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2 years ago

What is the mean height of the plants given no fertilizer?

Physics

1 answer:

Marianna [84]2 years ago

3 0

Answer:

B. 33.5 cm

Explanation:

Steps:

Add all numbers, and divide by the number of addends.

Add 30.5, 32.1, 40.6, 30.5,and 33.8, and you get 167.5

Divide them by 5, and you get 33.5

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Find the magnitude of vector A = i - 2j + 3k O V14 10 O4

Angelina_Jolie [31]

Answer:

$|A|=\sqrt{1^2+(-2)^2+(3)^2}=3.74$

Explanation:

Given that,

Vector $A=i-2j+3k$ ............(1)

We need to find the magnitude of vector A. Let us suppose vector in the form of, R = xi + yj + zk. Its magnitude is given by :

$|R|=\sqrt{x^2+y^2+z^2}$

In equation (1),

x = 1

y = -2

z = 3

So, the magnitude of vector A is given by :

$|A|=\sqrt{1^2+(-2)^2+(3)^2}$

|A| = 3.74

So, the magnitude of given vector is 3.74. Hence, this is the required solution.

6 0

3 years ago

Anthony is deciding between different savings accounts at his bank. He has four options, based on how frequently interest compou

77julia77 [94]

So annual compounding means that the account is compound once a year, semi-annual is 2 times a year, monthly compounded is every month (so 12 times a year). and daily is every day (so 365 times a year). If he wants the best rate of return on his interest, or the most money, he should choose daily compounding because his funds are being compounded every day.

5 0

3 years ago

A circuit has resistors R 1 = 468 Ω and R 2 = 125 Ω R1=468 Ω and R2=125 Ω , and two batteries V 1 = 12.0 V and V 2 = 3.00 V V1=1

Greeley [361]

Answer:

0.0192A

Explanation:

Since, the reading of the galvanometer is 0 A, the voltage across the resistance R will be:

Step 1

VR = V2

VR = 3.00v

Step 2

Calculating the current through the resistance R as below,

IR = V1 - V2 /R1

IR = 12 - 3 /468

IR =0.0192A

7 0

3 years ago

A 2.0 kg pendulum has an initial total energy of 20 J. Calculate the energy lost as heat if the pendulum is 0.10 m high and is t

Maurinko [17]

The correct answer is (A) 2.0 J

Total energy of the pendulum is the sum of its kinetic and potential energy. At the instant of time, when the pendulum is at a height h and has a speed v, Its energy is given by,

$E=mgh+\frac{1}{2} mv^2$