What is the word that means Have adapted to antibiotics

The following currents are measured in the same direction in a three-branch parallel circuit: 250 mA, 300 mA, and 800 mA. What i

Ksju [112]

The current in the junction is 1350 mA or 1.350 A.

Explanation:

As per Kirchoff's first law, the algebraic sum of current meeting at any junction should be equal to the algebraic sum of current leaving the junction. As in the present case, three parallel branch circuit is given the current in 250 mA, 300 mA and 800 mA, respectively, the sum of these three current will be equal to the current in the junction.

So,

I₁+I₂+I₃ = I₄

So I₁,I₂ and I₃ are the current passed in the three parallel branches and I₄ is the current in the junction.

250 + 300 + 800 = 1350 mA

So the current in the junction is 1350 mA or 1.350 A.

5 0

3 years ago

Choose all the answers that apply. Heat: is the same as temperature can be increased by compression is transferred in solids by

olga55 [171]

Answer:

The question can be re-framed as:

Heat:

⇒a) is the same as temperature

⇒b) can be increased by compression.

⇒c) is transferred in solids by conduction.

⇒d) is transferred in liquids by convection

⇒e) requires a medium.

Option c and d are correct choices.

Explanation:

⇔Heat is a form of energy which can be transferred from higher temperature to lower temperature.

So heat is not the same as temperature.

Where as temperature is the measure of Kinetic energy possessed by the particles of an object.

⇔As far as the Ideal Gas Law is concerned any gas will tend to heat up as it is compressed and cool down when it expands.

Heat can't be increased by compression its transfer of energy.

⇔Conduction is the transfer of heat between substances that are in direct contact with each other.

Heat is transferred in solids by conduction.

⇔Heat is transferred from hot places to cold places by convection. Convection occurs when warmer areas of a liquid or gas rise to cooler areas in the liquid or gas.

Heat is transferred in liquids by convection.

⇔Heat does not requires a medium for its transfer as in case of radiation where heat is transferred by electromagnetic waves.

Heat doesn't requires a medium for its transfer.

So our correct answer comprises:

Option C and option D that is Heat "is transferred in solids by conduction" and "is transferred in liquids by convection".

3 0

3 years ago

Read 2 more answers

F(x) = 3x^2+5x-14<br> Find f(-9)

Llana [10]

Answer:

f(-9) = 184

Explanation:

f(x)=3x²+5x-14

f(-9)= 3(-9)² +5(-9)-14 Order of Operations : Exponents

= 3(81)+5(-9)-14

= 243+5(-9)-14

= 243-45-14

= 198-14

f(-9)= 184

Hope this helps :)

8 0

3 years ago

A student pulls horizontally on a block with a spring scale. The block reads 24.5 Newtons before the block starts to move. It re

Ahat [919]

Answer:

The coefficient of friction causes the force on the object to be less than its initial reading on the spring scale.

Explanation:

Since the block reads 24.5 N before the block starts to move, this is its weight. Now, when the block starts to move at a constant velocity, it experiences a frictional force which is equal to the force with which the student pulls.

Now, since the velocity is constant so, there is no acceleration and thus, the net force is zero.

Let F = force applied and f = frictional force = μN = μW where μ = coefficient of friction and N = normal force. The normal force also equals the weight of the object W.

Now, since F - f = ma and a = 0 where a = acceleration and m = mass of block,

F - f = m(0) = 0

F - f = 0

F = f

Since the force applied equals the frictional force, we have that

F = μW and F = 23.7 N and W = 24.5 N

So, 23.7 N = μ(24.5 N)

μ = 23.7 N/24.5 N

μ = 0.97

Since μ = 0.97 < 1, the coefficient of friction causes the force on the object to be less than its initial reading on the spring scale.

7 0

3 years ago

A research submarine has a 30-cm-diameter window that is 8.1 cm thick. The manufacturer says the window can withstand forces up

malfutka [58]

The pressure at a certain depth underwater is:

P = ρgh

P = pressure, ρ = sea water density, g = gravitational acceleration near Earth, h = depth

The pressure exerted on the submarine window is:

P = F/A

P = pressure, F = force, A = area

The area of the circular submarine window is:

A = π(d/2)²

A = area, d = diameter

Set the expressions for the pressure equal to each other:

F/A = ρgh

Substitute A:

F/(π(d/2)²) = ρgh

Isolate h:

h = F/(ρgπ(d/2)²)

Given values:

F = 1.1×10⁶N

ρ = 1030kg/m³ (pulled from a Google search)

g = 9.81m/s²

d = 30×10⁻²m

Plug in and solve for h:

h = 1.1×10⁶/(1030(9.81)π(30×10⁻²/2)²)

h = 1540m

5 0

3 years ago