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
Leni [432]
2 years ago
7

To reach a distance of 2 km, a car has to cover a path of 2.4 km in 10 minutes. Calculate its average speed and velocity

Physics
1 answer:
nexus9112 [7]2 years ago
5 0

Answer:

Average speed = <u>0.24 km/min.</u>

Average velocity = <u>0.2 km/min.</u>

Explanation:

<u>Finding average velocity</u> :

  • Least possible distance / Time taken
  • 2 km / 10 min
  • 0.2 km/min.

<u></u>

<u>Finding average speed</u> :

  • Path distance / Time taken
  • 2.4 km / 10 min
  • 0.24 km/min.
You might be interested in
Why do these two magnets attract each other?
Liono4ka [1.6K]

Answer:

A

Explanation:

When two magnets are brought near each other, like poles repel; opposite poles attract. We like to represent this force effect of a magnet on iron-like objects with a concept called magnetic field. The concept of field can be best understood if we remember the gravitational force of Earth on object near it.

5 0
3 years ago
Read 2 more answers
Tell me the hearing range of all animals please. 55 POINTS AVAILABLE!!!!! This means a lot thanks.
WINSTONCH [101]

Answer:

Hearing range describes the range of frequencies that can be heard by humans or other animals, though it can also refer to the range of levels. The human range is commonly given as 20 to 20,000 Hz, although there is considerable variation between individuals, especially at high frequencies, and a gradual loss of sensitivity to higher frequencies with age is considered normal. Sensitivity also varies with frequency, as shown by equal-loudness contours. Routine investigation for hearing loss usually involves an audiogram which shows threshold levels relative to a normal.

Several animal species are able to hear frequencies well beyond the human hearing range. Some dolphins and bats, for example, can hear frequencies up to 100,000 Hz. Elephants can hear sounds at 14–16 Hz, while some whales can hear infrasonic sounds as low as 7 Hz (in water).

Explanation:

HOPE THIS HELPS!!!

6 0
2 years ago
Read 2 more answers
If a person cannot hear, there could be a problem with any of the following except: Select one: a. waves of sound entering the o
Black_prince [1.1K]

Answer:The bones of teh linnear eat moving the eardrum

Explanation:

4 0
3 years ago
Which waves have oscillations parallel to their direction of motion?
AfilCa [17]

Answer:

sound waves

Explanation:

this is because sound waves are longitudinal waves, and longitudinal waves are waves that travel parallel to the direction of the wave motion

thus it cannot be light or electromagnetic waves but only sound waves

hope this helps, please mark it

6 0
2 years ago
A person exerts a 19-N force on a cart attached to a spring and holds the cart steady. The cart is displaced 0.060 m from its eq
Mariana [72]

To solve this problem, apply the concepts related to Hooke's law. From there we will find the spring constant. Subsequently, applying Energy balance, which includes gravitational potential energy, elastic potential energy and kinetic energy, we will bury the system's energy. Finally, using the displacement expression for the simple harmonic movement, we will find the expression that describes the system.

PART A) The expression for the spring force is

F=kx

Here,

k = Spring constant

x = Displacement

Rearranging to find the spring constant we have that

k = \frac{F}{x}

k = \frac{19}{0.06}

k = 316.66N/m \approx 320N/m

PART B ) The gravitational potential energy acts on the spring holds the cart is zero. Since cart is placed in the equilibrium position. The kinetic energy of the cart is zero.  Therefore the expression for the total energy is,

E = (PE)_g+(PE)_{spring}+KE

E = 0+\frac{1}{2} kx^2+0

E = \frac{1}{2} (316.66N/m)(0.06)^2

E = 0.569J \approx 0.57J

PART C) The expression for the angular frequency is

\omega = 2\pi f

\omega = 2\pi (1Hz)

\omega = 2\pi rad/s

The equation for the motion of the cart is

x(t)= Acos(\omega t)

Replacing,

x(t) = 0.06 cos (2\pi t)

5 0
2 years ago
Other questions:
  • What is the Kinetic Energy of a 1200 kg object that is moving with a speed of 24 m/s
    13·1 answer
  • Which of the following are relatively unchanged fragments from the early period of planet building in the solar system? a. aster
    9·1 answer
  • An object is moring in a negative direction with a negative acceleration, for example an object dropped out a vindow. What does
    8·1 answer
  • Two basketballs of equal mass are rolling toward each other at constant velocities. The first basketball (B1) has a velocity of
    6·1 answer
  • A student throws a rock horizontally off a 5.0 m tall building. The rock's initial speed is 6.0 m/s. How long will it take the r
    8·2 answers
  • Red light has a wavelength of 500 nm. What is the frequency of red light?
    14·1 answer
  • A Bear moves at a speed of 8 m/s for a distance of 300 m. How long does it take the Bear to travel this distance?
    8·1 answer
  • what is the acceleration of each body of mass 5kg rests on a frictionless table and is connected to a cable that passes over a p
    14·1 answer
  • Please answer D in the image with an explanation
    15·1 answer
  • Which chemical equation is balanced?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!