Answer:2538.43 N
Explanation:
Given
Mass of Log=205 kg
Ramp angle
Coefficient of Friction=0.855
log acceleration
Let T be the Tension
Here
T=849.04+132.63+1556.76=2538.435 N
The force of gravity most likely
Answer:
Explanation:
Given that,
Ey = 375•Cos[kx - (2.20 × 10¹⁴t)]
Speed of light
c = 3×10^8m/s
What is the wavelength?
Generally,
The wavelength of electromagnetic wave is give as
Ey = Emax•Cos(kx—wt)
k = 2π/λ
w = 2πf
Ey = Emax•Cos(2πx/λ—2πft)
Comparing this to the wave equation given,
We notice that,
2πx/λ = kx
Also,
2.20 × 10¹⁴t = 2πft
t cancels out
2.20 × 10¹⁴ = 2πf
f = 2.20 × 10¹⁴ / 2π
f = 3.5 × 10¹³ Hz
Since we are given that
c = 3×10^8m/s
Then, using relationship between c, v and λ.
c = fλ.
λ. = c/f
λ. = 3×10^8 / 3.5 ×10¹³
λ. = 8.57 × 10^-6m
λ. = 8.57 μm
The wavelength of the electromagnetic wave is 8.57 micro meter (8.57 μm)
Answer:
No we cannot perform any experiment that tells us weather we are moving or not at a constant speed.
Explanation:
Motion of any body is relative to other reference bodies. We can perceive motion only if our position with respect to a fixed object changes. This is the fundamental concept of reference frame in classical physics or Newtonian Physics that motion is always from a reference.
We choose a fixed body as reference and ,measure the distance we cover from this fixed point and also our speed with respect to this fixed point. The choice of frame of reference is completely dependent on the observer.
Since in the given case a reference cannot be established outside the plane thus we cannot detect our motion.