1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alona [7]
3 years ago
12

Can be a vector scalar ?​

Physics
2 answers:
xz_007 [3.2K]3 years ago
7 0

Answer:

No, scalar and vector quantities are two different categories of a quantity.

So vector could not be considered to be scalar too.

<em>But turning a vector to a scalar is possible</em>. Only remove the direction of movement.

dimaraw [331]3 years ago
6 0

A scalar has only its magnitude, whereas a vector has a magnitude, a line where it lies, and a direction it points along that line.

The only way to associate vectors and scalars is to think of vector as of arrays of numbers. For example, this (2, 3, 5) is a vector in \mathbb{R}^3.

Under this logic, scalars are just vectors with dimension 1.

You might be interested in
A glass is half-full of water, with a layer of vegetable oil (n 5 1.47) fl oating on top. a ray of light traveling downward throu
leva [86]
The critical angle is the angle of incidence which gives 90 degrees refraction of light. If the incident angle is less than the critical angle, the ray of light will penetrate the second medium and if the incident angle is more than the critical angle, the ray will not penetrate and total internal reflection will occur.

So, to decide whether the ray will penetrate or not, we need to calculate the critical angle and compare it with the incident angle.

critical angle is calculated using the following rule:
critical angle = arcsin (n2 / n1) where
n1 is that of the oil = 1.47
n2 is that of the water = 1.33
therefore,
critical angle =  arcsin (1.33 / 1.47) = 64.79 degree

Since the incident angle is greater than the critical angle, therefore the ray will not penetrate and will undergo total internal reflection.
6 0
4 years ago
A 3 kg block is placed at the top of a track consisting of two frictionless quarter circles of radius R equal to 2 m connected b
amid [387]

Answer:

6m

Explanation:

The initial potential energy of the block P.E =mgh

where mass m = 3kg

g= 9.81 m/s2

h = 2m

Hence P.E = 3*9.81*2 = 58.8 Joules

This energy converts to kinetic energy when the block is released from the top

K.E = mv^2/2 = 58.8

Solving for v, we obtain 6.26 m/s

The acceleration of the block by Newton's second law of motion,

ma = (μk)*mg

where μk = 0.1

Hence, a = 0.1*9.81 = 0.98m/s/s

Applying Newton's second equation of motion to solve,

v^2 - u^2 =2as

where u = 0 m/s (released from rest0

Hence, 6.26^2 = 2*0.98*s

Solving for s,

s= 20m

Therefore, the distance after two complete cycles = 20 -2(7) = 6m

4 0
3 years ago
You are driving along the New York State Thruway in a line of cars all travelling at a constant speed of 108.5 km/hr. The car in
IgorC [24]

Answer:

Car first should be 30.13 m behind the second car.

Explanation:

Given that,

Constant speed = 108.5 Km/hr

Time = 1 sec

Let the distance covered by second car S and by first car S'

We need to calculate the distance covered by second car

Using equation of motion

S=ut-\dfrac{1}{2}at^2.....(I)

The distance covered by first car to avoid collision

S''=S'+S

Put the value into the formula

S'+S=ut+ut-\dfrac{1}{2}at^2...(II)

We need to calculate the distance covered by first car

Using equation (I) and (II)

S'=ut

Put the value into the formula

S'=108.5\times\dfrac{5}{18}\times1

S'=30.13\ m

Hence, Car first should be 30.13 m behind the second car.

7 0
3 years ago
what type of energy appears when a gymnast jumps on to a spring board? Question is on energy stores!Thanks
Brrunno [24]
Hello There!

It is Spring potential energy. Also called Elastic potential energy.

Hope This Helps You!
Good Luck :) 

- Hannah ❤
5 0
3 years ago
What Happens when a warm fluid cools down
tiny-mole [99]
Energy is released to the environment. 
7 0
3 years ago
Other questions:
  • the gravitational force between two objects is 45000 N. what will be the gravitational force between the two objects if the dist
    15·2 answers
  • COURCES
    6·1 answer
  • When a rubber ball is thrown against a wall, energy is transferred and transformed. Select the
    13·1 answer
  • What are three ways in which people use microwaves
    7·2 answers
  • Gravitational force f exists between oint objects a and b seperated by distance r. if the mass of a is doubled and the distance
    14·1 answer
  • To determine if an object is in motion, you must use a __________. Question 1 options: Moving object Living thing Frame of Refer
    10·1 answer
  • Could someone help me
    12·1 answer
  • A force of 20 N compresses a spring with a spring constant 50 N/m. How much energy is stored in the spring?
    13·1 answer
  • Describe the sequence of mechanical energy events that lets you hear the
    9·1 answer
  • The current movement of air or water is a result of what action
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!