Answer:
I didn't know these questions sorry
Answer:
ultraviolet light shining on the minerals will cause them to give off visible light.
Explanation:
Here we know that in all electromagnetic waves have certain range of energy
Here in the above case when a given frequency range of electromagnetic wave incident on the fluorescent mineral then that mineral will absorb few amount of energy and the remaining energy will throw back into the surrounding again.
So here the main concept is that when a electromagnetic wave which is higher in energy then visible light incident on fluorescent material then it will absorb some amount of energy and the remaining energy is released in form of light
So here energy more than visible light is for ultraviolet light only
so here the correct answer would be
ultraviolet light shining on the minerals will cause them to give off visible light.
Answer:
E > A = B > C > D
Explanation:
On a semicircular curve, the magnitude of force is given by the formula as :

Here, m is the mass of the vehicle
Case A : R = 60 m v = 16 m/s

Case B : R = 15 m v = 8 m/s

Case C : R = 30 m v = 4 m/s

Case D : R = 45 m v = 4 m/s

Case E : R = 30 m v = 16 m/s

The order of the magnitude of the force of the roller-coaster track on the cart from largest to smallest is :
E > A = B > C > D
Acceleration is the
rate of change of velocity, a body moving with uniform velocity does not
possess acceleration at all i.e. acceleration is zero
Answer:
0.15A
Explanation:
The parameters given are;
R=20.0 Ω
C= 2.50 μF
V= 3.00 V
f= 2.48×10^-3 Hz
Xc= 1/2πFc
Xc= 1/2×3.142 × 2.48×10^-3 × 2.5 ×10^-6
Xc= 25666824.1
Z= 1/√(1/R)^2 +(1/Xc)^2
Z= 1/√[(1/20)^2 +(1/25666824.1)^2]
Z= 1/√(2.5×10^-3) + (1.5×10^-15)
Z= 20 Ω
But
V=IZ
Where;
V= voltage
I= current
Z= impedance
I= V/Z
I= 3.00/20
I= 0.15A