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What is the equation of newton's second law of motion describes the relationship of forces mass and acceleration?
Newton wrote that force is equal to the rate of change of momentum. This isF = dp/dt (1). As momentum, p, is the product of mass, m, and velocity, v,(1) is equivalent to F = dmv/dt (2). Velocity is the rate of change of position,and becomes acceleration under differentiation with respect to time. Applyingthe product rule to (2) gives F = vdm/dt + mdv/dt. Unless a body's mass ischanging (e.g. ejecting fuel to take off, or moving at relativistic speeds),dm/dt = 0. So (2) becomes F= mdv/dt. But dv/dt is the acceleration, a.So we can see that F = ma.
What is a water bottle rocket's reaction to newton's laws?
Pressure is the force that launches the bottle rocket once it has launched this pressure starts to dissipate until no other force is driving the rocket to overcome gravity, therefore gravity is now the only force acting on the object and as such the bottle falls back to earth
How do the maximum and minimum voltages depend on the speed of the magnet?
The induced emf ie voltage in a conductor or coil is directly proportional to the rate at which the magnetic flux linked with it changes. So when the speed is less then dB/dt will be less and so induced voltage becomes less. If the speed is high then dB/dt will be very much high and so large emf will be induced.
One kilocalorie of heat energy will raise temp of water how many degrees celsius?
Change in temperature, dT,=1/m, where m is the amount of water, in kilograms. Depends on how much kilograms of water you have. The equation to use is Q=cm(dT), where c is the specific heat capacity of water (conventional use puts it 4186 J/(kg*C degrees)), m is the mass, in kilograms, of the water you're heating, dT is the amount of degrees, in Celsius (or Kelvin), that you want to heat the water by, and Q is the amount of energy needed, in Joules. 1 kilocalorie equals 4186J, solving for change in temperature (dT), dT=Q/(cm). Substituting in Q and c gives you dT=1/m. If you do not know the mass, but only volume, m=pV, where p is the density of water (convetionally 1 *10^3 kg/m^3) and V is the volume of the amount of water you have in m^3.
In this equation what does Q repressent?
Depends on the equation. If it is similar to: Q = m*Cp*dT then Q = energy if it is similar to A= Ao * exp (-Q/RT) then Q is the activation energy
Why is it important to wear safety googles in the dt workshop?
It is important to wear safety goggles in any situation where flying objects or splashing corrosive or toxic liquids could strike and damage your eye. The reason for this is that the loss or significant impairment of vision in one or both eyes usually results in a catastrophic change in your quality of life, not to mention the pain and expense involved in the short term. There are a variety of "safety goggles" designed to offer some degree of protection against different types of hazards to the eye.
Safety rules for DT rooms?
never do something without a teacher
What work does a DT engineer do?
DT can mean several things:Damage and Tolerance- in which case a DT engineer would measure wear and tear on products and suggests remediesDrive Testing- in which case a DT engineer would drive a vehicle (or any product) to test it.Or any one of about 100 other things...
What jacket does Chief Keef wear in Everyday Music Video?
Northface hyvent dt i believe
How rockets engines work and relate on the third law of motion?
Rockets work on the conservation of vector energy, cP. 0 = dcP/dr = cdP/cdt=dP/dt = d(mV)/dt = mdV/dt + Vdm/dt=0 Thus, mdV/dt = -Vdm/dt, or (dV/dt)/V = -(dm/dt)/m. The Rocket's mass accelerates at the rate of the mass changes dm/dt.
What is derivative of cot t dt?
d/dt cot (t) dt = - cosec2(t)
How does Huygens find the acceleration in uniform circular motion?
a = dv/dt =d(vet)/dt =dv/dt *et+det/dt *vwith det =...
How do you use differentials to estimate the propagated error in computing the volume of a cube?
The formula for the volume of a cube is V=s^3. Take the first derivative----> d/dt(V)= d/dt(s^3) ---->dv/dt= 3s^2 (ds/dt) dv/dt is the propagated error for volume, so the other variables should already be defined in the question where: s= side length and ds/dt would equal possible error in each side. Sometimes it's necessary to solve for these variables using other formulas the most common of which is surface area which is: SA=6s^2 where SA`= dsa/dt= 12s (ds/dt).
How do you build definition lists?
<dl> definition list <dt></dt> definition tag <dd></dd> data definition <dt></dt> <dd></dd> </dl>
Can you have a zero velocity and zero displacement?
Yes, dD/dt = d0/dt = 0 thusDisplacement D=0 and Velocity dD/dt=d0/dt = o.
If y equals x cube plus 2x and dx over dt equals 5 what is dy over dt when x equals 2?
y=x3+ 2x, dx/dt=5, x=2, dy/dt=? Differentiate the equation with respect to t. dy/dt=3x2*dx/dt Substitute in known values. dy/dt=3(2)2 * (5) dy/dt=60
When was KCGE-DT created?
KCGE-DT was created in 2003.
