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3 years ago

How can you describe the path of the projectile motion?

2 answers:

8 0

Projectile motion is when an object moves in a bilaterally symmetrical, parabolic path. The path that the object follows is called its trajectory. Projectile motion only occurs when there is one force applied at the beginning, after which the only influence on the trajectory is that of gravity.

tresset_1 [31]3 years ago

5 0

Answer:

Projectile motion is a form of motion where an object moves in a bilaterally symmetrical+ parabolic path.

Explanation:

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Newton's law of universal gravitation describes the attractive force F LaTeX: F\:=\frac{Gm_1m_2}{r^2}F = G m 1 m 2 r 2 between p

vladimir1956 [14]

Answer:

Explanation:

Given;

$F=\frac{Gm_1m_2}{r^2}................(1)$

G is is the universal gravitational constant. Since G is a constant, we could rewrite equation (1) as follows;

$\frac{Fr^2}{m_1m_2}=constant (G)................(2)$

When one of the masses is altered, the force changes to a new value, say $F_2$ .

In this case it is said that $m_1$ is doubled.

Equation (2) therefore implies that we can write the following;

$\frac{Fr^2}{m_1m_2}=\frac{F_2r^2}{2m_1m_2}...........(3)$

We are assuming that all other parameters a parts from $m_1$ remain the same.

By appropriately cancelling out parameters from both side of the equation (3), we obtain the following;

$F=\frac{F_2}{2}$

The new gravitational force in terms of F is therefore'

$F_2=2F$

5 0

3 years ago

Calculate the speed (in m/sec) of a wave with a wavelength of 2.1 meters and a period of 9.4 second.

Lorico [155]

Wave speed = (wavelength) x (frequency)

We know the wavelength, but we don't know the frequency. How can we find the frequency ? "Here frequency frequency."

We know the period, and frequency is just (1 / period). So . . .

Wave speed = (wavelength) / (period)

Wave speed = (2.1 meters) / (9.4 seconds)

Wave speed = (2.1 / 9.4) m/s

Wave speed = 0.223 m/s

8 0

3 years ago

A swimmer does 3560 j of work in 55 s what is the swimmers power output?

ankoles [38]

Explanation:

Here it is given 

Work (W) = 3560 J

Time (t) = 55 sec

power (P) = ?

We know we have the formula 

 $p = \frac{w}{t}$ 

P = 3560/55

P = 64.73 watt

8 0

3 years ago

Which best describes the results of Becquerel’s experiments?

Delvig [45]

I had to look for the other details and here is my answer:

The Becquerel's experiment was done by Henri Becquerel, a French physicist, who discovered radioactivity. In this experiment, what happens is that both (refers to uranium) created images when placed in their respective places. Neither created images when placed in their respective places.

6 0

3 years ago

Read 2 more answers

Heard at a certain distance, a car horn emits a sound with a loudness of 50 dB. If instead there were 100 identical cars all sou

Nady [450]

Answer:

70db

Explanation:

If one typewriter 's sound recorded 60 dB, therefore 10 typewriters that clack away would register 70 dB (doesn't seem 600 dB!), but it would only sound double as loud as compared with one typewriter. You would gathers typesetters to strike a noise level of 80 dB and jointly they will only sound four times as loud as compared single typewriter.

So, it would be

= 20 + 50

= 70db

3 0

3 years ago