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4 years ago

According to Newton’s first law of motion, what will an object in motion do when no external force acts on it?

2 answers:

Colt1911 [192]4 years ago

6 0

An object will continue in constant, uniform motion (in a straight
line at constant speed) until acted on by a net external force.

The speed may just as well be zero. That covers the separate case
that people always want to add, of "an object at rest".

KonstantinChe [14]4 years ago

4 0

By definition, we have to:

Newton's first law states that any object will remain in a state of rest or with a uniform rectilinear motion unless an external force acts on it.

Therefore, according to the first law of Newton, if the object is already in motion and has no force acting on it then, it will remain with a uniform rectilinear motion.

Answer:

The object will remain with a uniform rectilinear movement when the external force does not act on it.

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A transverse wave is set up in a very long string. The oscillator is set at 20.0 Hz, and the wave speed is 78 m/s. The amplitude

Sedbober [7]

To solve this problem we must apply the concepts related to Tangential Acceleration based on angular velocity and acceleration, and therefore, we must also calculate angular velocity based on the given frequency. For all these problems we will take the Units to the International System. The maximum acceleration would then be defined as,

$a_{max} = \omega^2 A$

Here,

$\omega$ = Angular velocity

A = Amplitude

At the same time the angular velocity is described as,

$\omega = 2\pi f$

Here f means the frequency of the wave. Substituting,

$\omega = 2 \pi (20)$

$\omega = 40\pi$

$A = 5.2cm$

$A = 0.052m$

Replacing at the first equation,

$a_{max} = (40\pi )^2 (0.052)$

$a_{max} = 821.15m/s^2$

Therefore the maximum particle acceleration for a point on the string is $821.15m/s^2$

6 0

4 years ago

The driver of a car slams on the brakes, causing the car to

zubka84 [21]

It takes 4.58 seconds for the car to stop and the initial speed of the car is 77.14 ft/s

Explanation:

Given:

Acceleration, a = -17 ft/s²

Distance, s = 175 ft

Final velocity, v = 0

Time, t = ?

Initial speed, u = ?

We know:

v² - u² = 2as

(0)² - (u)² = 2 X - 17 X 175

u² = 5950

u = 77.14 ft/s

To calculate time:

v = u + at

0 = 77.14 - 17 X t

17t = 77.14

t = 4.58 sec

Therefore, It takes 4.58 seconds for the car to stop and the initial speed of the car is 77.14 ft/s

5 0

3 years ago

Silver solder is a mixture of 40 percent silver , 40 percent tin , 14 percent copper, and 6 percent zinc. Draw a graph that show

Step2247 [10]

Use a pie graph to do this, it will be the most accurate to put the percentages.

4 0

4 years ago

Describe how the amount of heat released or absorbed related to specific heat capacity and amount of it? A) Amount of heat absor

tatiyna

The correct answer is C): Amount of heat absorbed or released is doubled if quantity is doubled. If a different substance with half the specific heat capacity is used, the amount of heat absorbed or released is cut in half.

Let's see why. the amount of heat Q absorbed or released is given by
 $Q= m C_s \Delta T$
where m is the mass (so, the quantity of the substance), Cs is the specific heat of the substance and $\Delta T$ is the variation of temperature.

We can see from this formula that Q is directly proportional to both m and Cs. Therefore:
- If the amount of heat Q is doubled, m is also doubled
- If the specifice heat of the new substance is half of the original one, then Q is also cut in half.

4 0

3 years ago

Read 2 more answers

In a symbiotic relationship,

kondaur [170]

Answer: A

Explanation:Symbiosis is a close relationship between two species in which at least one species benefits.

Hope this helps!Brainlist?plz

3 0

3 years ago