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ioda
3 years ago
15

A scooter travelling at 10 m/s speed up to 20 m/s in 4 sec. Find the acceleration of scooter.

Physics
1 answer:
Aleksandr-060686 [28]3 years ago
3 0

Explanation:

The acceleration of the scooter is 2.5 m/s

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If a chemical reaction has a AH value of -125 kJ, it would be considered what?
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exothermic

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negative means it's losing energy

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In a closed system, _____ energy is equal to potential energy plus kinetic energy.
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A 1.95 kg box sits on an incline of 24 ° with the horizontal. If the box accelerates down the incline at 0.245 m/s 2 , what is t
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Answer:

Explanation:

                            F = ma

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2 years ago
4. In a object filled with a type of gas, which of the following actions would decrease the pressure
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Answer:

Decrease the number of gas particles, increase the object's area, and reduce the temperature of the gas

Explanation:

<u>TEMPERATURE</u>:

Decreasing the temperature will slow down the molecules. Hence, less no. of collisions will take place between walls of object and molecules. This will result in decrease of pressure.

Therefore, the pressure of a gas can be decreased by increasing its temperature.

<u>NUMBER OF GAS PARTICLES</u>:

Decreasing the number of particles will result in less no. of collisions, hence decreasing the pressure.

Therefore, the pressure of a gas can be decreased by decreasing its no. of molecules or no. of particles.

<u>AREA OF OBJECT:</u>

The pressure is given by the formula:

P = \frac{F}{A}\\\\For constant Force (F):\\P\ \alpha\ \frac{1}{A}

where,

A = Area of Object

Therefore, the pressure of a gas can be decreased by increasing area of object.

So, the correct option is:

<u>Decrease the number of gas particles, increase the object's area, and reduce the temperature of the gas</u>

7 0
3 years ago
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