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3 years ago

A + B + C → D + E

Physics

2 answers:

MAVERICK [17]3 years ago

5 0

B) the mass of the reactant equals the mass of the product.

Ksju [112]3 years ago

4 0

It is B because you need both sides to be equal to have a balanced equation.

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Three resistors, A, B, and C, are connected in parallel and attached to a battery, with the resistance of A being the smallest a

FromTheMoon [43]

Answer:

Resistor A

Explanation:

Resistors A, B and C are connected in parallel to a battery of voltage represented by V.

Since they are in parallel, the same voltage, V, passes across the three of them.

And from Ohm's law, the voltage (V) through a resistor is the product of the current (I) flowing through it and the resistance (R) of the resistor. i.e

V = I x R

=> I = $\frac{V}{R}$

Therefore, assuming the values of the resistances of resistors A, B and C are A, B and C respectively,

(i) the current, $I_{A}$ through A is

$I_{A}$ = $\frac{V}{A}$

(ii) the current, $I_{B}$ through B is

$I_{B}$ = $\frac{V}{B}$

(iii) the current, $I_{C}$ through C is

$I_{C}$ = $\frac{V}{C}$

From the foregoing, it can be deduced that the current is inversely proportional to the resistance. Therefore, the higher the resistance, the lower the current. Consequential of this, the resistor that carries the highest current is the one with the smallest resistance, which is A

5 0

3 years ago

7. Two rocks are rolled down a hill at different speeds. At the bottom of the hill is a brick wall. Which rock will hit the bric

amm1812

Answer:

I think first rock is right answer

8 0

3 years ago

The following arbitrary measurements are made and the errors sited are the aximum errors A = 15.21 +0.01, B = 10.82 +0.05, C = 1

Molodets [167]

Maximum error in the result of the sum of measurement is equal to the sum absolute error of the individual observed measurements

(a) The maximum error in D is 0.09

(b) The standard error in D is approximately 0.034

The procedure for arriving at the above values is as follows;

The given measurements and the sited errors are;

A = 15.21 + 0.01

B = 10.82 + 0.05

C = 11.00 + 0.03

D = A + B + C

(a) Required parameter;

To calculate the maximum error in D

The equation for the propagation of error in addition is presented as follows;

Given that we have;

x = a + b

Therefore;

x + ±Δx = (a ± Δa) + (b ± Δb) = a + b ± (Δa + Δb)

∴ Δx = Δa + Δb

From the above formula, we have;

Where;

D = A + B + C

The maximum error in D = The sum of the maximum error in A, B, C

∴ The maximum error in D = 0.01 + 0.05 + 0.03 = 0.09

(b) Required parameter:

To find the standard error in D

The standard error is the sampling distribution's standard deviation, SD

Variance = SD²

The combined variance, SD² = The sum of the squares of individual standard deviations

Given that the standard errors represents the standard deviation, we get;

The combined variance, SD² = 0.01² + 0.05² + 0.03²

The combined variance, SD = √(0.01² + 0.05² + 0.03²) = 0.059

$Standard \ error = \dfrac{SD}{\sqrt{n} }$

Where n = 3, for the three measurement, we get;

$Standard \ error = \dfrac{\sqrt{0.01^2 + 0.05^2 + 0.03^2} }{\sqrt{3} } \approx 0.034$

The standard error in D is approximately 0.034

Learn more about maximum error and standard error here:

brainly.com/question/13106593

brainly.com/question/17164235

3 0

3 years ago

A spiral spring of natural length 20.00cm has a scale

iVinArrow [24]

The mass of the scale pan : 0.11 kg

<h3>Further explanation</h3>

Given

A spiral spring's length = 20 cm

mass 50 g ⇒ the length = 22 cm

mass 70 g ⇒ the length = 22.25 cm

Required

the mass of the scale pan

Solution

Hooke's Law :

$\tt F=k.\Delta x$

The spring constant (k) :

$\tt k=\dfrac{\Delta F}{\Delta x}=\dfrac{g.(70-50)}{22.25-22}=\dfrac{g.20}{0.25}=g.80~g/cm=10~m/s^2\times 8~kg/m=80~N/m$

mass of the scale pan=m(for 50 g mass) :

$\tt (m+0.05).g=80\times (0.22-0.20)\\\\m=0.11~kg$

4 0

3 years ago

The gravitational attraction between two objects will what is the object move further apart

finlep [7]

The farther apart the two objects, the weaker the gravitational attraction between them.

3 0

3 years ago