CHEMISTRY HIGH SCHOOL

An electric circuit can have no current when a switch is ________

Answers

Answer 1
Answer: Answer;

Open

An electric circuit can have no current when a switch is open.

Explanation;
  • An electric circuit is a path in which electrons from a voltage or current source flow.
  • Electric switches are used to connect and break the flow of connectivity or flow of electrons in a circuit. A switch makes it easy to open or close an electrical circuit, turning the flow of electricity on or off.
  • When a switch is closed the circuit is closed and thus the flow of current is on while when the switch is open, the circuit is open, and therefore there will be no flow of current in the circuit.
Answer 2
Answer: An electric circuit can have no current when a switch is open. that is the correct answer.

Related Questions

MIDDLE SCHOOL

Which of the following do you think use plasma? welding
rocket engines
computer chips
surgery
chemical analysis
ozone generation

Answers

Answer:

Rocket engines

Explanation:

U know how I know it? Well I'm an astrophysicist and of course I watch star wars...

Answer Rocket engines
COLLEGE

A steady-state plasma concentration of 25 mg/L v by IV infusion to healthy volunteers (average weight, 75 kg) at a rate of 7.5 mg/kg/hr for 6 hours. Calculate the total body clearance of this drug. A. 12.5 L/hr B. 22.5 L/hr C. 42.5 L/hr D. 62.5 L/hr was measured when a drug was given

Answers

Answer:

The correct answer is option B.

Explanation:

Concentration of a  steady-state plasma ,= 25 mg/L

Weight of the volunteer =75 kg

Rate of infusion = 7.5 mg/kg hr

Concentration of steady-state plasma in 75 kg weight body:

Total body clearance of this drug:

The total body clearance of this drug is 22.5 L/hr.

COLLEGE

When 1.98g of a hydrocarbon is burned in a bomb calorimeter, the temperature increases by 2.06∘C. If the heat capacity of the calorimeter is 69.6 J∘C and it is submerged in 944mL of water, how much heat (in kJ) was produced by the hydrocarbon combustion?

Answers

Answer:

8.3 kJ

Explanation:

In this problem we have to consider that both water and the calorimeter absorb the heat of combustion, so we will calculate them:

q for water:

q H₂O = m x c x ΔT where m: mass of water = 944 mL x 1 g/mL = 944 g

                                      c: specific heat of water = 4.186 J/gºC

                                     ΔT : change in temperature = 2.06 ºC

so solving for q :

q H₂O = 944 g x 4.186 J/gºC x 2.06 ºC = 8,140 J

For calorimeter

q calorimeter  = C x  ΔT  where C: heat capacity of calorimeter = 69.6 ºC

                                     ΔT : change in temperature = 2.06 ºC

q calorimeter = 69.60J x 2.06 ºC = 143.4 J

Total heat released = 8,140 J +  143.4 J = 8,2836 J

Converting into kilojoules by dividing by 1000 we will have answered the question:

8,2836 J x 1 kJ/J = 8.3 kJ

COLLEGE

Name the type of bond in organic chemistry that corresponds to a glycoside bond

Answers

Answer:

covalent bond

Explanation:

The bond which is most common in the organic molecules is the covalent bond which involves sharing of the electrons between the two atoms.

Glycosidic bond, also known as glycosidic linkage is type of the covalent bond which joins carbohydrate molecule to other group that may not or may be a carbohydrate.

Glycosidic bond is the bond which is formed between hemiacetal or hemiketal group of the saccharide and hydroxyl group of compounds like alcohol.

HIGH SCHOOL

Using Hess's law, what is ÎH°rxn for the following reaction?NO(g) + O(g) â NO2(g)NO(g) + O3(g) â NO2(g) + O2(g) ÎH°rxn = â198.8 kJ/molO3(g) â 3/2 O2(g) ÎH°rxn= â142.2 kJ/molO2(g) â 2O(g) ÎH°rxn= +498.8 kJ/mol

Answers

Answer:

The enthalpy of the reaction asked is -306 kJ/mol.

Explanation:

..[1]

..[2]

..[3]

..[4]

Hess’s law of constant heat summation states that the amount of heat absorbed or evolved in a given chemical equation remains the same whether the process occurs in one step or several steps.

[1] - [2]  - [3] × 0.5 = [4]

(By using Hess's law)

The enthalpy of the reaction asked is -306 kJ/mol.

MIDDLE SCHOOL

SCIENTISTS CAN USE SPECTRA ANALYSIS OF STARS TO DETERMINE WHICH OF THE FOLLOWING? SELECT ALL THAT APPLY SURFACE TEMPERATURE OF THE STAR
CORE TEMPERATURE OF STARS
ELEMENTS IN THE CORE OF THE STAR
ELEMENTS ON THE SURFACE OF THE STAR

Answers

Answer:

surface temperature of the star

core temperature of stars

elements on the surface of the star

Explanation:

I got it right on the test!!

Both the surface and core temperature can be measured using light.

MIDDLE SCHOOL

What are three ways that magma can form

Answers

The three ways of magma formation are, decompression melting brought on by reducing pressure, 2) Flux melting brought on by introducing volatiles  and 3) Heat-induced melting brought on by raising temperature.

What is magma?

Magma is the molten fluid in the earth crest which eventually forms the rocks.Here are the three main ways that rock behavior can move past the green solidus line and result in molten magma:

1) Decompression melting brought on by reducing pressure, 2) Flux melting brought on by introducing volatiles and 3) Heat-induced melting brought on by raising temperature.

Different temperatures cause minerals to melt, as demonstrated by the Bowen's reaction Series. The solidus border is more of a fuzzy zone than a clearly defined line since magma is a mixture of many minerals; some minerals melt while others remain solid.

Partially melting rocks have the same characteristics as real-world magmas, which often include solid, liquid, and volatile components.

To know more on magma, refer here:

brainly.com/question/16940653

#SPJ2

The three ways magma can form are when rock is heated, when pressure is released, and when the composition of the rock changes. The temperature of magma is 1300-2400F. Magma collects in magma chambers under the earth's surface, and can be come to the surface in the form of lava.
MIDDLE SCHOOL

What is the most accurate description of compounds?

Answers

Water: two hydrogen atoms bonded to an oxygen atom. The type of bonds holding elements together in a compound can vary: two common types are covalent bonds and ionic bonds.
A compound is a pure substance chemically combined by two or more different elements. 
HIGH SCHOOL

One liter equals the volume of a 10 cubic centimeters. True False

Answers

False because it equals 0.01ml 
Yes it does equal 10 cubic centimeters
Random Questions