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Eduardwww [97]
3 years ago
7

Which of these experiments would make use of qualitative data?

Physics
1 answer:
pychu [463]3 years ago
7 0

"A study of the different amounts of time it takes water to evaporate completely"
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A river flowing steadily at a rate of 175 m3 /s is considered for hydroelectric power generation. it is determined that a dam ca
pentagon [3]
<span>137200000 watts or 137200 kilowatts The formula for power is P= dhrg Where P = Power in watts d = density of water (~1000 kg/m^3) h = height in meters r = flow rate in cubic meters per second, g = acceleration due to gravity of 9.8 m/s^2, Plugging in the known values, we get P = 1000 kg/m^3 * 80 m * 175 m^3/s * 9.8 m/s^2 P = 80000 kg/m^2 * 175 m^3/s * 9.8 m/s^2 P = 14000000 kg m/s * 9.8 m/s^2 P = 137200000 kg m^2/s^3 P = 137200000 watts or 137200 kilowatts The above figure assumes 100% efficiency which is impossible. A good efficiency would be 90% so the actual power available would be close to 0.90 * 137200 = 123480 kilowatts</span>
8 0
3 years ago
When an electron in a certain excited energy level in a one-dimensional box of length 2.00 Å makes a transition to the ground st
Fiesta28 [93]

Answer:

Calculate the wavelength associated with an electron with energy 2000 eV.

Sol: E = 2000 eV = 2000 × 1.6 × 10–19 J

5 0
3 years ago
In the same configuration of the previous problem 3, four long straight wires are perpendicular to the page, and their cross sec
faust18 [17]

Complete Question:

In the same configuration of the previous problem 3, four long straight wires are perpendicular to the page, and their cross sections form a square of edge length a = 13.5 cm. Each wire carries 7.50 A, and the currents are out of the page in wires 1 and 4 and into the page in wires 2 and 3.

a) Draw a diagram in a (x,y) plane of the four wires with wire 4 perpendicular to the origin. Indicate the current's directions.

b) Draw a diagram of all magnetic fields produced at the position of wire 3 by the other three currents.

c) Draw a diagram of all magnetic forces produced at the position of wire 3 by the other three currents.

d) What are magnitude and direction of the net magnetic force per meter of wire length on wire 3?

Answer:

force, 1.318 ₓ 10⁻⁴

direction, 18.435°

Explanation:

The attached file gives a breakdown step by step solution to the questions

7 0
3 years ago
What is the wavelength of an fm radio signal that has a frequency of 91.7 mhz?
Digiron [165]

Answer:

The wavelength of the radio wave will be 3.271 m

Explanation:

We have given frequency of the radio signal f=91.7MhZ=91.7\times 10^6Hz

Speed of the light c=3\times 10^8m/sec

We have to find the wavelength of the radio signal

We know that wavelength is given by \lambda =\frac{c}{f}=\frac{3\times 10^8}{91.7\times 10^6}=3.271m

So the wavelength of the radio wave will be 3.271 m

3 0
3 years ago
Please help!<br> If an object has a mass of 500 g and floats, what volume of water must it displace?
mafiozo [28]

It must displace at least 500 milliliters (0.5 liter) of water, in order to float in water.

4 0
3 years ago
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