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Nadusha1986 [10]
3 years ago
11

What does it mean tha velocity is vector quantity

Physics
1 answer:
Wewaii [24]3 years ago
7 0
It means that velocity not only has a size, but it also has a direction.

Some other vector quantities are force and acceleration.
They have sizes and directions.
 
Temperature, cost, and weight are quantities with only size and no direction.
Those are called "scalar" quantities.
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Which equation represents a neutralization reaction?
elixir [45]

B  acid + base    →  water + salt

Explanation:

The best equation that represents a neutralization reaction is:

                      acid + base    →  water + salt

In a neutralization reaction, an acid reacts with a base to produce salt and water only.

Here, hydrogen combines with hydroxide to form water.

Titration is usually used to carry out this reaction in the laboratory.

An indicator is added to the base and at end the color of the reaction changes.

At this point the acids have completely been neutralized with the base.

Learn more:

Neutralization brainly.com/question/4455839

#learnwithBrainly

5 0
3 years ago
A pendulum consists of a 1.7-kg block hanging on a 1.6-m length string. A 0.01-kg bullet moving with a horizontal velocity of 82
Rzqust [24]

Answer:

0.42 m

Explanation:

mass of pendulum, M = 1.7 kg

Length of pendulum , l = 1.6 m

mass of bullet, m = 0.01 kg

initial velocity of bullet, u = 828 m/s

final velocity of bullet, v = 340 m/s

initial velocity of pendulum, U = 0

Let the final velocity of pendulum is V.

Use conservation of momentum for bullet and the pendulum

m x u + M x U = m x v + M x V

0.01 x 828 + 1.7 x 0 = 0.01 x 340 + 1.7 x V

8.28 + 0 = 3.4 = 1.7 V

V = 2.87 m/s

Now the kinetic energy of the pendulum is converted into potential energy of pendulum and let it raised to a height of h from the initial level.

Use energy conservation

Kinetic energy of the pendulum  = potential energy of the pendulum

0.5 x M x V² = M x g x h

0.5 x 2.87 x 2.87 = 9.8 x h

h = 0.42 m

6 0
3 years ago
after a cannonball is fired into frictionless space, the amount of force needed to keep it going equals​
abruzzese [7]

Answer:

0 N

Explanation:

According to Newton's first law of motion, an object in motion stays in motion until acted upon by an unbalanced force.  With no friction in space to unbalance the cannonball, it will continue to keep going.

7 0
3 years ago
Given that R1 is 13 Ω, R2 is 10 Ω, and R3 is 4 Ω, what is the current coming out of the 9-V battery? What is the power dissipati
Kisachek [45]
So sorry I need point good luck
8 0
3 years ago
Please answer offering a lot of points and give brainliest pleaseeeee
asambeis [7]

23 is the right answer.

3 0
3 years ago
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