The distance and the direction is 3 blocks East and then 3 blocks North.
<h3>What is distance to be travelled to go from point A to point B?</h3>
Distance is a measure of the space between two points.
Distance follows the path of travel of all object adding up all the spaces between the objects.
Displacement on the other hand is the distance travelled in a specific direction.
Displacement measures the shortest distance between two points in a specified direction.
The displacement of point from A to B is given as 3.606 blocks in a direction 33.69 ∘ north of east.
To determine the distance and direction of travel, the best possible route of travel is moving 3 blocks to the East and then 3 blocks to the North.
In conclusion, the distance travelled follows all the path of travel to get from one point to another.
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Answer: Friction
Explanation:
Friction is a force that opposes the motion of an object on another surface. For example, when a box is pushed along the floor, the floor exerts a frictional force on the box, "resisting" the motion of the box. This force is due to the contact between the molecules of the box and the molecules of the floor, and it is always directed against the direction of motion of the object (so, if the object is moving forward, friction acts backwards).
The magnitude of the friction force is given by:
where is the coefficient friction, which is a number that depends on the materials of the two surfaces, and N is the normal reaction.
Answer:
a) , b) , c)
Explanation:
a) Let assume that electric motor is single-phase and operates in DC-mode, so that mechanical power output is:
The current delivered to the motor is:
b) The power delivered to the motor is:
The energy delivered to the motor during 3.80 hours of operation is:
c) The cost to run the motor is:
Answer:
Part a)
Part b)
Part c)
distance L is independent of the mass of the sphere
Explanation:
Part a)
As we know that rotational kinetic energy of the sphere is given as
so we will have
so we will have
Part b)
By mechanical energy conservation law we know that
Work done against gravity = initial kinetic energy of the sphere
So we will have
Part c)
by equation of energy conservation we know that
so here we can see that distance L is independent of the mass of the sphere
the wave has a speed of 12 m/s.
Explanation:
Speed is directly proportional to wavelength and frequency. The wave has a frequency of 4 Hz. One Hertz (Hz) is equal to one cycle per second. The image shows that the wave has a wavelength of 3 m. Using the given speed and frequency, the wavelength can be calculated as shown below.
speed= wave length x frequency
speed = 3m x 4Hz
speed = 12m m/6