3 years ago

The atomic number tells how many _____ are in the nucleus

Physics

1 answer:

maria [59]3 years ago

4 0

Answer:

1 because I looked it up for sure

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A gun can fire a bullet at 540 m/s. If the gun is aimed at an angle of 55o above the horizontal and fired, what will be the hori

lisabon 2012 [21]

Answer:

Explanation:

The <u>initial</u> vertical velocity is 540sin55° = 442.342103... 442 m/s

The <u>initial</u> horizontal velocity is 540cos55° = 309.731275... 310 m/s

In the real world, both initial velocities would be reduced by air resistance and vertical velocity will be altered by gravity.

5 0

3 years ago

A billiard ball is moving in the x-direction at 30.0 cm/s and strikes another billiard ball moving in the y-direction at 40.0 cm

ipn [44]

To solve this problem it is necessary to apply the trigonometric ratios of the given velocity components.

If we make a graph of the velocity vectors in their respective velocities according to the given description we will have something similar to the attached graph.

The angle could be obtained from the components of the opposite leg and the adjacent leg so that

$tan\theta = \frac{x}{y}$

$\theta = tan^{-1}(\frac{x}{y})$

The opposite leg value (y) is 40cm / s and the adjacent leg (x) is 30cm / s

$\theta = tan^{-1}(\frac{30}{40})$

$\theta = 36.87\°$

Therefore the final direction that does the first ball is 36.87°

6 0

3 years ago

Which category best describes this group of shapes? rhombuses rectangles parallelograms squares II

anyanavicka [17]

they're parallelograms

7 0

3 years ago

In Scientific Notation, numbers are written in the form a x 10b . In this form, b is called the

ivann1987 [24]

Answer:

b is called the power of base 10.

Explanation:

In the scientific notation form

$a\,\,10^b$

the exponent b is called the power of the base 10.

3 0

3 years ago

If there is a net force on an object in the direction it is already moving, what has to happen to the speed of the object?

baherus [9]

Net force is an unbalanced force, so the object will change speed or direction.
Either the object may speed up or slow down.

8 0

4 years ago