PHYSICS HIGH SCHOOL

The following items are connected in a circuit. in which one would you find a voltage gain?a. battery
b. lamp
c. resistor
d. ammeter

Answers

Answer 1

Answer:

In a battery we can able to find the voltage gain.

The following information should be considered;

Since the battery is treated as the active device.
But the lamp, resistor, ammeter are considered to be the passive devices that result to the potential drops instead of the voltage gain.

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Answer 2

Answer:

Answer:

Explanation:

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The asthenosphere is a part of the upper mantle just below the lithosphere that is involved in plate tectonic movement and isostatic adjustments. Which is NOT true about the role of the asthenosphere in plate tectonics?

Answers

Complete option to the question:

A. The asthenosphere is broken up into large continental- and ocean-sized plates.

B. Convection currents within the asthenosphere push magma upward to create new crust.

C. Heat from deep within Earth is thought to keep the asthenosphere malleable.

D. The asthenosphere is the repository for parts of the lithosphere that are dragged downward in subduction zones.

Answer: The correct option is A (The asthenosphere is broken up into large continental- and ocean-sized plates.)

Explanation:

Among the components that makes up the earth crust are the lithosphere and the asthenosphere.

The LITHOSPHERE is the outer layer of the earth structure which consists of the upper part of the mantle and the crust.

The ASTHENOSPHERE is a part of the upper mantle just below the lithosphere that is involved in plate tectonic movement and isostatic adjustments. It is denser and weaker layer of the upper mantle which permits the movement of tectonic plates in the lithosphere.

The asthenosphere is the repository for parts of the lithosphere that are dragged downward in subduction zones.Heat from deep within Earth is thought to keep the asthenosphere malleable. And the convection currents within the asthenosphere push magma upward to create new crust. But it is not broken up into large continental- and ocean-sized plates.

You want to set up an aquarium and need to determine what size tank to buy. The graph shows tank sizes using a rule that relates the capacity of the tank to the combined lengths of the fish it can hold.If you want four 2-inch platys, three 1-inch guppies, and a 3-inch loach, what is the smallest capacity tank you can buy?

17-gallon tank
13-gallon tank
15-gallon tank
14-gallon tank

Answers

The minimum volume of the tank required for combined lengths of the fish is $\boxed{15\,{\text{gallons}}}$ .

Further Explanation:

The graph between the capacity of the tank and the combined length of the fishes present in the tank starts from the point $\left( {0,1} \right)$ and further it passes through the point $\left( {3,4} \right)$ .

The expression for the slope of the graph is as given below.

$m = \frac{{{y_2} - {y_1}}}{{{x_2} - {x_1}}}$

Substitute the co-ordinates of the points in equation of slope.

$\begin{aligned}m&= \frac{{4 - 1}}{{3 - 0}}\n&= (3)/(3)\n&= 1\n\end{aligned}$

The y-intercept of the graph is $1$ .

Write the expression for the equation of line of the graph.

$y = mx + c$

Substitute $1$ for $m$ and $1$ for $c$ in above expression.

$\begin{aligned}y&= \left( {1 \cdot x} \right) + 1 \hfill\ny&= x + 1 \hfill\n\end{aligned}$

The total length of all the fishes present inside the tank is.

$\begin{aligned}{L_(total)} &= \left( {4 * 2} \right) + \left( {3 * 1} \right) + \left( {1 * 3} \right) \n&= 8 + 3 + 3\n&= 14\,{\text{inches}}\n\end{aligned}$

Since the length of the fishes is given on the x-axis, substitute $14\,{\text{inches}}$ for $x$ in equation of line of the graph.

$\begin{aligned}y&= 14 + 1\n&= 15\,{\text{gallons}}\n\end{aligned}$

Thus, the minimum volume of the tank required for combined lengths of the fish is $\boxed{15\,{\text{gallons}}}$ .

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Answer Details:

Grade: High School

Chapter: Units and Measurements

Subject: Physics

Keywords: Aquarium, size of tank, capacity of the tank, combined lengths, the fish, platys, guppies, loach, inch, smallest capacity, gallon.

connexus unit 8 lesson 1 PRACTICE!

1) B

2) C

3) A

4) C

5) B

6) A

7) D

8) A

9) D

10) A

11) A

12) C

13) D

14) C

15) B

16) B

Hope this helps you guys out!

I will mark brainliest if you get it right.

Answers

Answer:

Satellite D

Explanation:

It has more mass

A series circuit contains two devices, one with a resistance of 10 ohms and one with a resistance of 4 ohms. If the generator supplies a voltage of 42 V, what is the magnitude of the current? A. 2 A B. 3 A C. 1.75 A D. 1.33 A

Answers

First you calculate the total resistance. Since the resistors are connected in series, the total equivalent resistance is:
Rtotal = R1 + R2 = 10 + 4 = 14 ohms

Now you calculate the electrical current with Ohm's law:
I = U/Rtotal = 42/14 = 3A

Correct answer: B. 3 A

Gaseous helium is in thermal equilibrium with liquid helium at 6.4 K. The mass of a helium atom is 6.65 × 10−27 kg and Boltzmann’s constant is 1.38066 × 10−23 J/K. Determine the most probable speed of a helium atom. Answer in units of m/s.