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3 years ago

11

Let’s say a 0.001kg bullet moves with a speed of 1500 m/s. A pitcher claims he can throw a 0.15 kg baseball with as much momentu

m as that bullet. How fast would he have to throw the ball for this to be true?

1 answer:

LenKa [72]3 years ago

8 0

Answer:

10m/s

Explanation:

the speed of the ball is equal to the value of the momentum of the bullet divided by the mass of the ball

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A transverse traveling wave on a cord is represented by, where D and x are in meters and t is in seconds.

yarga [219]

Answer with Explanation:

We are given that a transverse travelling wave on a cord is represented by

$D=0.51sin(6.1x+76t)$

Where D and x in meters

t(in seconds)

a.General equation of transverse wave

$y=Asin(kx+\omega t)$

By comparing we get

A=0.51

$k=6.1$

$k=\frac{2\pi}{\lambda}$

Wavelength, $\lambda=\frac{2\pi}{k}=\frac{2\pi}{6.1}=1.03$

b. $\omega=76$

Frequency, $f=\frac{\omega}{2\pi}=\frac{76}{2\pi}=12.096Hz$

c.Velocity, $v=f\lambda=12.096\times 1.03=12.46m/s$

Direction:Towards negative x- axis

d.Amplitude,A=0.51 m

e.Maximum speed, $v_{max}=A\omega=0.51\times 76=38.76 m/s$

Minimum speed, $v_{min}=0$

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4 years ago

What does the term "catastrophic event" mean to you

ozzi

Answer:

an event which took place which had such a significant impact.

Explanation:

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3 years ago

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Two bicycle tires are set rolling with the same initial speed of 4.00 m/s along a long, straight road, and the distance each tra

77julia77 [94]

Answer:

The coefficient of rolling friction for the tire under low pressure is 0.0342.

Explanation:

Two bicycle tires are set rolling with the same initial speed of 4.00 m/s

Final speed of both the bicycle, speed is reduced by half is measured, v = 2 m/s.

Here,

$u_kmg = ma\\\\a=\mu g$

Using third equation of motion as :

$v^2-u^2=2as\\\\v^2-u^2=2\mu gs\\\\\mu =\dfrac{v^2-u^2}{2gs}\\\\\mu =\dfrac{4^2-2^2}{2\times 9.8\times 17.9}\\\\\mu=0.0342$

So, the coefficient of rolling friction for the tire under low pressure is 0.0342.

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The first charged object is exerting a force on the second charged object. Is the second charged object necessarily exerting a f

mario62 [17]

Answer:

Explanation:

Of course because it's Newton's Law that if body A exerts force on body B, then body B will exert equal but opposite force on body A.

HAPPY LEARNING:)

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Why does the moon have a stronger effect on tides than the sun?

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