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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
a streched string is a wave in itself though stationary when it is plucked the strongest force creates the most audible wave form which is then modified by concomintant wave(e.g.,guitar);I like the eirst two relevant answers better:they're probably right
Why is sound pressure level commonly referred to as volume?
It is referred to as volume because the button that we use to control it, is commonly labeled, volume.
Related Information:
A sound source radiates power P and this results in a sound pressure p. Sound power is the cause - Sound pressure is the effect.
See related link.
What are three ways an object can accelerate?
The 1 way you can tell an object is in motion is by having a focus point that does not move and watch and see if the object you are looking for is moving. Another way to notice where the object is now, then later, check and see if the object has been moving. lastly, if you are a scientist, you can use telescopes, computers, and the latest gadgets to tell you if an object is in motion.
What combination of structures is an umbrella made of?
An umbrella is made out of a solid support and frame structure. The handle and center rod are solid because they are each one part throughout and no spaces in between. The top is a frame and fabric structure because it is made out of a combination of elements (ribs and fabric) that provide mutual support to remain stable. So an umbrella is made of a combination of structures: frame, fabric, and solid.
What is the force on the ground of a 12kg acorn falling from a tree?
The impact force depends upon the height from which it has fallen (IE- its velocity upon impact), and the duration of impact (determined by the elasticity of the collision).
However, the object exerts no force upon the ground *while* falling.
the bell crank lever is a apparatus used to verify the law of moments.
How do you chat in project torque?
Press ENTER. Type in what you want to say. Press ENTER again.
PS-If you don't see a text box, press Y
Press Y more times to either-
Make it smaller
Make it bigger
or
Make it disappear
What happen to the braking distance if the speed is doubled and why?
Hi there! Assuming that the deceleration (or negative acceleration, if you will) is constant and the same in both cases, you can use a special kinematic formula to solve the problem. The formula follows:
(final velocity)^2 = (initial velocity)^2 + [ 2 * (deceleration) * (braking distance) ]
Rearranged to our needs the formula reads:
braking distance = [1/2] * -(initial velocity)^2 / (deceleration)
* this equation assumes that the final velocity is zero
If the initial speed were doubled then the general formula would read:
braking distance = 2 * -(initial velocity)^2 / (deceleration)
NOTICE that the two equations are the exact same except for the leading coefficients. 1/2 is assocaited with the braking distance of the normal velocity while 2 is assocated with the breaking distance of the doubled velocity. Since 2 is four times larger than 1/2, this leads us to the conclusion that the breaking distance for an object traveling at double a certain velocity would be 4x greater than the breaking distance of the object moving at the "regular" velocity.
What is the acceleration for linear motion?
Average Acceleration can be verbally defined as the change in velocity in a certain change in time...
More simply put:
Average Acceleration = (Final Velocity - Initial Velocity) / (Final Time - Initial Time)
What is the distance from crest to midpoint of a transverse wave?
If I understand the question correctly, that's one-quarter of a full cycle, so it is 1/4 of the wavelength. The wavelength varies from wave to wave - and this has nothing to do whether the wave is transverse or longitudinal.
How do you torque the camshaft?
If you do not have a manual for this vehicle, DO NOT PROCEDE! You have invaded the heart of the engine, and if you do not have a manual, you run the risk of doing damage to the engine if you put it back together wrong. YOU MUST GET THE CAMSHAFT ALIGNED WITH THE CRANKSHAFT IF THE ENGINE IS TO RUN CORRECTLY! Anytime you are reassembling a large component, with multiple screws or bolts, finger tighten all fastners until all fastners have been run down finger tight. Then, working across the component, tighten one fastner snug, then go to the diagonal fastner, and tighten it snug. FOLLOW TORQUE SPECIFICATIONS! If you are working without a torgue wrench, try to tighten all fastners as uniformly as possible. Torgue specifications are critical on many automotive parts, and it is worth buying or renting a torque wrench to get them right. Work all fastners down in steps, avoid tightening one faster all the way while others are loose or only finger tight. This can cause warpage of parts, and may prevent all fastners from being tightened properly.
What is the importance of the dynamic torque?
The torque produced by the cars engine will be both static and dynamic, depending on where it is measured.
If the torque is measured in the crankshaft, there will be large dynamic torque fluctuations as each cylinder fires and its piston rotates the crankshaft.
If the torque is measured in the drive shaft it will be nearly static because the rotational inertia of the flywheel and transmission will dampen the dynamic torque produced by the engine.
So the torque which fluctuates based upon the operating condition & other amplification factors, is called dynamic torque.
Saurabh Solanki
When the net force is not zero what will an object do?
Accelerate.
Using Newton's second law, Net Force = mass * acceleration
rearranged the equation acceleration = Net Force/mass
so when the force is non zero
and the mass is non zero, the object will accelerate.
Note: This does not mean that the object is always at rest when the force is zero, it simply means the velocity is constant (when velocity =0, the object is at rest).
When a body has velocity no constant has acceleration or no?
Yes. If a body has a constant velocity there is no acceleration, but if the velocity is changing there is acceleration present.
the pressure exerted on the wall of the ventricle before being filled up.
What is the polygon law of forces?
" If a number of forces acting at a point be represented in magnitude ad direction by the sides of a polygon in order, then the resultant of all these forces may be represented in magnitude and direction by the closing side of the polygon taken in opposite order "
What is a modified version of a inclined plane?
It is a screw. A screw is an inclined plane wrapped around a rod
What height from the centre of earth the value of g is half of its value on the surface of earth?
gravity follows an inverse squared law. at twice the distance it would be a quarter of G.
1/g2 = 1/2. so the distance would be the square root of 2 (or 1.4). 1.4 x earths radius of 6366 km would be 9003 km
How can twice the work be done by a force of half the magnitude?
Work = (Force) x (Distance)
Since the calculation of work involves distance to the same extent as force, any force, no matter how small, can do any amount of work, no matter how large, by proper manipulation of the distance.
Work = F x D
or D = W / F
You want ---> 2W = (F/2) x Q
Q = (2W) / (F/2) = 4W / F = 4D
By pushing 4 times as far, half the force does twice the work.
