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3 years ago

What is the distance an object travels and the direction of its motion from starting point?

1 answer:

6 0

Answer: Well you didn't give any answers so my guess would be it depends how much force you put into it and where you throw it.

Explanation:

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Which diagram represents magnetic field lines between two north magnetic poles?

masya89 [10]

Magnetic field lines come from North pole and goes to south pole, as there are two north poles, they will be going from both the poles.

In short, Your Answer would be Option 4

Hope this helps!

3 0

3 years ago

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A mouse ran 25 meters in 5 seconds, stopped for 10 seconds to eat a piece of cheese, and finally ran another 5 seconds a distanc

Mkey [24]

Answer:

It ran at an average of 2 meters per second.

Explanation:

6 0

3 years ago

When the C4 key on a piano keyboard is pressed, a string inside the piano is struck by a hammer and begins vibrating back and fo

Anettt [7]

Answer:

Frequency = 260 Hz and wavelength = 1.31 m

Explanation:

Given that,

A hammer begins vibrating back and forth at approximately 260 cycles per second.

(a) The frequency of an object is the number of vibrations per unit time. The frequency of the sound wave is 260 Hz.

(b) The speed of sound in air is 343 m/s. So,

$v=f\lambda\\\\\lambda=\dfrac{v}{f}\\\\\lambda=\dfrac{343}{260}\\\\\lambda=1.31\ m$

Hence, this is the required solution.

8 0

3 years ago

Newton's First Law of Motion states that an object will remain at rest or in uniform motion in a straight line unless acted upon

Leno4ka [110]

Law of inertia would be your answer.

4 0

4 years ago

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Two people are standing on a 3.12-m-long platform, one at each end. The platform floats parallel to the ground on a cushion of a

Ann [662]

Answer:

The magnitude of displacement is 0.082m

Explanation:

While the ball is in motion,we have MV + mv= 0 ...eq1

Where M = combined mass of the platform and the two people.

V = velocity of the platform

m = mass of the ball

v = velocity of the ball

The distance that the platform moves is given by:

X = Vt ...eq2

Where t is the time that the ball is in the air.

The time the ball is in the air is given by:

L/(v-V) ...eq3

Where L is the length of the platform

The quantity(v-V) = velocity of the ball relative to the platform.

Combining eq2 and eq3

X = (V/(v - V))L

From eq1 , the ratios of the velocities is V/v = -m/M

X = (V/v)L / (1 - (V/v) = (-m/M) L /(1+ (m/M))

X = -mL/(M + m)

X = - (3.36kg × 3.12m) /( 119kg + 3.36kg)

X = - 10.48/ 122.36

X = -0.082m

The minus sign implies that the displacement of the platform is in the opposite direction to the displacement of the ball.

Therefore, the distance moved by the platform is the magnitude of this displacement 0.082m.

7 0

3 years ago

Read 2 more answers