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Natalka [10]
4 years ago
10

A car travels from city A to city B separated by 282 km and the journey takes approximately 6 hours and 32 minutes. If they come

back in 8 hours. What is your average speed throughout the journey? What is its average speed?
Physics
1 answer:
Bond [772]4 years ago
6 0

Answer:

38.8 km/hr

Explanation:

The total distance is 2 × 282 km = 564 km.

The total time is 6 hr 32 min + 8 hr = 14 hr 32 min = 14.533 hr.

The average speed is:

(564 km) / (14.533 hr)

38.8 km/hr

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The winch takes in cable at the constant rate of 130 mm/s. if the cylinder mass is 115 kg, determine the tension in cable 1. neg
nikitadnepr [17]
By applying Newton's second law of motion;

ma = mg - T

Where,
m = mass; a = downward accelerations (+ve value) or upward acceleration (-ve value); g = gravitational acceleration; T = tension.

For the current case, the velocity is constant therefore,
a = 0

Then,
0 = mg - T
T = mg = 115*9.81 = 1128.15 N

Tension in the cable is 1128.15 N.
8 0
4 years ago
Lightning occurs when there is a flow of electric charge (principally electrons) between the ground and a thundercloud. The maxi
Korolek [52]

Answer:

2C  charge will flow from ground and cloud

Explanation:

We have given rate rate of flow of charge \frac{dq}{dt}=20000C/sec

Time is given as t=100\mu sec=100\times 10^{-6}=10^{-4}sec

WE have to find the how much charge flows between the ground and cloud in this time

So the charge flow is given by \frac{dq}{dt}\times t=20000C/sec\times 10^{-4}=2C

So 2C  charge will flow from ground and cloud

8 0
3 years ago
Type the correct answer in the box.use numerals instead of words. if necessary, use / for the fraction bar. δabc is a right tria
NNADVOKAT [17]

From the diagram The value of cos C × sin A = \frac{3}{4}

<h3>Determine the numerical value of cos C × sin A</h3>

First step : determine the values of cos C and sin A

cos C = adjacent / hypotenuse

          = a / b

          = \sqrt{3}  / 2

          = √3/2

sin A = sin 60⁰

         = √3/2

Therefore the numerical value of cos C * sin A = \frac{3}{4}

In conclusion From the diagram The value of cos C × sin A = \frac{3}{4}

Learn more about right angle : brainly.com/question/24323420

#SPJ1

8 0
2 years ago
Capacitors C1 = 5.85 µF and C2 = 2.80 µF are charged as a parallel combination across a 250 V battery. The capacitors are discon
posledela

Answer:

Q1_new = 515.68 µC

Q2_new = 246.82 µC

Explanation:

Since the capacitors are charged in parallel and not in series, then both are at 250 V when they are disconnected from the battery.

Then it is only necessary to calculate the charge on each capacitor:

Q1 = 5.85 µF * 250 V = 1462.5 µC

Q2 = 2.8 µF * 250 V = 700 µC

Now, we will look at 1462.5 µC as excess negative charges on one plate, and 1462.5 µC as excess positive charges on the other plate. Now, we will use this same logic for the smaller capacitor.

When there is a connection of positive plate of C1 to the negative plate of C2, and also a connection of the negative plate of C1 to the positive plate of C2, some of these excess opposite charges will combine and cancel each other. The result is that of a net charge:

1462.5 µC - 700 µC = 762.5 µC

Thus,762.5 µC of net charge will remain in the 'new' positive and negative plates of the resulting capacitor system.

This 762.5 µC will be divided proportionately between the two capacitors.

Q1_new = 762.5 µC * (5.85/(5.85 + 2.8)) = 515.68 µC

Q2_new = 762.5 µC * (2.8/(5.85 + 2.8) = 246.82 µC

4 0
4 years ago
This diagram shows a baseball motion
Sonbull [250]
Where is the diagram
4 0
3 years ago
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