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
Anvisha [2.4K]
3 years ago
5

What is a speed of a car if it covers 130 km in 2 hours?

Physics
2 answers:
Flauer [41]3 years ago
8 0

Answer:

65km/h

Explanation:

s=d/t

s=130km/2h

 = 65km/h

inysia [295]3 years ago
3 0

Answer:

65 km per hour

Explanation:

130/2=65

You might be interested in
A sphere has an unknown amount of charge distributed uniformly at a distance of 0.56cm from the center of the of the sphere, the
Mars2501 [29]
2+2+2+2+22++2+2+2+2+222+2++2c2+2+2+2+2+2
7 0
3 years ago
What is elasticity in polymer generally related to?
Andrej [43]
The elasticity of a polymer is primarily due to the structure of the molecule and the cross-linking between strands. Hydrogen bonding is a contributor to the shape of the molecule, but not a major player in terms of elasticity. We would have to answer "false".
<span>
</span>
6 0
3 years ago
Read 2 more answers
PLEASEEE HELPPPPPPP:
tatuchka [14]
V(voltage) = I(current)R(resistance)
substitute in the values

V = 15 * 0.10
V = 1.5 volts
7 0
3 years ago
Read 2 more answers
A thin rod of length 1.4 m and mass 140 g is suspended freely from one end. It is pulled to one side and then allowed to swing l
m_a_m_a [10]

Answer:

a The kinetic energy is  KE = 0.0543 J

b The height of the center of mass above that position is  h = 1.372 \ m    

Explanation:

From the question we are told that

  The length of the rod is  L = 1.4m

   The mass of the rod m = 140 = \frac{140}{1000} = 0.140 \ kg  

   The angular speed at the lowest point is w = 1.09 \ rad/s

Generally moment of inertia of the rod about an axis that passes through its one end is

                   I = \frac{mL^2}{3}  

Substituting values

               I = \frac{(0.140) (1.4)^2}{3}

               I = 0.0915 \ kg \cdot m^2

Generally the  kinetic energy rod is mathematically represented as

             KE = \frac{1}{2} Iw^2

                    KE = \frac{1}{2} (0.0915) (1.09)^2

                           KE = 0.0543 J

From the law of conservation of energy

The kinetic energy of the rod during motion =  The potential energy of the rod at the highest point

   Therefore

                   KE = PE = mgh

                        0.0543 = mgh

                             h = \frac{0.0543}{9.8 * 0.140}

                                h = 1.372 \ m    

                 

5 0
2 years ago
Read 2 more answers
What is the current when the resistance is 5 ohms and the voltage is 10 volts?
Travka [436]
Ohm's Law states V = IR
So,
I = V/R
The answer is B. 10/5=2 amps
5 0
3 years ago
Read 2 more answers
Other questions:
  • What is the difference between a universal law and a scientific theory?
    10·1 answer
  • A golf ball has a mass of 46 grams, and when struck by a driver reaches a speed of 42 m/s in a time of 0.00050 seconds. what was
    9·1 answer
  • I have a big test coming up and these two questions i don't understand: Choose the best answer: A device that transforms mechani
    7·1 answer
  • The rate of rotation of the disk is gradually increased. The coefficient of static friction between the coin and the disk is 0.5
    8·1 answer
  • I need help solving the equation 2Na(s)+Cl2(g)&gt;2NaCl(s)
    5·1 answer
  • Match the element with its description.
    5·2 answers
  • What is the average temperature of the city, 89.6 Fahrenheit, on the Celsius scale?
    7·1 answer
  • The kinetic energies of particles in a sample of matter are increasing. This sample is most likely
    6·2 answers
  • Give the missing ammeter reading a and b. suggest why more current flow through some bulbs than through others Grade 10 question
    9·1 answer
  • PLEASE SEE MY QUESTIONS UNDER MY PROFILE AND ANSWER THEM, I REALLY NEED HELP THANK YOU!
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!