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The current drawn from the cell when the wire is connected across A as shown is 0.3A but reduced to 0.25A, when the wire is removed leaving
A. Alone connected to the the cell determine
B. The E.M.F of the cell
C. The internal resistance of the cell
Three resistors with values of 60.0Ω, 30.0 Ω, and 20.0 Ω, respectively, are
connected in series to a 110.0 V battery of negligible internal resistance. (a) Draw a circuit diagram and find the (b) equivalent resistance of the combined resistors, (c) current flowing through each resistor, (d) voltage drop across each resistor.
Four resistors when connected in series give an equivalent
resistance if 75.0 Ω. Three of the resistors have values 18.0 Ω, 6.0 Ω, and
24.0 Ω, respectively. What is the resistance of the fourth resistor?
What resistance must be connected in parallel to 60 Ω resistor to
reduce the combined resistance of 15 Ω?
Four resistors when connected in series give an equivalent
resistance if 75.0 Ω. Three of the resistors have values 18.0 Ω, 6.0 Ω, and
24.0 Ω, respectively. What is the resistance of the fourth resistor?
A sinusoidal wave traveling in the positive x direction has an amplitude of 15.0 cm, a wavelength of 40.0 cm, and a frequency of 8.00 Hz. The vertical position of an element of the medium at t = 0 and x = 0 is also 15.0 cm, Determine the phase constant , and write a general expression for the wave function
A 15-kg rock is dropped from rest on the earth and reaches the ground in 1.75s. When it is dropped from the same height on Saturn’s moon Enceladus, it reaches the ground in 18.6s. What is the acceleration due to gravity on Enceladus?
The capacitors have values C₁ = 2.5 uF and C₂ = 4.0 µF, C3 = 6.0 μF C₁ = 8.0 μF and the potential difference across the battery is 12.0 V. Assume that the capacitors are connected in series. Find the equivalent capacitance of the circuit and solve for the potential difference across each capacitors.
A uniform bar of weight 250 newtons has a length of 6 meters. It is supported at the two ends. Where must a load of 300 newtons be placed so that the supporting force at the left end is twice that at the other end? What is the magnitude of each of the supporting forces?
1. Compare the noise created by the object dropped from 20 cm above and the created after the pie tin repositioned.
2. Compare the noise created by the object dropped from 20 cm above the pie tin and the object dropped from 100 cm above the pie tin.
3. What is the GPE difference (∆U) of the object drop at two different distances from the pie tin?
4. What does the sound created by the object in situation number one indicate?
