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olga2289 [7]
3 years ago
7

What is the wavelength of an earthquake wave if it has a speed of 7 km/s and a frequency of 12 Hz?

Physics
1 answer:
jonny [76]3 years ago
7 0
Wavelength = speed / frequency 
 = 7 km/s / 12 /s
 = 0.58 Km

In short, Your Answer would be 0.58 Km or 580 m

Hope this helps!
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Why cant people with aids foght out the infection?
sveta [45]
They can fight the infection but not the disease
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2 years ago
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A projectile is launched at an angle of 60 degrees to the horizontal at an initial speed of 10 meters per second. What is the ma
Flura [38]

Answer:

5 sq. root 3

Explanation:

theta= 60°

=> u sin theta = 10 × sin 60

= 10× sq. root 3/2

= 5 sq. root 3

3 0
2 years ago
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A farmer hitches her tractor to a sled loaded with firewood and pulls it a distance
Delvig [45]

(a) The work done by the force applied by the tractor is 79,968.47 J.

(b) The work done by the frictional force on the tractor is 55,977.93 J.

(c) The total work done by  all the forces is 23,990.54 J.

<h3>Work done by the applied force</h3>

The work done by the force applied by the tractor is calculated as follows;

W = Fd cosθ

W = (5000 x 20) x cos(36.9)

W = 79,968.47 J

<h3>Work done by frictional force</h3>

W = Ffd cosθ

W = (3500 x 20) x cos(36.9)

W = 55,977.93 J

<h3>Net work done by all the forces on the tractor</h3>

W(net) = work done by applied force  -  work done by friction force

W(net) = 79,968.47 J -  55,977.93 J

W(net) = 23,990.54 J

Learn more about work done here: brainly.com/question/25573309

#SPJ1

4 0
1 year ago
If a 60 kg woman, runs up a flight of stairs having a total rise of 4.0m in a time of 4.2s. What average power did she supply?
LenKa [72]
 <span>PE = m * g * h 
PE = 60 * 9.8 * 4 
PE = 2352 J 

Power = E/t 

Power = PE/t 
Power = 2352/4.2 
Power = 560 Watt</span>
6 0
3 years ago
A straight wire carries a current of 238 mA from right to left. What is the magnetic field at a point 10.0 cm directly below the
Alex777 [14]

Answer:

B = (4.76 × 10⁻⁷) T

Explanation:

From Biot Savart's law, the magnetic field formula is given as

B = (μ₀I)/(2πr)

B = magnetic field = ?

I = current = 238 mA = 0.238 A

μ₀ = magnetic constant = (4π × 10⁻⁷) H/m

r = 10 cm = 0.1 m

B = [4π × 10⁻⁷ × 0.238)/(2π×0.1)]

B = (4.76 × 10⁻⁷) T

The direction of the magnetic field is in the clockwise direction wrapped around the current-carrying wire.

Hope this Helps!!!

4 0
3 years ago
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