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Maksim231197 [3]
3 years ago
12

A wave with a frequency of 14 Hz has a wavelength of 7m. At what speed will this wave travel?

Physics
1 answer:
frutty [35]3 years ago
8 0

Answer: A wave with a frequency of 14 Hz has a wavelength of 3 meters. At what speed will this wave travel? 1. = 3m (4. = 42m. 2. ... 1,7m (46) = 7802 m. 4. A wave traveling at 230 m/sec has a wavelength of 2.1 meters. What is the frequency of.

Explanation: please give me brainlest

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A lamp is rated for 240v,2.5A.what is the cost of using the lamp for 3hrs if 1kWh of electricity cost #12​
marshall27 [118]

Answer:

≈ 22¢

Explanation:

240 / 1000 = 0.240 kV

0.240 kV(2.5 A)(3 hr) = 1.8 kW•hr

1.8 kW•hr($0.12/kW•hr) = $0.216

6 0
3 years ago
Which of the following is a scalar quantity?
aalyn [17]

A. 14 gallons.

Scalar quantities require magnitude to describe them. They do not need direction to be described. 14 gallons is the mass of the gallons which is a scalar quantity.

5 0
3 years ago
A weight of 1400 pounds is suspended from two cables as shown in the figure. What is the tension in the left cable? _________ po
juin [17]

Answer:

Following are the solution to this question:

Explanation:

Law:

\to \theta= 180^{\circ}- 50^{\circ}- 25^{\circ}

      = 180^{\circ}- 75^{\circ}\\\\= 105^{\circ}

\to \frac{T_{L}}{\sin (90+50)}= \frac{T_{R}}{\sin (25+90)}=\frac{1400}{\sin (105)}

\to T_L=931.65 \ pounds \\\\ \to T_R=1313.59 \ pounds \\\\

4 0
3 years ago
If there is a doubt on a boundary call in tennis, you should do what?
Ronch [10]

Answer: Each player is responsible for all decisions in her half of the Court. She should be completely honest on all “calls” but, if in doubt, she should give her opponent the benefit of the doubt and play the ball as good. You should not play a let.

Explanation:

3 0
3 years ago
3. Order the following lengths from shortest to longest.
horrorfan [7]

Answer: d < a < c < b

3.3 cm < 400 mm < 170 m < 22 km

Explanation:

Firstly, let's convert these length to meters m, in order to work with the same units:

a. 400 millimeters

400 mm \frac{1m}{1000 mm}=0.4 m

b. 22 kilometers

22 km \frac{1000m}{1 km}=22000 m

c. 170 meters

Here the lenght is already in meters

d. 3.3 centimeters

3.3 cm \frac{1m}{100 cm}=0.033 m

Now that we have all the lengths in meters, we can order them from shortest to longest:

0.033 m < 0.4 m < 170 m < 22000 m

or

d < a < c < b

7 0
4 years ago
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