Answer:
Galileo is one of the most revolutionary scientists in terms of the novelty of his ideas.
He made great advances in the laws of motion and astronomical matters, as well as the creation of telescopes, making the first observations of the Moon, Venus and Jupiter satellites.
He supported Copernicus's idea that the earth revolves around the sun, which was a controversial idea for his time, and the reason why his books were banned because the idea that the earth was not the center of the universe was not yet a well received idea.
For his ideas he was persecuted by the Inquisition and accused of heresy, but he was a proud man and stayed true to his ideas .
Answer: the expression of the mechanical energy for under damped system is;
x(t)=Ae−γ/2tcos(ωdt+ϕ), where ωd=ω02−γ2/4
γ = damping rate, and
ω0 = the angular frequency of the oscillator without damping.
Explanation:
The physical situation in mechanical energy defined through out the world has three possible results depending on the value of a (which is a constant value), which depends on the value of what is under our radical. This expression can either be positive, negative, or equal to zero which will result in overdamping, underdamping, and critical damping, as the case may be.
γ2 >4ω²0 This is the Over Damped case. Here, the system returns to equilibrium by exponentially decaying towards zero, and the system will not pass that equilibrium position more than once.
γ² < 4ω²0 this is the Under Damped case. Here, the system moves back and forth as it slowly returns to equilibrium and the amplitude of the system decreases over time.
Finally, γ² = 4ω²0
This is the Critically Damped case. Here, the system returns to equilibrium very fast without moving back and forth and without passing the equilibrium position at all.
Answer:
answer is option C
Explanation:
i.e.
energy required to make the molecules collide so that reaction can occur.
Answer:
Speedometer, instrument that indicates the speed of a vehicle, usually combined with a device known as an odometer that records the distance traveled.
Explanation:
Answer:
• The amount of heat required to melt ice and raise the temperature of water T^oCToC is
Q=mL_f+mc\Delta TQ=mLf+mcΔT
Here m=1.5 kgm=1.5kg
L_f=3.33*10^5 J/kgLf=3.33∗105J/kg is Latent heat of fusion of ice.
c=4186 J/kg.^oCc=4186J/kg.oC is heat capacity of water.
\Delta T=50 ^oC-0^oC=50^oCΔT=50oC−0oC=50oC
So,
Q=(1.50)[3.33*10^5 +(4186)(50)]=8.13*10^5 JQ=(1.50)[3.33∗105+(4186)(50)]=8.13∗105J