacity of the object

$\Delta T$ is the change in temperature

In this problem we have:

$Q=10,000 cal$ is the energy supplied

$\Delta T=75C-25C=50C$ is the change in temperature of the object

Therefore, the heat capacity of the object is:

$C=\frac{Q}{\Delta T}=\frac{10,000}{50}=200 cal/^{\circ}C$

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2 years ago