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kondaur [170]
3 years ago
9

A car drives down the highway at 30 m/s. The speed limit increases, and the car accelerates to 33 m/s over a displacement of 70

meters. How long did it take for the car to accelerate?​
Physics
1 answer:
MrMuchimi3 years ago
7 0

Answer:

the driveway takes about 243 meters per second for cfar to accelerate

Explanation:

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The period of a mechanical wave is 5 seconds. What is the frequency of the wave?
viva [34]
The frequency of a wave is just the reciprocal of the period.For this one . . .
Frequency  =  1/(period)  =  1/(5 sec)  =  0.2 per sec (0.2 Hz) .
8 0
3 years ago
Someone please answer this, ill give you brainliest and your getting 100 points.
dsp73

Answer:

Option B is correct

Explanation:

  • A is denoted to lithosphere followed by B -asthenosphere .

Which is covered by lava of E(Mantal section)

8 0
2 years ago
A bullet was fired from a gun. The bullet had a mass of 50g and the kinetic energy of the bullet was 25 kJ. How fast did it go?
Elenna [48]

Answer:

given \:  \\ mass \: (m) = 50g \\ kinetic \: enegy \: (k.e) = 25kj \\ velocity(v) = x \\ form \\ k.e =  \frac{1}{2}  \times MV ^{2}  \\ 25 =  \frac{1}{2}  \times 50 \times v {}^{2}  \\ 25 = 25 \times v {}^{2} \\ v {}^{2}  =  \frac{25}{25}  \\ v {}^{2}  = 1 \\ v =  \sqrt{1}  \\ v = 1ms {}^{ - }

the car it go fast with velocity 1m/s

5 0
3 years ago
If a raindrop is 0.05 cm3 in volume, what would the volume of an avogadro number of raindrops be?
zhenek [66]
If a raindrop is 0.05 cm^3 in volume, then <span> the volume of an Avogadro number of raindrops be 3.011 x 10^22 cm^3. To calculate this value, we simply multiply the volume given to Avogadro's number which </span><span>represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23.</span>
4 0
3 years ago
Technician A says that with a properly operating​ air-conditioning system, the inlet to the compressor should be cold and the ou
Alborosie

Answer:

Only technician A is correct

Explanation:

Analysis of technician A's statements

The refrigeration cycle contains four major components: the compressor, condenser, expansion device, and evaporator. Refrigerant remains piped between these four components and is contained in the refrigerant loop.

The refrigerant begins as a cool vapor and heads to the first component:

1. the compressor

It forces the refrigerant through the system. In the process of being compressed the cool, gaseous refrigerant is turned to a very hot and high-pressure vapor.

Analysis of technician B's statement

The condenser’s job is to cool the refrigerant so that it turns from a gas into a liquid, or condenses. This happens when warm outdoor air is blown across the condenser coil that is filled with hot, gaseous refrigerant.

The evaporator is responsible for cooling the air going to the space by boiling (evaporating) the refrigerant flowing through it. This happens when warm air is blown across the evaporator as cold refrigerant moves through the evaporator coil. Heat transfers from the air to the refrigerant, which cools the air directly before it is vented to the space.

5 0
4 years ago
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