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Mechanics
Mechanics is the branch of physics that deals with the interactions of objects and forces in the observable world. Questions asking about projectile motion, conservation of energy, and calculus based mechanics are perfect for this topic, but questions about repairs that a mechanic would do belong in our vehicles categories.
2,416 Questions
Is 45 kilometers per hour faster or slower than 26 miles per hour?
45 km per hour is slightly faster than 26 miles per hour (45km/h = 27.9617 mph).
What converts sound waves into mechanical movement?
through mediums
ANSWER: A speaker will covert sound waves into mechanical movement. To prove see sound feedback.
What is the difference between dynamic torque and static torque ratings?
One difference between dynamic torque and static torque is the level of difficulty to measure. Static torque is each to measure, while dynamic torque is not. This is because it requires a transfer of an electric or magnetic effect.
How do you calculate the volume of a paralelipiped if you only have height and density?
You cannot. You need to know the mass as well.
Yes, it can if you fit density of the material to the density of the surrounding media the force is zero.
ANS2:The only ways that the buoyant force could be zero is when the object is not in contact with a fluid* such as may be encountered in the vacuum of outer space or when there is no gravitational force pulling the fluid downward.Remember, that the object does not need to be floating for a buoyant force to be acting on it. A brick weighs slightly less because it displaces its volume of air and that air that was displaced is pushing up on the brick.
*"Fluid" includes gases and liquids.
Can you give some problem upon dimensional analysis?
Let us convert 10 miles per hour into meters per second. First we know that we have to transfer from the US Imperial measurement system to the Metric system. We can use the values of 1 mile = 1.609 Kilometers. 10 miles X (1.609 km/1 mile) = 16.09 km. Now we need to turn this into meters. 1 km = 1000 m. 16.09 km X (1000 m / 1 km) = 16090 m. We now have meters per hour. Now we need to get meters per second. 1 hour = 3600 seconds. 16090 m/hr X (1 hr/ 3600 sec) = 4.469 meters/second.
What is the difference homogeneous and heterogeneous mixture?
homogeneous have same substance in mixture.heterogeneous have two different substance.
the mass and the amount of force
What is the difference between heterogeneous mixture and homogeneous mixture?
In a homogeneous mixture the components are evenly distributed. The substances remain distinct from one another only in that their atoms, moleules, or ions remain seprated from one another.
In a heterogeneous mixture their are different phases where you will find one susbatnce is more abundant than the rest. An example of this would be mud, as the individual soil particles remain distinguishable fro the water.
Inertia torque an imaginary torque, which when applied upon a rigid body, brings it in an equilibrium position. Its magnitude is equal to accelerating couple, but opposite in direction.
T1 = -Iα
where
I = mass moment of inertia of body and
α = angular acceleration
Yes.
Law of inertia states that "In the absence of an external resultant force, a body at rest will remain at rest and a body in motion will remain in uniform motion in a straight line".
Mathematically:
if ΣF = 0
then a = 0
What conditions mus hold true if two gears are to mesh properly?
Tooth size, style and pitch must be the same. And if the gears are helical they must have the same twist, in opposite directions.
What happen if an object is acted upon by balanced forces?
In this case, it is as if no force acted on the object. The object won't acceleration; if it is resting, it will continue resting, and if it is moving, it will continue moving at the same velocity.
What does p equal in the equation p equals mv?
In classical mechanics, momentum (pl. momenta; SI unit kg·m/s, or, equivalently, N·s) is the product of the mass and velocity of an object (p = mv).
How much energy does it take to move one kilogram one meter?
It depends on the acceleration of the object.
What are the 4 effects of force?
there are not 4 but 3 effects of electric current - heating effect, magnetic effect and chemical effect of electric current
