Mechanics

Thermal diffusivity signifies the rate of heat transfer into the solid. If it is higher then less time is required for the heat to penetrate into the solid. it is th property of a solid. If we know the mass density,specific heat and thermal conductivity coefficient then we can determine its thermal diffusivity.

Velocity (relative and absolute), medium of transmission, ...

Formula of work is always { Work= Force x Distance}

so you find the force applied and the distance moved then multiply

it is a skin of friction. TROLOLOLOLO

Its evolved as a useful and time saving tool, and represents the mass if it were concentrated at a single point and especially useful when calculating motions of masses involved with the equations of motion.

(ignoring air resistance.)

s = 0.7 metres

take g = 9.82 (m / s) / s

time to fall 0.7 metres, regardless of horizontal velocity,

t = (sq. root (s / (0.5 * g))) = 0.3776 seconds

so constant horizontal velocity required to travel 0.7 metres in 0.3776 seconds

= 0.7 / 0.3776 = 1.854 metres / second

2.6263125e-10

(.00000000026263215)

F=G*m1*m2/d2

So the force is Newton's constant of gravity (G) of 6.674 28 x 10-11 m3 kg-1 s -2 times mass one (m1) and mass two (m2) divided by the distance (d) squared.

Reason being vaguely adiabatic process is more rapid - process is done so fast that no energy is allowed to enter or exit the system. So P-v variations will be high

* a series of things depending on each other as if linked together; "the chain of command"; "a complicated concatenation of circumstances" * (chemistry) a series of linked atoms (generally in an organic molecule) * a series of (usually metal) rings or links fitted into one another to make a flexible ligament * (business) a number of similar establishments (stores or restaurants or banks or hotels or theaters) under one ownership * anything that acts as a restraint * a unit of length * range: a series of hills or mountains

Average acceleration =

(change in speed over some period of time) divided by (time for the change)

This is possible because gases have the physical property of elasticity, due to the fact that there are relatively large spaces between the molecules of gases.

Take the velocity to be in positive direction.

Positive acceleration increases velocity and they are in the same direction.

Negative acceleration reduce velocity and they are in opposite direction.

It does not matter if the motion in linear or anfular.

Mechanical potential energy, U, equals mgh where m is mass, g is the gravitational constant, and h is the change in height from the reference point.

Applying U=mgh this situation, you get:

U=(50 kg)(9.8 m/s2)(3 m) = 1470 Joules (J)

A torque sensor, or torque meter, is a device that measures the torque on rotating systems, usually wheels. Torque, in this case, is the twisting force that causes rotation, such as that applied when you pedal a bicycle.

the surface tention of aliquid is the force per unit length on the surface that opposes the expansion of the surface area

No. An inclined plane is simply a two-dimensional surface with a slope to it in the third dimension. A lever is a three-dimensional object which also requires a fulcrum (or leverage point) to act as a force transmitter, amplifier or attenuator.

I need to find out the question "How does safety-technology change momentum?" ASAP (As soon as possible)

Momentum (p) [kg*m/s] is equal to mass (m) [kg] multiplied by velocity (v) [m/s]

p=mv

100 [kgm/s] = 25 [kg] v

divide both sides by 25 [kg]

v=4 m/s

Decrease friction .

the radius of the big driven wheel divided by the length of crank that the pedal is attached to.

I think you are asking whether friction is proportionalto weight in which case the answer is yes In other words if you double the weight you double the friction or halve the weight to halve the friction.

dodges are cool

Yes. For instance, say a box is sliding at me at some speed. I push back with a force of 25N directly against the path of the box. Suppose that I stop the box after it goes 25m. So, I pushed against the box, or in the negative direction. The displacement was in the positive direction. So, if W=Fs and -25N=F and s=25m, W=Fs=-25N*25m=-625J.