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MariettaO [177]
3 years ago
11

If there is a negative sign in front of the Hooke's Law equation, what does the force, F, represent?

Physics
1 answer:
SashulF [63]3 years ago
6 0

Answer:

Hooke's law, given by F=-kx is denoted with a negative sign to regard that the direction of restoring force that occurs opposite in direction of the force that caused the displacement x. F represents the force required to create a spring displacement of x.

Explanation:

As with many things in physics, the negative sign represents direction. In this case, after a spring is displaced a distance of x from equilibrium, the restoring force created by the spring will be in opposite direction of the force applied to move the spring there, represented by F.

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When sound is created it travels to the car through a
Rasek [7]

A sound wave is a longitudinal wave caused by vibrations and carried through a substance. The particles of the substance, such as air particles, vibrate back and forth along the path that the sound waves travel. Sound is transmitted through the vibrations and collisions of the particles.

This could maybe help you with your answer.

4 0
3 years ago
A passenger on a moving train walks at a speed of 1.40 m/s due north relative to the train. The train is traveling at 3.5 m/s du
Alex17521 [72]

Answer:

v= 4.9 m/s in east direction ( or  v=4.9 m/s * i )

Explanation:

Since the passenger moves along the train ( in the north direction relative to the train) then if the train is traveling east relative to the ground , the passenger will also travel to the east relative to the ground .  

Then the magnitude of the velocity will be

v= 1.40 m/S + 3.5 m/s = 4.9 m/s

v= 4.9 m/s

and the direction will be east ( if the x axis represents east direction and y-axis the north direction , then the velocity vector will be  v=4.9 m/s * i )

4 0
3 years ago
Read the scenario and solve these two problems. When traveling at top speed, a roller coaster train with a mass of 12,000 kg has
andreev551 [17]
First answer  5400000 
second answer 46
4 0
3 years ago
Read 2 more answers
5) [Honors]A seagull, ascending straight upward at 5.2 m/s, drops a shell when it is 12.5m above the ground. (A)
jolli1 [7]

Answer:

(B) 13.9 m

(C) 1.06 s

Explanation:

Given:

v₀ = 5.2 m/s

y₀ = 12.5 m

(A) The acceleration in free fall is -9.8 m/s².

(B) At maximum height, v = 0 m/s.

v² = v₀² + 2aΔy

(0 m/s)² = (5.2 m/s)² + 2 (-9.8 m/s²) (y − 12.5 m)

y = 13.9 m

(C) When the shell returns to a height of 12.5 m, the final velocity v is -5.2 m/s.

v = at + v₀

-5.2 m/s = (-9.8 m/s²) t + 5.2 m/s

t = 1.06 s

3 0
3 years ago
an oscilloscope has a time/div setting of 50ms and there are 10 divisions on the time scale. a sine wave on the oscilloscope dis
mamaluj [8]

Answer:

The frequency is f = 6Hz

Explanation:

Given

         The time division  setting is  d_t =50ms = 50*10^{-3}s

         The number of division is  n= 10

The total time for 10 division can be mathematically obtained as

         T_{total} = 10 *50*10^{-3}

                 =500 *10^{-3}s

From the question the time for 3 cycle is

        T_{total} = 500*10^{-3}s

Then the for one cycle which equivalent to the Period(T)  =  \frac{T_{total}}{3}

                                                               = \frac{500 *10^{-3}}{3}

The frequency is generally given as    f = \frac{1}{period} = \frac{1}{T}

    Now substituting values we have  

                              f = \frac{3}{500 *10^{-3}}

                                 = 6Hz

                 

4 0
4 years ago
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