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4 years ago

Silicon sodium krypton potassium. which has the least metalic character

1 answer:

3 0

Krypton is the least metallic. Because it is a noble gas. The elements go from left to right in order of most to least metallic. Krypton is the farthest right out of all of the elements you listed.

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As a projectile moves in its path, is there any point along the path where the velocity and acceleration vectors are:(a) perpend

nika2105 [10]

Answer:

at the highest point the velocity and acceleration are perpendicular but when projectile starts to move are said to be parallel to one another

Explanation:

the clear explanation is shown above.

6 0

3 years ago

An electron emitted from a filament is travelling at 1.5 x 105 m/s when it enters an acceleration of an electron gun in a televi

Crank

Answer:

The acceleration of the electron is 1.457 x 10¹⁵ m/s².

Explanation:

Given;

initial velocity of the emitted electron, u = 1.5 x 10⁵ m/s

distance traveled by the electron, d = 0.01 m

final velocity of the electron, v = 5.4 x 10⁶ m/s

The acceleration of the electron is calculated as;

v² = u² + 2ad

(5.4 x 10⁶)² = (1.5 x 10⁵)² + (2 x 0.01)a

(2 x 0.01)a = (5.4 x 10⁶)² - (1.5 x 10⁵)²

(2 x 0.01)a = 2.91375 x 10¹³

$a = \frac{2.91375 \ \times \ 10^{13}}{2 \ \times \ 0.01} \\\\a = 1.457 \ \times \ 10^{15} \ m/s^2$

Therefore, the acceleration of the electron is 1.457 x 10¹⁵ m/s².

7 0

3 years ago

Can a body move with a certain velocity in the direction of the east have acceleration in the direction of the west?

levacccp [35]

Answer:
Yes, a body with a certain velocity can have an opposite acceleration, the acceleration would then be negative, since it is opposite to the direction to the velocity and also because the direction in which the acceleration is portrayed is on the left-hand side.

Hope this answer helps :)

7 0

4 years ago

Suppose air resistance does not exist, roughly what would be the velocity of a 10 lb object 5-seconds into free fall off of a 50

ira [324]

Answer:

Correct answer : v = 50 m/s

Explanation:

The movement described is a free fall with no initial velocity and we will use the following formula:

v = g · t we take that g = 10 m/s²

v = 10 m/s²· 5 s = 50 m/s

v = 50 m/s

God is with you!!!

4 0

4 years ago

Please Help!!! Max points!!!!!!

svp [43]

Answer:

some kind of change

motion

KE = 1/2 m v^2

velocity

drag/air resistance

size

shape

Explanation:

8 0

3 years ago