The options are missing and they are;
Select one:
A. By seeing it flying above the water
B. By listening for it in the air
C. By listening for it underwater
D. None of the above: it won’t be able to detect it in time.
Answer:
OPTION C is the correct answer:By listening for it underwater
Explanation:
Due to the fact that the ships and other boats have underwater microphones because on most cargo ships the engine is to loud so they use microphones underwater to detect torpedos. Thus, the vessel can detect the torpedo by listening under water
Answer:
b
Explanation:
An insulator does not transfer thermal or electrical energy but a conductor does
Answer:
-13.09 N
Explanation:
Hello!
With Coulomb's law, the force of attraction between two charges can be calculated:
F=(K*q_1*q_2)/r^2
K=9*〖10〗^9 (N*m^2)/C^2
9,9 cm = 0,099 m
-2,3µC= -2,3*〖10〗^-6 C
6,2µC= 6,2*〖10〗^-6 C
By simplifying units the force remains in Newton.
Successes with your homework!
Answer:
The charge-to-mass ratio of the particle is 5.7 × 10⁵ C/kg
Explanation:
From the formulae
F = qvB and F = mv²/r
Where F is Force
q is charge
v is speed
B is magnetic field strength
m is mass
and r is radius
Then,
qvB = mv²/r
qB = mv/r
We can write that
q/m = v/rB ---- (1)
Also
From Electric force formula
F = Eq
Where E is the electric field
and magnetic force formula
F = Bqv
Since, electric force = magnetic force
Then, Eq = Bqv
E = Bv
∴ v = E/B
Substitute v = E/B into equation (1)
q/m = (E/B)/rB
∴ q/m = E/rB²
(NOTE: q/m is the charge to mass ratio)
From the question,
E = 3.10 ×10³ N/C
r = 4.20 cm = 0.0420 m
B = 0.360 T
Hence,
q/m = 3.10 ×10³ / 0.0420 × (0.360)²
q/m = 569517.9306 C/kg
q/m = 5.7 × 10⁵ C/kg
Hence, the charge-to-mass ratio of the particle is 5.7 × 10⁵ C/kg.
Answer:
Explanation:
G = Gravitational constant = 6.67 × 10⁻¹¹ m³/kgs²
= Mass of sphere = 2000 kg
= Mass of other sphere = 2.1 kg
r = Distance between spheres
Force of gravity is given by
The gravitational force is
The gravitational force is