Velocity is the combination of which of the following? speed and momentum
force and direction
gravity and direction
speed and direction

Answers

Answer 1

Answer: speed and direction c:

Answer 2

Answer:

speed and direction c:

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Looking at the periodic table, which of these elements has the smallest atomic radius?A. sodium
B. potassium
C. hydrogen
D. lithium

Answers

Answer: C. hydrogen

Explanation:

Atomic radius of an atom is defined as the total distance from the nucleus to the outermost orbital of electron.

On moving from top to bottom, there is an addition of shell around the nucleus and the outermost orbital gets far away from the nucleus and hence, the distance between the nucleus and outermost orbital increases.

This in turn increases the atomic radii of the element from moving top to bottom in a group.

$H:1:1s^1$

$Li:3:1s^22s^1$

$Na:11:1s^22s^22p^63s^1$

$K:19:1s^22s^22p^63s^23p^64s^1$

hydrogen which has 0.79

How do I solve this?? ok having a hard time BRAINLIST

Answers

Answer:

1) 6(1/2)

2) 8(4/5)

Explanation:

1) 7 - 1/2 = 7/1 - 1/2 = 14/2 - 1/2 = 13/2 = 6(1/2)

2) 11(2/5) - 2(3/5) = 57/5 - 13/5 = 44/5 = 8(4/5)

Imagine a pulley system with four fixed and four moveable pulleys. What would be the mechanical advantage of this system?

Answers

The perfect mechanical advantage is four rope segments. This indicates that the compound pulley increases the applied force by a factor of four. For instance, the pulley would exert 1600 Newtons of force on the load if 400 Newtons of force were given to it.

What is force ?

A force is an influence that has the power to alter an object's motion. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

Mechanically speaking, a moving pulley has a 2 advantage. The force needed to move any object that is linked to a moving pulley will therefore be halved. This occurs as a result of the rope's fixed end in a moving pulley absorbing some of the force needed to move the object.

Thus, the pulley would exert 1600 Newtons of force on the load if 400 Newtons of force were given to it.

To learn more about the force, follow the link;

brainly.com/question/13191643

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a fixed pulley is a load multiplier and a movable multiplier is a speed multiplier

What is matter im confused