Answer:
B. Nothing...
Explanation:
That's the only good option
Answer:
0.00318 ft/s
Explanation:
Volume of the inflatables swimming pool, V = πr²h
V = πr²h
a) (dh/dt) = (dh/dV) × (dV/dt)
V = πr²h
(dV/dh) = πr²
(dh/dV) = (1/πr²)
So, we require the rate of change of depth when diameter = 8 ft, radius = (diameter)/2 = 4 ft
(dh/dt) = (dh/dV) × (dV/dt)
(dh/dV) = (1/πr²) = (1/π(4²)) = 0.0199 ft⁻²
(dV/dt) = 0.12 gal/s = 0.016 ft³/s
(dh/dt) = (0.0199 × 0.016) = 0.00318 ft/s
Pirelli produce five specifications of dry-weather tyre, each with a distinguishing sidewall colour – ultrasoft (purple), supersoft (red), soft (yellow), medium (white), hard (orange).
At each race the teams have access to three specifications (or compounds) of these dry-weather tyres.
Each car’s full race weekend allocation consists of 13 sets of dry-weather tyres, four sets of intermediate tyres and three sets of wet tyres.
Answer:
23.1 N/C
Explanation:
OP = 3 m , OQ = 4 m
q = - 8 nC, Q = 75 nC
Electric field at P due to the charge Q is
Electric field at P due to the charge q is
According to the diagram, tanθ = 3/4
Resolve the components of E1 along x axis and along y axis.
So, Electric field along X axis, Ex = - E1 Cos θ
Ex = - 27 x 4 / 5 = - 21.6 N/C
Electric field along y axis, Ey = E1 Sinθ - E2
Ey = 27 x 3 /5 - 8 = 8.2 N/C
The resultant electric field at P is given by
Answer:
A. "The electric force vector is along the direction of the electric field, whereas the magnetic force vector is perpendicular to the magnetic field."
D. "The kinetic energy of a charged particle moving in an electric field is not altered, whereas the kinetic energy of a charged particle moving in a magnetic field is either increased or decreased, depending on the direction of motion."
Explanation:
Electric fields originate from voltage differences, the higher the voltage, the stronger the resulting field. Magnetic fields originate from electric currents, a stronger current results in a stronger field. An electric field exists even if there is no current. When there is current, the magnitude of the magnetic field will change with power consumption, but the strength of the electric field will remain the same.
