a vector must always have both size and

Answers

Answer 1

Answer:direction

Explanation:

Answer 2

A vector must always have both sizes as well as direction, while on the other hand, any scalar quantity such as the mass of an object would only have magnitude but not direction.

What is a vector quantity?

The quantities that contain the magnitude of the quantities along with the direction are known as the vector quantities.

Examples of vector quantities are displacement, velocity acceleration, force, etc.

                                                                                       

A scalar number, such as an object's mass, would only have magnitude but not direction, unlike a vector, which must always have both quantities and direction.

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Related Questions

(BRAINLIEST!) Does more momentum mean more force?

Answers

Answer:

no.

Explanation:

A current of 10 A moves through a circuit that contains multiple resistors in parallel. Which statement correctly describes the current through the resistors?
The current through all of the resistors will add up to 10 A.

The current through each resistor will be 10 A.

The current will be greatest through the resistor with the highest resistance.

The current will travel only through the resistor with the least resistance.

Answers

Answer:

The current through all of the resistors will add up to 10 A.

Explanation:

is it possible that during the big bang the laws of physics changed?

Answers

Answer:

yes, so many answers to that like possibilities

Explanation:

i watch a movie

What type of landform is depicted here? a. a mountain b. a depression c. a valley​

Answers

Answer:

b.mountain the correct answer

Explanation:

what type of ladform ids depicted here? a.a b. mountain b. a depression c. avaley

help me guyzz plzz.......​

Answers

answer:

1.When an electric current is passed through a conductor, the conductor becomes hot after some time and produce heat. This happens due to the conversion of some electric energy passing through the conductor into heat energy. This effect of electric current is called heating effect of current.

2.As per the law of combination of resistances in series,

R=R1 +R2 +R3+R4+R5

R=0.2+0.2+0.2+0.2+0.2

=1ohm

3.power is amount of electrical energy consumed per unit time. Amount of power consumed in a device is proportional to the current flowing in the device. The unit of electric power is watt.

If an object starts from rest, what is its initial velocity?

Answers

Answer:

0 m/s

Explanation:

velocity= change in displacement/ time

at rest, the ball does not travel any distance

0/ t

=0

Which 4 of the following would be considered moderate or vigorous activities?

Question 2 options:

going for a run


vacuuming


surfing


basketball


golfing with a powered Cart.


bike riding

Answers

everything but vacuuming and golfing with a powered cart

In a balanced chemical reaction, the total mass of the products always equals the
a.molar mass of the reactants.
c. total mass of the reactants.
b. atomic mass of the reactants.
d. proportional masses of the reactants.

Answers

Answer:

A balanced chemical reaction preforms the law of conservation of mass, when the total mass of the products always equals the total mass of the reactants.

Explanation:

In a balanced chemical reaction, the total mass of the products always equals the total mass of the reactants. Thus the total mass of the system is conserved.

What is mass conservation?

According to the law of conservation of mass, mass can neither be created nor be destroyed. Hence, the total mass of the system is conserved. However, mass can be transformed into equivalent energy.

The  balanced chemical equation of a reaction represents the perfect stoichiometric ratios of each reactants and products. The number of each elements in the product side must be equal to their number in the reactant side.

Therefore, the total mass of a products in a reaction is always equal to the total mass of reactants and no new atoms are created or any reactant elements are destroyed.

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1 ) Starting from rest, a toy rocket accelerates at 12 m/sec/sec for exactly 4.0 seconds. It reaches 48 m/sec. Find the distance moved.

Answers

Displacement equals (Velocity times Time) plus half times the (acceleration times time squared). =. (48 * 4) + 1/2 * (12 *12^2) = 288meters

Coach Sweeney walks 24 yards to the north along the sideline, pauses, and walks 11
yards back to the south. Determine Coach's resultant displacement.

Answers

Answer:

13 yards north.

Explanation:

Distance and Displacement

A moving object constantly travels for some distance at defined periods of time. The total moved distance is the sum of each individual distance the object traveled. It can be written as:

dtotal=d1+d2+d3+...+dn

This sum is obtained independently of the direction the object moves.

The displacement only takes into consideration the initial and final points of the path defined by the object in its moving. The displacement, unlike distance, is a vectorial magnitude and can be even zero if the object starts and ends the movement at the same point.

Coach Sweeney walks 24 yards north and 11 yards back south. If Coach Sweeney started at the origin, the first walk ends in point (0,24). After going back 11 yards, the final point is (0,13).

Since the displacement only takes the initial and final points, we can say the resultant displacement was 13 yards north.

PLLLLLLEEEEESSEEEEE HELP!!!!!!!

Answers

It is c I took the test
It is C for the question..

which equation according to ohms law

Answers

Answer: Ohm's law states that the voltage or potential difference between two points is directly proportional to the current or electricity passing through the resistance, and directly proportional to the resistance of the circuit. The formula for Ohm's law is V=IR.

with a velocity of 15 m/s, how long would it take the dog to run 100 meters?

Answers

Answer

6.66 seconds imma seem like an idiot if something like this is werong

Explanation:

dogg is speed

100/15

Answer:

6.67 s

Explanation:

Assuming that the velocity is constant, then the governing equation in this case is:

Distance = Velocity x Time

or

Time = Distance / Velocity

= 100 / 15

= 6.67 s

Peyote contains a psychotropic drug called __________.
A.
guarana
B.
mescaline
C.
salvia
D.
dynorphins

Answers

Answer:

B. Mescaline

Explanation:

Answer:

Peyote contains a psychotropic drug called mescaline

or B

Explanation:

Problem
Position The figure shows a motorcyclist traveling east along a straight
road. After passing point B, the cyclist continues to travel at an average
velocity of 18 m/s east and arrives at point C2.8 s later. What is the
position of point ?

Answers

Answer:

s = 50.4 m

Hence, the point C is 50.4 m towards east from point B

Explanation:

Since, the motorcyclist travels at a constant speed in straight line towards east after point B. Therefore, we can use the following equation in this case:

s = vt

where,

s = distance covered = position of point C = ?

v = uniform speed of motorcyclist = 18 m/s

t = time interval = 2.8 s

Therefore,

s = (18 m/s)(2.8 s)

s = 50.4 m

Hence, the point C is 50.4 m towards east from point B

What is the name of the system for conducting a scientific investigation?

1. Comparative analysis
2. Scientific Method
3. Evaluation Process
4. Trial by error

Answers

Answer:

i beleive it is 2

Explanation:

help pleasee i give brainliest

Answers

Answer:

A is a solid. C is a gas. In solid an liquid the particals are touching. In C, the particals have less affect on each other because they are so far apart.

When we look at a book in the sunlight, what must happen to the light for our eyes to see the book?

Answers

Answer:

Sometimes you can see light from the Sun passing through clouds and the sunbeams appear as straight lines. After light has been reflected off an object, such as a tree or a book, it still travels in straight lines, but in a new direction.

Explanation:

About atoms and molecules plz!?​

Answers

Answer:

Atoms: They are the smallest part of matter that may or may not exist independently. When atoms come together they form molecules.

Molecules: Many atoms combined either chemically or naturally form molecules. They are the smallest unit of matter that exist independently.

If my answer helped, kindly mark me as the brainliest!!

Thank You!!

4
The accompanying graph represents the motion of an object.
Displacement
Time
According to the graph, as time increases, the velocity of the object
A. decreases
B.
increases
C remains the same

Answers

Answer: It remains the same

What does the mass of an object depend on? A:Force of gravity B: Temperature of the object C:Time taken for an event to occur D: Amount of matter that makes up the object

Answers

Answer:

The Answer is D

Explanation:

Brainliest pls

Answer:  The answer is D) Amount of matter that makes up the object.

Explanation:  

I hope this helps,

have a great day

i took the test!

12. If you cut a wooden block in half, the density will:
A) decrease
C) stay the same
B) increase
D) not enough information

Answers

Answer:

The density will decrease over time

Explanation:

It is like when you cut cheese and leave it out for a day of two it is crusty on the outside but when you cut it in half and leave it out for the same amout of time it is even crustier than the whole one.

Hope this helps

please tell me if I'm wrong and i will try to correct my answer

C the density will stay the same

The photo shows a person pumping gasoline into a car

Which TWO of these energy transformations will occur when the car’s engine starts?

A. Chemical energy —> thermal energy

B. Chemical energy —> mechanical energy

C. Mechanical energy —> Chemical energy

D. Thermal energy —> chemical energy

_____________________
Choose TWO

Answers

Answer:

It is CHEMICAL TO MECHANICAL because gas is a chemical which is transferred to mechanical technologies

Answer:

The first one is ^^

The SECOND one is chemical energy to thermal energy

You're welcome for getting wrong so that you can now get it right :|

1. A skateboarder is skating over a circular bump. He is at the top of the bump and is
moving rightward. Is the normal force exerted on the skateboarder by the bump greater
than, less than, or equal to the weight of the skateboarder? Explain your reasoning.

Answers

Answer:

The normal force exerted on the skateboarder by the bump is less than the weight of the skateboarder

Explanation:

The given parameters are;

The location of the skateboarder = The top of the circular bump

The direction of motion of the skateboarder = Rightward

Therefore, given than the skateboarder has both horizontal angular motion (moving rightward) and vertical angular motion (over the bump), The effect of the weight of the skateboarder on the ground is reduced by the centripetal forces acting on the skateboarder and the normal force exerted on the skateboarder by the bump is equal to the reduced weight and is therefore less than the actual weight of the skateboarder.

The normal force exerted on the skateboarder is less than the weight due to the effect of centripetal force.

Given data:

The position of skateboarder is at top of the circular bump.

And direction of motion of Skateboarder is towards rightward.

Since, the skateboarder is undergoing the motion over the circular path, then it will have both horizontal angular motion (moving rightward) and vertical angular motion (over the bump).

The effect of the weight of the skateboarder on the ground is reduced by the centripetal forces acting on the skateboarder and the normal force exerted on the skateboarder by the bump is equal to the reduced weight and is therefore less than the actual weight of the skateboarder.

Thus, we can conclude that the normal force exerted on the skateboarder is less than the weight due to the effect of centripetal force.

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Which is not a reason why the mass of an atom is expressed in atomic mass units rather than in grams?

Scientists could not agree on a standard.

Atomic mass allows for mass differences in isotopes.

The mass in grams is too small to be useful.

Atomic mass units make it easier to compare the masses of atoms.

Answers

Answer:

A. scientists could not agree

Answer:

scientists could not agree on a standard

Using the law of conservation of energy, what is the kinetic energy at B? K.E. = 3, 6, or 4.8

Answers

Answer:

3

Explanation:

what is matter and explain ?​

Answers

Answer:

It is a physical matter that takes up all things.

Explanation:

By take up i mean structures and properties. Let me know you if have more questions about matter :D

in summer, it is cooler in the ground floor than in the top floor of a building. it is because the warm air rises up due to convention. why does warm air rises up? ​

Answers

Answer:

because heat evaporates water

Explanation:

Which two chemists organized elements based on properties such as how the elements react or whether they are solid or liquid?

Lavoisier and Mendeleev
Döbereiner and Newlands
Newlands and Mendeleev
Lavoisier and Döbereiner

Answers

Answer:

The chemists that organized elements based on properties such as how the elements react or whether they are solid or liquid are Lavoisier and Dobereiner

Lavoisier basis of theory is on the various properties of metals, nonmetals and gases.

Dobereiner  gave the law of triads. In this theory the middle element is the average of the other two elements.

Answer:

d.   Lavoisier and Döbereiner

Explanation:

The force needed to stop an object in motion is called?

Answers

force called friction

The force applied to object to stop its motion is known as frictional force.

Newton's first law of motion states that an object in a state of rest or uniform motion in a straight line, we continue in that form unless it is acted upon by an external force. This reluctance of an object to move or stop moving is known as the object's inertia. This inertia depends on the mass of the object.

When an object is finally in motion, the friction, between the object and the surface on which it is moving tends to limit the motion.

Thus, to stop an object in motion, we increase the frictional force between the object and the surface on which the object is moving

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