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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?
Two point charges are placed as follows: charge q1 = -1.50 nC is at y = +6.00 m and charge
q2 = +3.20 nC is at the origin. What is the total force (magnitude and direction) exerted by
these two charges on a negative point charge q3 = -5.00 nC located at (2.00 m, -4.00 m)?
A capacitor consists of two square metal plates, each measuring 5.00 𝑥 10^−2m on a
side. In between the plates is a sheet of mica measuring 1. 00 𝑥 10^−4m thick.
(a) What is the capacitance of this capacitor? If the charge in one plate is
2. 00 𝑥 10^−8C.
(b) What is the potential difference and
(c) What is the electric field between the plates?
Given: Permittivity of Mica
(𝜖 = 4.8 𝑥 10^−11𝐶^2 / 𝑁. 𝑚^2)
A point charge of -6. 00𝑥10^−9C is 3.00m from point A and 5.00m from point B.
(a) Find the potential at point A and point B.
(b) How much work is done by the electric field in moving a 2.00 nC particle
from point A to point B?
A model car is moving around a circular track of radius 3.0 m at a speed of 1.5 m s−1 as shown in the figure. It takes the car 12.6 s to complete one full lap.
What is the magnitude of the average velocity of the car (a) between point A and point B? (in m s−1 to 2 s.f)
NOTE: The motion of the car is NOT an example of constant acceleration.
A point particle is projected from the top of a hill 5m above sea level. It is projected with initial horizontal speed of 2m/s.
a. How far from the foot of the hill does it land?
b. How long does it take to hit the ground?
c. With what speed does it hit the ground?
d. With what velocity does it hit the ground?
