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enyata [817]
4 years ago
13

What acceleration is caused by Earth's gravity near the surface?

Physics
1 answer:
suter [353]4 years ago
6 0

Answer:

9.8 meters is the acceleration of gravity. This is near the surface of the Earth.

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A pump lifts 260 kg of water per hour a height of 3.5 m . What is the minimum necessary power output rating of the water pump in
Phantasy [73]

Answer:

2.5 Watts.

Explanation:

From the question given above, the following data were obtained:

Mass (m) = 260 Kg

Time (t) = 1 h

Height (g) = 3.5 m

Power (P) =.?

Next, we shall determine the energy. This can be obtained as follow:

Mass (m) = 260 Kg

Height (g) = 3.5 m

Acceleration due to gravity (g) = 10 m/s²

Energy (E) =?

E = mgh

E = 260 × 10 × 3.5

E = 9100 J

Finally, we shall determine the power. This can be obtained as follow:

Time (t) = 1 h = 3600 s

Energy (E) = 9100 J

Power (P) =.?

P = E/t

P = 9100 / 3600

P = 2.5 Watts

Thus, the power is 2.5 Watts.

7 0
3 years ago
What causes high and low tides?
Paladinen [302]
The gravitational effect of the moon causes both the high tide and low tides.
4 0
4 years ago
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Pani-rosa [81]
The total displacement is 4.0 m east.
4 0
3 years ago
You were driving your car to UTD at a speed of 35 miles per hour. You stopped at the FloydCampbell intersection with the signal
ser-zykov [4K]

Answer:

green light have high energy

Explanation:

We have given the wavelength of the red light \lambda =6.45\times 10^{-5}cm=6.45\times 10^{-7}m

Speed of the light c=3\times 106{8}m/sec

The energy of the signal is given by E=h\nu =h\frac{c}{\lambda }=\frac{6.67\times 10^{-34}\times 3\times 10^{8}}{6.45\times 10^{-7}}=3.1023\times 10^{-15}j

The frequency of the green light is given by:

f=5.80\times 10^{14}s^{-1}

So energy E=h\nu =6.67\times 10^{-34}\times 5.80\times 10^{14}=3.8686\times 10^{-19}j

So green light have high energy

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