Global warming is what will happen
Answer:
7.344 s
Explanation:
A = 0.15 x 0.3 m^2 = 0.045 m^2
N = 240
e = - 2.5 v
B1 = 0.1 T
B2 = 1.8 T
ΔB = B2 - B1 = 1.8 - 0.1 = 1.7 T
Δt = ?
e = - dФ/dt
e = - N x A x ΔB/Δt
- 2.5 = - 240 x 0.045 x 1.7 / Δt
2.5 = 18.36 / Δt
Δt = 7.344 s
answers:
m2 = 1.05 kg and m1 = 4.75 kg
Explanation:
the gravitational force is given by:
Fg = Gm1×m2/(r^2)
9.20×10^-9 = [(6.67×10^-11)×(m1×m2)]/[(19×10-2)^2]
(m1×m2) = 4.98 kg^2
m1 = 4.98/m2 kg
but we given that:
m1 + m2 = 5.80 kg
4.98/m2 + m2 = 5.80
4.98 + (m2)^2 = 5.80×m2
(m2)^2 - 5.80×m2 + 4.98 = 0
by solving the quadratic equation above:
m2 = 4.75 kg or m2 = 1.05 kg
due to that from the information, m2 has a lighter mass, then m2 = 1.05 kg.
then m1 = 5.80 - 1.05 = 4.75 kg.
Answer:
0.145 m
Explanation:
Data provided in the question:
wavelength of red light, λred = 656 nm = 656 × 10⁻⁹ m
wavelength of blue light, λblue = 486 nm = 486 × 10⁻⁹ m
line density = 500 per mm
length, L = 1.3 m
d = 1 mm / 500 lines
= 0.002 mm = 0.002 × 10⁻⁶ m
m = 1 [for the first order bright fringe]
Now,
The positions can be determined by using the formula
θ =
& y = Ltan(θ)
thus,
θred =
= 19.15°
yred = Ltan(θred)
= (1.5) × tan(19.15°)
= 0.521 m
similarly,
θblue =
= 14.1°
yblue = Ltan(θblue)
= 1.3 × tan(14.1°)
= 0.376 m
Hence,
distance between the first-order red and blue fringes
= 0.521 m - 0.376 m
= 0.145 m