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3 years ago

Pls help!! i don’t understand what i am supposed to do.

Physics

1 answer:

liq [111]3 years ago

7 0

Well, my German isn't as sharp as it used to be, but it looks like you're supposed to use the symbols at the top and draw two circuits ... one where the switch is closed and the light is shining, the other where the switch is open and the light is out.

That should be pretty easy for you. Just hook up one battery, one switch, and one light, all in series. Then opening and closing the switch makes the light go on and off.

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You and your lab partner are asked to determine the density of an aluminum bar. the mass is known accurately (to four significan

larisa [96]

The given data is tabulated below

Measurement Method A Method B
-------------------- -------------- --------------
1 2.2 2.703
2 2.3 2.701
3 2.7 2.705
4 2.4 5.811

A graph of the data reveals that 5.811 from measurement B is an outlier, and should be rejected.

Part a: Calculate average density.
Method A:
Avg. density = (2.2+2.3+2.7+2.4)/4 = 2.4 g/cm³
Method B:
Avg. density = (2.703+2.701+2.705)/3 = 2.703 g/cm³

Answer:
Average densities are
2.4 g/cm³ by method A
2.703 g/cm³ by method B, with the outlier removed.

Part b: Calculate the percent error.
The true value is 2.702 g/cm³
Method A:
%error = 100*(|2.4 - 2.702|/2.702) = 11.2%
Method B:
%error = 100*(|2.703 - 2.702|/2.702) = 0.04%

Answer:
The percent error is
11.2 by method A,
0.04% by method B.

Part c:
Method B is more accurate and more precise because its average value is closest to the true value and its %error is extremely small.

3 0

4 years ago

What is one exsample of a closed economy

GuDViN [60]

Answer:

When we talk about closed economy, it means that the economy is self-sufficient. At a closed economy, no imports from the outside are brought inside a nation and no exports are sent out as well

Explanation:

8 0

3 years ago

Read 2 more answers

Which of the following is a compound? Bi Np+Pu RfBh Y

djyliett [7]

First One, Bi (bismuth)

3 0

3 years ago

Which of the following statements is true for ideal gases, but is not always true for real gases?

xxMikexx [17]

Answer:

C. Replacing one gas by another under the same conditions, has no effect on pressure.

Explanation:

Ideal gas:

A gas is treated as an ideal gas if temperature is high and pressure is low.

Kinetic energy for ideal gas given as

$K.E.=\dfrac{3}{2}KT$

So when temperature of gas is increases then Average molecular kinetic energy will also increases.

The size of molecule is negligible as compare to the dimension of container. It mean that volume occupied by molecule is less as compare to the volume of container.

The between molecules is perfectly elastic.

Ideal gas equation

P V = m R T

So the option C is not always true.

4 0

3 years ago

An 8 Ω resistor is connected to a battery. The current that flows in the circuit is 2 A. Calculate the voltage of the battery.

Crank

Here is the highly detailed, arcane, complex, technical form of Ohm's Law that is needed in order to answer this question ===> V = I · R .

Voltage = (current) x (resistance)

Voltage = (2 Ampere) x (8 Ω)

Voltage = 16 volts

7 0

4 years ago