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tekilochka [14]
2 years ago
12

Name four types of friction

Physics
1 answer:
Shtirlitz [24]2 years ago
6 0

Answer:

Static Friction-Friction that acts when the two objects are not moving

Sliding Friction-Two solid surfaces slide across each other

Rolling Friction-An object rolls across each other

Fluid Friction-Friction that occurs as an object moves through a fluid

Explanation:

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television set changes electrical energy to sound and light energy. In this process, some energy is *
ruslelena [56]

Answer :light

Explanation:  

A television set is another device that operates by the transformation of energy. An electrical beam from the back of the television tube strikes a thin layer of chemicals on the television screen, causing them to glow. In this case, electrical energy is converted into light.

6 0
2 years ago
3. Two Metra trains approach each other on separate but parallel tracks. Train A has a speed of 90 km/ hr, train B has a speed o
Elden [556K]

Answer:he trains take 57.4 s to pass each other.

Two trains A and B move towards each other. Let A move along the positive x axis and B along the negative x axis.

therefore,

The relative velocity of the train A with respect to B is given by,

If the train B is assumed to be at rest, the train A would appear to move towards it with a speed of 170 km/h.

The trains are a distance d = 2.71 km apart.

Since speed is the distance traveled per unit time, the time taken by the trains to cross each other is given by,

Substitute 2.71 km for d and 170 km/h for

Express the time in seconds.

Thus, the trains cross each other in 57.4 s.

Explanation:

8 0
2 years ago
A jet play sits on the runway and then rapidly accelerates does it go to potential to kinetic energy?
dmitriy555 [2]
Kinetic energy because it's moving
7 0
3 years ago
A person in a kayak starts paddling, and it accelerates from 0 to 0.65 m/s in a distance of 0.40 m. If the combined mass of the
SCORPION-xisa [38]

Answer:

Magnitude of the net force acting on the kayak = 39.61 N

Explanation:

Considering motion of kayak:-

Initial velocity, u =  0 m/s

Distance , s = 0.40 m

Final velocity, v = 0.65 m/s

We have equation of motion v² = u² + 2as

Substituting

   v² = u² + 2as

    0.65² = 0² + 2 x a x 0.4

    a = 0.53 m/s²

We have force, F  = ma

Mass, m = 75 kg

    F  = ma = 75 x 0.53 = 39.61 N

Magnitude of the net force acting on the kayak = 39.61 N

6 0
3 years ago
What is the difference between speed and velocity?
ElenaW [278]
B - speed and direction are combined in another quantity, called velocity. It can be thought of as its speed in a particular direction. Speed is the corresponding scalar quantity, because it does not have a direction.
5 0
2 years ago
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