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2 years ago

What three steps can you take to ensure your measurments are both accurate and precise?

1 answer:

Ivan2 years ago

8 0

First, use a high-quality measurement tool. Next, measure carefully. Finally, repeat the measurement a few times. Hope it helps!

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Why can you plant plants, but not water water?

Grace [21]

Answer:

Because water is water and its a liquid meanwhile plants are plants living things that you can move around.

Explanation:

3 0

2 years ago

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Which of the following correctly compares the uses of bar graphs versus pie charts?

slavikrds [6]

Bar graphs show data involved in distinct categories that do not overlap; whereas, pie charts show data as parts out of a whole (such as out of 100%).

6 0

2 years ago

A 6.50-g sample of copper metal at 25.0°C is heated by the addition of 84.0 J of energy. The final temperature of the copper is

Mekhanik [1.2K]

Answer:

Final temperature of the copper is 59 degrees Celsius

Explanation:

It is given that,

Mass of the sample of copper metal, m = 6.5 g

Initial temperature of the metal, $T_i=25^{\circ}\ C=298\ K$

Heat generated, Q = 84 J

The specific heat capacity of liquid water is 0.38 J/g-K

Let $T_f$ is the final temperature of the copper. It can be calculated using the definition of specific heat of any substance. It is given by :

$Q=mc\Delta T$

$Q=mc(T_f-T_i)$

$T_f=\dfrac{Q}{mc}+T_i$

$T_f=\dfrac{84}{6.5\times 0.38}+298$

$T_f=332\ K$

$T_f=59^{\circ}C$

So, the final temperature of the copper is 59 degrees Celsius. Hence, this is the required solution.

4 0

2 years ago

This chart shows characteristics of three different waves, all with the same wavelength of 10 m but moving at different Which st

JulijaS [17]

Answer:

Wave X is moving the fastest.

Explanation:

As we know that the speed of the wave is given as the product of frequency and wavelength

so here we will have

$\lambda = 10 m$

now for wave X

$f = 6 Hz$

now the speed of this wave is

$v_x = 10 \times 6 = 60 m/s$

now for wave Y

$f = 0.5 Hz$

now the speed of this wave is

$v_y = 10 \times 0.5 = 5 m/s$

now for wave Z

$f = 2 Hz$

now the speed of this wave is

$v_z = 10 \times 2 = 20 m/s$

So correct answer will be

Wave X is moving the fastest.

3 0

3 years ago

Read 2 more answers

Prove 1/P = 1/P1 + 1/P2

Sati [7]

Answer:

Proof:

|----------(R1)-------------(R2)---------|

Let the resistances be R1 , R2 connected in series. And the potential difference be V ;

We know that :

P1 = V²/R1 ..........(1) and

P2 = V²/R2 ...........(2)

In series combination , the net resistance is the algebraic addition of individual resistance :

R = R1 + R2

=> V²/P = V²/P1 + V²/P2

=> 1/P = 1/P1 + 1/P2

Explanation:

Copied it from a different brainly question that is this question. Please try to find it on brainly instead of asking it'd make it much easier.

7 0

3 years ago