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emmasim [6.3K]
3 years ago
15

What is the mean height for the grass used as a control?

Physics
1 answer:
motikmotik3 years ago
5 0
The mean height for the grass used as a control is equal to the total number of the data came from the control grass divided by the number of control grass in the experiment. The mean height means the average height of the grass.
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The total charge a battery can supply is rated in mA⋅hmA⋅h, the product of the current (in mA) and the time (in h) that the batt
Nat2105 [25]

Answer:

118800 seconds

Explanation:

Given :

Voltage, V = 1.2 V

Resistance, R = 22 Ω

Applying Ohm's law, we get

Voltage, V = IR

Current $I=\frac{V}{R}$

           $I=\frac{1.2}{22}$

          I = 0.0545 A

Rate = 1800 mAh

Time taken, $t=\frac{1800 \times 10^{-3}}{0.0545}$

                       = 33 hr

                      = 118800 s

8 0
3 years ago
Which of the following statements is true?
Tresset [83]

Answer:

option A

Explanation:

the correct answer is option A

when the air temperature increases the relative humidity decreases.

When temperature increase the ability to hold water vapor decreases.

higher the water vapor more will be the amount of moisture content.

it take less water vapor to saturate air in a city with low temperature compared with high air temperature.

8 0
3 years ago
String linear mass density is defined as mass/unit length. Calculate the linear mass density in kg/m of a string with mass 0.3g
SIZIF [17.4K]

Answer:

Linear mass density,\lambda=2\times 10^{-4}\ kg/m

Explanation:

Given that,

Mass of the string, m = 0.3 g = 0.0003 kg

Length of the string, l = 1.5 m

The linear mass density of a string is defined as the mass of the string per unit length. Mathematically, it is given by :

\lambda=\dfrac{m}{l}

\lambda=\dfrac{0.0003\ kg}{1.5\ m}

\lambda=0.0002\ kg/m

or

\lambda=2\times 10^{-4}\ kg/m

So, the linear mass density of a string is 2\times 10^{-4}\ kg/m. Hence, this is the required solution.

5 0
4 years ago
But how can the only number that is less than 4 or equal to 4 be 8<br>​
Assoli18 [71]

However, consequently and moreover, we need to know everything before "but".

4 0
3 years ago
1. A truck was pulling a R.V. Away from the end of the cliff. The chain broke and the RV fell to the ground. If the truck had an
shepuryov [24]

Answer:

The force of impact, F = 17682.18 N

Explanation:

Given,

The initial velocity of the truck and associated velocity of RV, u = 2 m/s

The height of the cliff, h = 280 ft

                                        = 85.344 m

The mass of the RV, m = 1800 Kg

The total energy of the RV at height, 'h' with velocity, 'v', E = P.E + K.E

                                P.E = mgh J

                                       = 1800 x 9.8 x 85.344

                                      = 1505468.16 J

                                K.E = mv²/2

                                       = 1800 x 2² / 2

                                      =3600 J

Therefore total energy, E = 1509068.16 J

This is equal to the kinetic energy of RV at the impact.

The force of impact,

                                      F = E/h

                                         = 1509068.16 J / 85.344 m

                                         = 17682.18 N

Hence, the force of impact of RV is, F = 17682.18 N

8 0
3 years ago
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