This can be solve using the formula P = I^2 * Rwhere P is the powerI is the CurrentR is the resistanceP = I^2 * R
1/4 Watt = I^2 * 100 ohm solve for II^2 = 1/400 I = 0.05 amps then using the formula to solve for the voltage:V = I * RV = 0.05 amps * 100 ohms V = 5 volts
Yes i think so im pretty sure
Answer:
20 m/s
Explanation:
The force experienced by a charged particle in an electric field is given by
where, in this problem:
is the charge of the particle
E is the electric field
The electric field here has components:
So the components of the force experienced by the particle are:
Now we can find the components of the acceleration experienced by the particle, using Newton's second law of motion:
where
m = 4.0 g = 0.004 kg is the mass of the particle
The 3 components of the acceleration are:
Now we can find the components of the velocity of the particle at time t using the suvat equation:
where:
are the initial components of the velocity
Therefore, at t = 2.0 s, we have:
And so, the speed of the particle is the magnitude of the final velocity:
Answer:
7500 m/s
Explanation:
We can use the equation velocity of a wave equals wavelength times frequency. Therefore, v = wavelength*f = (25 m)(300 Hz) = m/s7,500