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DochEvi [55]
3 years ago
12

Why is an object in uniform circular motion experiencing centripetal acceleration?

Physics
1 answer:
slava [35]3 years ago
3 0

Answer:

Hey

If you are accelerating you are either changing direction or speeding or slowing down. if you are going in a circular motion you aren't speeding up or slowing down but your velocity (speed+direction) is constantly changing.

hope it helped

spiky bob your answerer

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A lamp is labelled '230 V, 100 W'. How many joules of electrical energy is changed to thermal energy and light if the lamp is sw
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Given;

V = 230V

Power, P = 100W

time, t = 2hrs = 7200s

from,

P = IV

and Energy, E= Pt

E = 100*7200

E = 720000 Joules

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1. A change in an object's speed has a(n) _________ effect on its kinetic energy than a change in its mass.
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Technician A says that the radiator should always be inspected for leaks and proper flow before installing a rebuilt engine. Tec
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Answer:

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Explanation:

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3 years ago
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A student project is required to be portable and hand held. It requires 6 V DC power at a current of 150 mA. The batteries for t
egoroff_w [7]

Answer:

a. 5 batteries b. 1050 mAh

Explanation:

Here is the complete question

A student project is required to be portable and hand held. It requires 6 V DC power at a current of 150 mA. The batteries for the power supply must last for a minimum of 7 hours of continuous operation. NiMH rechargeable batteries in AA size are to be used. A) How many batteries are needed? B) What mAh capacity should the batteries have?

Solution

A) How many batteries are needed?

Since the nominal voltage for a single NiMH battery is 1.2 V per battery and we require 6V DC power, we combine the batteries in series to obtain a total voltage of 6 V. The number of batteries required, n = total voltage/voltage per cell = 6V/1.2V per battery = 5 batteries

So, the number of batteries needed is 5.

B) What mAh capacity should the batteries have?

Since the batteries are in series, they would each deliver a current of 150 mA. Since we require a current of 150 mA for 7 hours, the number of milliampere-hours capacity mAh of batteries required is Q = It where I = current = 150 mA and t = time = 7 hours.

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