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stepladder [879]

4 years ago

14

A good way of ensuring whether a listener has understood a presentation is to record all major and minor details. identify all u

nknown words and phrases. rewrite the entire presentation. summarize in one’s own words.

2 answers:

PolarNik [594]4 years ago

4 0

Answer:

Summarize in one's own words

Explanation:

Y_Kistochka [10]4 years ago

4 0

Answer:

D

Explanation:

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Calculate the angle of banking on a bend of 100m radius so that vehicles can travel round the bend at 50km/hr without side thrus

saw5 [17]

Answer:

11.125°

Explanation:

Given:

Radius of bend, R = 100 m

Speed around the bend = 50 Km/hr = $\frac{5}{18}\times50$ = 13.89 m/s

Now,

We have the relation

$\tan\theta=\frac{v^2}{gR}$

where,

θ = angle of banking

g is the acceleration due to gravity

on substituting the respective values, we get

$\tan\theta=\frac{13.89^2}{9.81\times100}$

or

$\tan\theta=0.1966$

or

θ = 11.125°

3 0

3 years ago

An AC circuit has a resistor, capacitor and inductor in series with a 120 V, 60 Hz voltage source. The resistance of the resisto

aliina [53]

Answer:

(i) 3.5385 ohm, 3.768 ohm (ii) 39.89 A (III) 4773.857 W (vi) 348 var (vii) 0.9973 (viii) 4.1796°

Explanation:

We have given voltage V =120 volt

Frequency f=60 Hz

Resistance R =3 ohm

Inductance L =0.01 H

Capacitance C =0.00075 farad

(i) reactance of of inductor $X_L=\omega L=2\pi fL=2\times 3.14\times 60\times 0.01=3.768ohm$

$X_C=\frac{1}{\omega C}=\frac{1}{2\times 3.14\times 60\times 0.00075}=3.5385ohm$

(ii) Total impedance $Z=\sqrt{R^2+(X_L-X_C)^2}=\sqrt{3^2+(3.768-3.5385)^2}=3.008ohm$

Current $i=\frac{V}{Z}=\frac{120}{3.008}=39.89A$

(viii) power factor $cos\Phi =\frac{R}{Z}=\frac{3}{3.008}=0.9973$

(VII) $cos\Phi =0.9973$

$\Phi =4.1796^{\circ}$

So power factor angle is 4.1796°

(iii) Apparent power $P=VICOS\Phi =120\times 39.89\times 0.9973=4773.875W$

(vi) Reactive power $Q=VISIN\Phi =120\times 39.89\times SIN4.17^{\circ}=348var$

5 0

3 years ago

Question 9 of 10 (1 point) Jump to Question:

Katen [24]

Answer:

A.

Explanation:

8 0

4 years ago

Read 2 more answers

A safety interlock module operates by monitoring the voltage from the

In-s [12.5K]

Answer: its an Ignition coil

8 0

4 years ago

If you know that the change in entropy of a cup of coffee where heat was added is 20 J/K, and that the temperature of the coffee

Anna35 [415]

Answer:

5000J

Explanation:

Given in the question that

Heat added to the coffee cup is, ΔS = 20 J/K

The temperature of the coffee, T = 250 K

Now, using the formula for the entropy change

$\bigtriangleup S=-\frac{\bigtriangleup H}{T}$ ...........(1)

Where,

ΔS is the entropy change

ΔH is the enthalpy change

T is the temperature of the system

substituting the values in the equation (1)

we get

$20=-\frac{\bigtriangleup H}{250}$

ΔH=250×20

ΔH=5000 J

6 0

3 years ago