Sobre un cuerpo de 700 g de masa que se apoya en una mesa horizontal se aplica una fuerza de 5N en la dirección del plano. Calcu
1 answer:
Answer:
(a) Ff = 3.95N
(b) Ff = 5N
Explanation:
(a) To find the friction force you use the second Newton law:
But you take into account the applied force and the opposite friction force:
you do Ff the subject of the formula and replace the values of the parameters:
(b) In the case of a motion with constant velocity you have that there is no acceleration. Hence:
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Answer:
The power drawn by the toaster is closest to:
(A) 370 W
Explanation:
First we calculate the resistance of the nichrome wire (R).
Where radious (r), resistance coefficient (p), and Length (L)
After replace the value in the ohm law power formula to obtain the power consumed:
From ideal gas law, PV=nRT
where P is the pressure, V is the volume of the container, n is number of moles, R is the gas constant and T is the temperature.
Hence,
T= 110.65 k
Kinetic Energy =
K.E=
The energy an object has as a result of motion is known as kinetic energy.
A force must be applied to an object in order to accelerate it. We must put in effort in order to apply a force. After the work is finished, energy is transferred to the item, which then moves at a new, constant speed. Kinetic energy is the type of energy that is transferred and is dependent on the mass and speed attained.
Kinetic energy can be converted into other types of energy and transported between objects. A flying squirrel may run into a chipmunk that is standing still, for instance. Some of the squirrel's initial kinetic energy may have been transferred to the chipmunk or changed into another kind of energy after the collision.
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