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Sati [7]
3 years ago
10

2. An earthquake travels at 3.8 km/s and has a wavelength of 480 m. What is the frequency of the earthquake?

Physics
1 answer:
babunello [35]3 years ago
4 0

Answer:

7.9

Explanation:

speed = 3.8

speed = frequency * wavelength

frequency = \frac{speed}{wavelength} =  \frac{3.8 * 1000}{480} = 7.9

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A car initially traveling at 24 m/s slams on the brakes and moves forward 196 m before coming to a complete halt. What was the m
Marrrta [24]

Answer:

-1.47 m/s^2

Explanation:

We can use the following SUVAT equation to solve the problem:

v^2 - u^2 = 2ad

where

v = 0 is the final velocity of the car

u = 24 m/s is the initial velocity

a is the acceleration

d = 196 m is the displacement of the car before coming to a stop

Solving the equation for a, we find the acceleration:

a=\frac{v^2-u^2}{2d}=\frac{0-(24)^2}{2(196)}=-1.47 m/s^2

4 0
3 years ago
It was once recorded that a Jaguar left skid marks that were 290 m in length. Assuming that the Jaguar had a constant accelerati
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3 years ago
A simple pendulum consisting of a bob of mass m attached to a string of length L swings with a period T on Earth. Calculate the
melamori03 [73]

Answer:

T = T

Explanation:

Time period of a simple pendulum is not affected by the mass of the bob. As we know, T = 2\pi \sqrt{L/g} . There is no factor of mass affecting when we derived the equation. The basic reason behind the time period is not affected is because of mass dependence on angular acceleration. As the mass increases the acceleration increase and the Time Period remains constant.

8 0
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What could you include to give a sense of scale in a photograph of a mountain?
Shalnov [3]
Lighting gives a sense of scale (The sky)
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Calculate the pressure in SI unit when a force of 100 dyne acts on area of 0.02cm²​
Andru [333]

Answer:

500 Pa

Explanation:

Convert given units to SI:

100 dyne = 0.001 N

0.02 cm² = 2×10⁻⁶ m²

Pressure = force / area

P = 0.001 N / (2×10⁻⁶ m²)

P = 500 Pa

7 0
3 years ago
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