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3 years ago

In addition to possibly releasing harmful chemicals in the environment, mining is considered

1 answer:

4 0

In addition to possibly releasing harmful chemicals in the environment, mining is considered B. The most dangerous job in the United States.

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Why does the area around the equator stay about the same temperature year round?

Verdich [7]

Axial Tilt and Sun Energy

This axial tilt means that during the Earth's journey around the sun the poles receive varying amounts of sunlight. The equator, however, receives relatively consistent sunlight all year. The consistency of energy means the equator's temperature stays relatively constant all year.

3 0

3 years ago

A circuit consists of a series combination of 6.50 −kΩ and 4.50 −kΩ resistors connected across a 50.0-V battery having negligibl

Vlada [557]

Answer:

Part A: 16.1 V

Part B: 20.5 V

Part C: 21.5%

Explanation:

The voltmeter is in parallel with the 4.5-kΩ resistor and the combination is in series with the 6.5-kΩ resistor. The equivalent resistance of the parallel combination is given as

$\dfrac{1}{R_E}=\dfrac{1}{4.50}+\dfrac{1}{10.0}$

$R_E=\dfrac{4.50\times10.0}{4.50+10.0} = 3.10$

Part A

The voltmeter reading is the potential difference across the parallel combination. This is found by using the voltage-divider rule.

$V_1 = \dfrac{3.10}{3.10+6.50}\times50.0 = \dfrac{3.10}{9.60}\times50.0 = 16.1 \text{ V}$

Part B

Without the voltmeter, the potential difference across the 4.5-kΩ resistor is found using the same rule as above:

$V_2 = \dfrac{4.50}{4.50+6.50}\times50.0 = \dfrac{4.50}{11.0}\times50.0 = 20.5 \text{ V}$

Part C

The error in % is given by

$\dfrac{20.5-16.1}{20.5}\times100\% = \dfrac{4.4}{20.5}\times100\% = 21.5\%$

4 0

3 years ago

Read 2 more answers

Why is this a scientific question?

defon

The 3rd one. The question can be tested by a systematic procedure

7 0

3 years ago

Read 2 more answers

SCIENCE:

ololo11 [35]

Answer:

A satellite goes into orbit by getting a ride with a rocket or the Space Shuttle. Gravitational pull and the velocity of the satellite help it remain in orbit.

Explanation:

8 0

3 years ago

Read 2 more answers

What is the mean of 7, 5, 10, and 2? 6 22 5 10

Korvikt [17]

Answer:

Explanation:

The mean is the same thing as the average. To find the average, add up all the numbers and then divide the sum by amount of numbers you added together.

First add up all the numbers.

7 + 5 + 10 + 2 = 24

Then divide by the number of numbers you added together. In this case we added 4 numbers together.

24 ÷ 4 = 6

~Hope this helps!~

6 0

3 years ago