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
Mila [183]
3 years ago
6

Consider a car that travels between points A and B. The car's average speed can be greater than the magnitude of its average vel

ocity, but the magnitude of its average velocity can never be greater than its average speed. A) True B) False
Physics
1 answer:
ryzh [129]3 years ago
4 0

Answer: A.True

Explanation: simply put the magnitude of the speed is a function of Distance while the magnitude of velocity is a function of Displacement. Displacement is the average Distance moved in different directions which will be smaller in magnitude compared to the Total Distance used the calculating the magnitude of speed.

You might be interested in
Ability of the muscles to function effectively and efficiently without undue fatigue
AveGali [126]

Answer:

Physical fitness

Explanation:

7 0
3 years ago
1.Calculate the energy transferred by a 12V hairdryer, running on a current of 0.50A, that is left on for 8.0 minutes.
CaHeK987 [17]

Answer:

1. Energy = 2880 Joules.

2. Energy = 60 Joules.

3. Quantity of charge = 120 Coulombs.

Explanation:

Given the following data;

1. Voltage = 12 Volts

Current = 0.5 Amps

Time, t = 8 mins to seconds = 8 * 60 = 480 seconds

To find the energy;

Power = current * voltage

Power = 12 * 0.5

Power = 6 Watts

Next, we find the energy transferred;

Energy = power * time

Energy = 6 * 480

Energy = 2880 Joules

2. Charge, Q = 4 coulombs

Potential difference, p.d = 15V

To find the total energy transferred;

Energy = Q * p.d

Energy = 4 * 15

Energy = 60 Joules

3. Voltage = 6 Volts

Current = 1 Amps

Time = 2 minutes to seconds = 2 * 60 = 120 seconds

To find the quantity of charge;

Quantity of charge = current * time

Quantity of charge = 1 * 120

Quantity of charge = 120 Coulombs

8 0
3 years ago
Starting from rest, a 2.1x10^-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exert
Rainbow [258]

Answer:

a) The flea's speed when it leaves the ground is v=1.88m/s

b) The flea move 18cm upward while it is pushing off

Explanation:

Hi

<u>Knwons</u>

Mass m=2.1\times 10^{-4} kg, Work W=3.7\times 10^{-4} J and Force F=0.41N

a) Here we are going to use W=\frac{1}{2} mv^{2}, so v=\sqrt{\frac{2W}{m} }= \sqrt{\frac{2(3.7\times 10^{-4} J)}{2.1\times 10^{-4} kg} }=1.88m/s

a) Here we are going to use W=mgh, so h=\frac{W}{mg}= \frac{3.7\times 10^{-4} J}{(2.1\times 10^{-4} kg)(9.8m/s^{2})} =0,1797m or 18cm approx.

7 0
3 years ago
True or false cells of humans and plants are same.​
timama [110]
False, we lack cell walls whereas they have cell walls.
4 0
2 years ago
susan and joe push a table 18 meters down a hall by exerting a force of 200 newtons (n). what is the total amount of work done o
prisoha [69]

Answer:

3600joules

Explanation:

formula :W=FS

W=work done (J)

F=force (N)

S=displacement moved in the direction of force (m)

200N×18m

=3600J

3 0
2 years ago
Other questions:
  • Why is rolling a ball down a hill considered an unbalanced force?
    8·2 answers
  • Consider two identical springs. At the start of an experiment, Spring A is already stretched out 3 cm, while Spring B remains at
    12·1 answer
  • If the sun is a medium sized star, why does it look bigger than others?
    11·2 answers
  • Does thermal energy flow from warmer objects to cooler objects
    11·2 answers
  • what happens to the current in a circuit if the resitance of the components in the circuit is increased​
    7·1 answer
  • What is an example of a form of friction that impedes motion
    13·1 answer
  • A 15kg object strikes the ground with 2000J of kinetic energy after freely falling from rest. How far above the ground was the o
    8·1 answer
  • Hurry up.
    11·1 answer
  • UGH PLSSSS HELP WILL GIVE BRAINLIEST, AND 20 POINTS
    10·1 answer
  • Now that you know how forces affect the motions of objects, you can use the Tracker video analysis tool to create dynamic models
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!