Which of the following minerals maintains healthy fluid balance?A. Calcium and iron
B. Sodium and potassium
C. Magnesium and zinc
D. Selenium and iron

Answers

Answer 1

Answer: B. Sodium and potassium.

Answer 2

Answer: B. Sodium and Potassium

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Your physics teacher is giving you a special gift a box of mass 20 kg with a mystery surpise insie .the box is placed on a frictionsed table .what is the weigth of the box and normal reaction over it by the table ?

Answers

Answer:

F = 196.2 N

Explanation:

Use Newtons law

F = m * a

F = 20 kg * 9.81 m/s²

F = 196.2 N

Answer:

$\Huge \boxed{\mathrm{196.2 \ N}}$

$\rule[225]{225}{2}$

Explanation:

Using weight formula:

$\sf Weight = mass * acceleration \ of \ gravity$

$W=mg$

The mass of the box is 20 kg.

The acceleration of gravity on Earth is 9.81 m/s².

$W=(20)(9.81)$

$W=196.2$

The weight of the box is 196.2 N.

The net force of the box is zero, since the box is at rest. The normal force is exerted upward on it by the table.

$\rule[225]{225}{2}$

A printer has a power of 100 W. It takes 30 seconds to print out a document. How much energy will ithave used?

Answers

A printer has power of 100 W, and it takes time of 30 seconds to print out the document, then the power consumed in 30 seconds will be 0.8333 W.

What is Power?

The quantity of energy moved or changed per unit of time is termed as power in physics. The watt, or one joule per second, is the unit of power in the International System of Units. Power is also referred to as activity in historical texts. A scalar quantity is power.

Power is connected to other factors; for instance, the power required to move a land vehicle is equivalent to the sum of the vehicle's velocity, traction force on its wheels, and aerodynamic drag.

Assuming the printer consumes electrical energy at a steady rate, then:

100 ÷ 60 = 1.6667 watts per minute.

Now, calculate the power consumed in 30 seconds,

1.6667 ÷ 2 = 0.8333 watts.

Therefore, the power consumed in 30 seconds will be 0.8333 watts.

To know more about Power:

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100W translates to 100 watts consumed in 1 hour. Assuming the printer consumes electrical energy at a steady rate, then: 100 ÷ 60 = 1.6667 watts per minute. 1.6667 ÷ 2 = 0.8333 watts consumed in 30 seconds.

A skateboarder on a half-pipe changes his velocity from 6.0 m/s forwards to 4.0 m/s backward in 5.0 s. What is the acceleration of the skateboarder?

Answers

the change in velocity is 10 m/s in 5 seconds.

sinces a = change in velocity/time

a= 10/5

a=2

Japensese symbol for beginner are u a begginer

Answers

Answer:

yes

Explanation:

The solubility of glucose at 30°C is

125 g/100 g water. Classify a solution made by adding 550 g of glucose to 400 mL of water at 30°C. Explain your classification, and describe how you could increase the amount of glucose in the solution without adding more glucose.

what will be temperature on the kelvin scale if the indicated temperature on the Fahrenheit scale is 200degree Fahrenheit

Answers

We can use Kelvin = 5/9 (Fahrenheit - 32) + 273.15

K = 5/9(168) + 273.15

K = (93 and 1/3) + 273.15

K = 366.48 (rounded)

kelvin=366.38(approximately)

The principal limitation of wind power is unpredictability. Please select the best answer from the choices provideda. True
b. False

Answers

The correct answer is A: True. Although the ability to forecast weather has increased over the years, the ability to predict when and how much wind will occur at any given time and place is difficult. Weather conditions are subject to constant change and while some areas are known to have more wind than others, there is no guarantee about how much wind there will be as weather patterns vary in consistency.

Answer:

A. True

Explanation:

Other Questions

Different velocity-time graph lines are shown, displaying the behavior of multiple race carts along a linear track.Which description correctly identifies cart C?A) Has a positive acceleration and is speeding up. B) Moving with zero acceleration. C) Moving at a constant acceleration. D) Has a negative acceleration and is slowing down.

How much force is needed to stop a 90-kg soccer player if he decelerates at 15 m/s^2?A. 15 N B. 6 N C. 135 N D. 1,350 N

If the spring constant is 10 N/m and the spring is stretched 1 m, what is the Force?

How does inertia affect a person without a seat belt?