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
Marysya12 [62]
3 years ago
10

Identify each of the quantities below as either vector or scalar

Physics
1 answer:
natta225 [31]3 years ago
7 0

Answer:

2nd answer 3.2m/s is a scalar l, all others are vectors.

Explanation:

In order to be considered as a vector a certain quantity must have both a magnitude and a direction.

The most common example is velocity. It has both magnitude and direction, like the 1st and the last answers.

The 3rd answer is an acceleration. It is also given with its direction. So we have to consider it also as a vector.

But 2nd answer has no direction mentioned, so it is considered as a scalar.

You might be interested in
The global positioning system (GPS) uses electromagnetic waves sent between computer devices on Earth and satellites in space to
zhenek [66]

Answer:

first plz mark brarinlest

Explanation:

5 0
3 years ago
Read 2 more answers
Which of the following is a transformer used for?
mamaluj [8]

A transformer is used to increase or decrease a voltage.  BUT ... it has to be an AC voltage, or the transformer doesn't work.

5 0
3 years ago
Read 2 more answers
A 300 g ball and a 600 g ball are connected by a 40-cm-lon massless, rigid rod. The structure rotates about its center of me at
Readme [11.4K]

Answer:

 KE = 1.75 J

Explanation:

given,

mass of ball, m₁ = 300 g = 0.3 Kg

mass of ball 2, m₂ = 600 g = 0.6 Kg

length of the rod = 40 cm = 0.4 m

Angular speed = 100 rpm= 100\times \dfrac{2\pi}{60}

                         =10.47\ rad/s

now, finding the position of center of mass of the system

    r₁ + r₂ = 0.4 m.....(1)

 equating momentum about center of mass

  m₁r₁ = m₂ r₂

   0.3 x r₁ = 0.6 r₂

   r₁ = 2 r₂

Putting value in equation 1

2 r₂ + r₂ = 0.4

 r₂ = 0.4/3

 r₁ = 0.8/3

now, calculation of rotational energy

KE = \dfrac{1}{2}I_1\omega^2+\dfrac{1}{2}I_2\omega^2

KE = \dfrac{1}{2}\omega^2 (I_1 +I_2)

KE = \dfrac{1}{2}\omega^2 (m_1r_1^2 +m_2r^2_2)

KE = \dfrac{1}{2}\times 10.47^2(0.3\times (0.8/3)^2 +0.6\times (0.4/3)^2)

 KE = 1.75 J

the rotational kinetic energy is equal to 1.75 J

7 0
4 years ago
Explain how electric currents flow only in closed circuits​
Fed [463]

Answer:

The wires are connected to both terminals of the battery, so they form a closed loop. Most circuits have devices such as light bulbs that convert electrical energy to other forms of energy. ... When the switch is turned on, the circuit is closed and current can flow through it.

Explanation:

4 0
3 years ago
Read 2 more answers
A periodic wave has a fixed pattern that is repeated. What is one completion of the wave pattern called?
Kaylis [27]
It is called cycle. Letter D
7 0
3 years ago
Other questions:
  • A 1200 w microwave oven transforms 1.8x10(to the power of 5) J of energy while reheating some food. Calculate how long the food
    5·1 answer
  • A force is directly proportional to what ?
    7·1 answer
  • Which of the following is a vector quantity?
    14·1 answer
  • As a delivery truck travels along a level stretch of road with constant speed, most of the power developed by the engine is used
    11·1 answer
  • What is acceleration?
    14·1 answer
  • PLEASE HELP ASAPPPPPPPPP
    13·1 answer
  • Help me, please with this queastion
    15·1 answer
  • What is the kinetic energy of a 14kg object traveling at 10m/s
    15·1 answer
  • How does the scientific meaning of the words work, energy, force and efficiency compare to their every day meaning? State the si
    13·1 answer
  • 1) What is the difference between acceleration and velocity? Write a paragraph that would make sense to a 5th grader.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!