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3 years ago

Calculate the speed of a car which covers 240 km in 360 minutes

Physics

1 answer:

seraphim [82]3 years ago

6 0

Exchange: 360 mins = 6 hours

=> In 1 hour, the car can move: 240 /6 = 40 km

So the speed of a car is 40kph (Kilometre per hour)

Hope it helps, please Brainliest <3

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3 years ago

How much kinetic energy does a 1500 kg car have if it’s moving at 15 m/s

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Answer:

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Read 2 more answers

The length of a rectangle is increasing at a rate of 4 cm/s and its width is increasing at a rate of 6 cm/s. When the length is

Fudgin [204]

Answer:

24cm/s

Explanation:

A=L*w

A'=L'*w'

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L'=4

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A'=?

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3 years ago

(marking brainliest) pease help asap! both of the questions are in the pdf, and please let me know which is question one and whi

REY [17]

<h2>ANSWERS </h2>

1) The relationship in between the electrical energy carriesd by the transmission wires and the amount of the heat loss in it is due to the reason that when the electricity is flown through the wires there are some resistance found in these wires which creates a disturbance in the efficient flow of electricty.Also we know that current have an heating effect when it is in motion as due to if a large amount or magnitude of electricity is flown through the transmission wires it will carry a larger heat effected and also due to the resistance is provided by the wires and so the process of heat loss takes place.

2)It is important to minimize current in transmission wires due to minimize the heat loss and resistance on flowing electric current to make the system more efficient 

 3)Given Resistance = 250 ohms 

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so we know Power = 

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=(150^2/250)(ohms/volts)

=(22500/250)watt = 90 watt 

4)Heat energy (H) = Power(P)×Time(t)

4)Heat energy (H) = Power(P)×Time(t)= (90×2)joules = 180 joules

Hope it helps

4 0

3 years ago

Calculate the speed of a car which covers 240 km in 360 minutes​

Calculate the speed of a car which covers 240 km in 360 minutes