Whats the answer???????????????????????

Physics

1 answer:

murzikaleks [220]3 years ago

4 0

The answer is 30 ... same as the Atomic number.

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A rocket is fired vertically upward. At the

Galina-37 [17]

Answer:

767.6 m/s

Explanation:

We consider momentum in both x and y components

Since momentum, p=mv where m denote mass while v is velocity then

In the y direction

3m*288=279m+my

y=585 m/s

In the x direction and taking right as positive then

3m*288=367m+mx

x=497 m/s

The resultant gives the velocity of the third fragment

$Third=\sqrt{585^{2}+497^{2}}=767.6157893\approx 767.6 m/s$

6 0

3 years ago

hello:) I don’t really understand this graph. I thought uniform acceleration means the velocity is constant so it’s a constant g

Shkiper50 [21]

Answer:

Uniform acceleration means that the object is accelerating at a constant rate. Since there is still acceleration, velocity is not constant. In fact, the velocity is increasing. This means that the object is moving faster and faster at a constant rate.

This graph is a displacement-time graph so its gradient would represent the velocity of the object. The velocity increases hence the gradient should increase (which means that the graph must be steeper and steeper with increasing time).

Constant gradient of a displacement-time graph would mean that there is no acceleration since gradient of the graph does not change so velocity is constant.

Note that it is the rate of change of velocity that is constant during uniform acceleration, not velocity.

5 0

3 years ago

Yellow light travels through a certain glass block at a speed of 1.97 × 108 m/s. The wavelength of the light in this particular

Andre45 [30]

The frequency of the yellow light is $5.17\cdot 10^{14}Hz$