Answer:
The views of scientific knowledge can change over time. Changes can result from new science observations, but can also be affected by social, political or religious reasons.To develop a deeper understanding, we need to investigate the reason for that, that how it's happening why it's happening etc.
Answer:
Los datos que tienes son:
m = 13 kg
d = 46 m
∪ = 0,45
g = 9,8 m/s²
Fr = ?
w = ?
Lo primero que haremos que calcular Fr
Fr = ∪mg
Fr = (0,45) (13 kg) (9,8 m/s²)
Fr = 57,33 N
Calculamos el trabajo realizado.
w = Fd
w = (57,33 N) (46 m)
w = 2637,18 Joules
Respuesta.
El trabajo realizado es 2637,18 Joules
Explanation:
Answer:
1.) Wavelength
2.) Number of fringes
Explanation:
1.) If we split a laser beam by using a diffraction grating slide, then we can
verify the wavelength by applying the formula λ = ds/l.
2) If we split light into its individual wavelengths using a diffraction grating,
then we can determine the number of fringes by multiplying the spacing of the gradient lines (d) times the distance to the central maxima of the color band (s) divided by the length distance from the grating slide to the screen (l).
Answer:
a) 21.6 KN/m
b)v = 18.56 m/s
Explanation:
For this problem, the spring should be strong enough to get the car just over the top so:
mgh = (1/2)kx^2
(400)*(9.8)*(10) = (0.5)*(k)*(2.0^2)
k = 39200/2.645
k = 19600 N/m
a) K increased by Increase by 10%, so:
k = 19600 * 1.10 = 21560 N/m = 21.6KN/m---->specified spring constant
b) Now, Maximum speed of a 350 kg car will be at the bottom of the roller coaster:
therefore, (1/2)mv^2 + mg(Y_1-Y_2) = (1/2)kx^2
(0.5)*(350)*(v^2) + (350)(9.8)(10-15) =(0.5)*(21560)*(2.0^2)
v^2 = 344.4
v = 18.56 m/s