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3 years ago

The position-time equation for a cheetah chasing an antelope is:

Physics

1 answer:

pochemuha3 years ago

4 0

Answer:

x = 1.6 + 1.7 t^2 omitting signs

a) at t = 0 x = 1.6 m

b) V = d x / d t = 3.4 t

at t = 0 V = 0

c) A = d^2 x / d t^2 = 3.4 (at t = 0 A = 3.4 m/s^2)

d) x = 1.6 + 1.7 * (4.4)^2 = 34.5 (position at 4.4 sec = 34.5 m)

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According to Coulomb's law, if the separation between two particles of the same charge increases four times, the potential energ

Lera25 [3.4K]

Answer:

c. V = k Q1 * Q2 / R1 potential energy of Q1 and Q2 separated by R

V2 / V1 = (R1 / R2) = 1/4

V2 = V1 / 4

8 0

3 years ago

What does the horizontal line through the center of the wave on a graph represent?

aleksandrvk [35]

Answer:

This is the midline or the medium which is the exact middle of the graphs minimum and maximum points(which are the amplitude)

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3 years ago

What is the angle o in the triangle below? (Hint: Use an inverse trigonometric function.)

Shalnov [3]

Answer:

D. 66.4

Explanation:

So this problem uses SOHCAHTOA or the three trig functions.

Specifically this uses cosine, because it has an adjacent and a hypotenuse.

First you would determine what to do on the calculator, and since the problem is saying so, use the inverse cosine button. This will give you a angle measure from the decimal.

On a calculator, type in cos^-1(6/15). I used 6/15 because cosine is adjacent over hypotenuse. This will give you 66.4, which is D on the answers.

5 0

4 years ago

Why can't baking soda dissolve in cold water than in warm water?

JulijaS [17]

Answer:

Because the sodium bicarbonate does not separate into sodium, hydrogen, carbon and oxygen

Explanation:

The components of sodium bicarbonate differ in their solubilities in water.baking soda is sodium bicarbonate.

3 0

2 years ago

Write the equation of a wave traveling along the +x-axis with an amplitude of 0.02 m, a frequency of 440 Hz, and a speed of 330m

Airida [17]

The equation of the wave travelling along the +x-axis is y = 0.02 sin (880π/330 x – 880 πt)

Explanation:

Given data

Amplitude 0.02 m , Frequency= 440 Hz ,Speed = 330 m/s

The equation format is written as,

y = A sin ( k x – ω t)

We need the value of A, k, x -ω t

1. Find the k value

v = f ×λ

330 = 440×λ

k = 2π×λ

k = 880 π /330 m-1

440 ×2π = w

2. Find the ω value

f×2π =ω

ω = 880 π s-1

3. Find the A value

we get A value from the given data

A = 0.02 m

By the formula,

y = A sin ( k x – ω t)

Substitute the values we get the equation,

y = 0.02 sin (880π/330 x – 880 πt)

The equation of the wave travelling along the +x-axis is y = 0.02 sin (880π/330 x – 880 πt)

8 0

3 years ago