Answer:
When a sound wave moves from water to air, the speed of the sound wave decreases.
Explanation:
This is because the transfer of motion that produces the wave.
Answer:
1.144 A
Explanation:
given that;
the length of the wire = 2.0 mm
the diameter of the wire = 1.0 mm
the variable resistivity R =
Voltage of the battery = 17.0 v
Now; the resistivity of the variable (dR) can be expressed as =
Taking the integral of both sides;we have:
R = 14.863 Ω
Since V = IR
I = 1.144 A
∴ the current if this wire if it is connected to the terminals of a 17.0V battery = 1.144 A
Answer:
The electric force on q₁ is .
Explanation:
Given that,
Charge on
Distance
Charge on at origin
Distance
Charge on
We need to calculate the electric force on q₁
Using formula of electric force
Put the value into the formula
Negative sign shows the attraction force.
We need to calculate the electric force F₁₃
Positive sign shows the repulsive force.
We need to calculate the net electric force
Hence, The electric force on q₁ is .
Answer:
F_B = 0.12N
Explanation:
In order to calculate the magnetic force on the charge, you use the following formula:
(1)
q: charge of the particle = 4μC = 4*10^-6 C
v: speed of the charge = 7.5*10^4 m/s
B: magnitude of the magnetic field = 0.4T
The direction of the motion of the charge is perpendicular to the direction of the magnetic field. Then, the magnitude of the magnetic force is:
The magnetic force on the charge is 0.12N
Answer:
Healing water to produce steam
Explanation: