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For a single, isolated point charge carrying a charge of q = 68.7 pC, one equipotential surface consists of a sphere of radius 22.4 mm centered on the point charge as shown. What is the potential on
A small glass bead charged to 6.6 nC is in the plane that bisects a thin, uniformly charged, 10-cm -long glass rod and is 4.0 cm from the rod's center. The bead is repelled from the rod with a
How much energy is transferred to her eardrums each second ? the answer should be in microJoules.
The star Vega has a measured angular diameter of 3.24 mas (milliarcseconds) and a flux of 2.84 x 10-8 W/m2. Its distance is 8.1 pc. What are Vega's diameter and effective temperature?
After 7 seconds, the speed of the automobile is 60 mph. Use this information to estimate the power required for this automobile to travel at 65 mph on this road.
A bullet weighing 50 grams and traveling at 200 m/s is shot into a stationary block of wood weighing 4 kg where it lodges. Determine how much each of the following changes from before the bullet str
A 1 kg projectile is shot straight up from the earth's surface with a velocity of 100 m/s and reaches a height of 300 m before it reverses course and starts downward. How much work did the surroundi
At the moment the train begins to accelerate forward at 0.345 m/s2 the cannon fires a projectile at 182 m/s. The cannon points in the direction that the train is moving. What is the horizontal range
A medical defibrillator stores 1000 J of energy in a 100 microF capacitor. What is the voltage across the capacitor?
Let the sign of Q2 be changed from positive to negative. At which position can the point charge q be placed now so that the net electrostatic force on it is zero?
If a ball is horizontally projected from a height (y) of 0.83m above ground. How long does it take to hit the ground, if g is 9.8m/s^2? (Hint: Assume the initial vertical velocity to be zero and us
Three vectors length A=67.0, B=39.3, and C=44.0. The angles are a=27.7 and b=54.2, and c points along the negative y-axis. determine the length of vector A-B+C
What minimum initial speed would be required to make it safely across the canyon? Express your answer in m/s and mph. Ignore air drag.
Radioactive isotopes decay according to a first order process. If N(t) is the number of atoms of a radioactive isotope at time t, then N(t)=N(0)e^(-kt).
Hydrogen peroxide decomposes in water by a first order process. A 0.156 M solution of H2O2 decomposes with an initial rate of 1.14E-5 M/s. what is the rate constant for the decomposition reaction? W
The output of a certain laser pointer consists of a beam with uniform irradiance across the beam's cross section. Assume a beam power of 1.00mW and beam diameter of 1.00mm. (a) Calculate the beam i
A solid metal sphere of radius 3.00 m carries a total charge of -3.00 µC. What is the magnitude of the electric field at each of the following distances from the sphere's center?
1) What does it mean for an object to become electrically charged ? 2) What is polarization?
Bob has just finished climbing a sheer cliff above a beach, and wants to figure out how high he climbed. All he has to use, however, is a baseball, a stopwatch, and a friend on the ground below with
When striking, the pike, a predatory fish, can accelerate from rest to a speed of 3.5 m/s in 0.15 s. What is the acceleration of the pike during this strike? How far does the pike move during this s
A point charge q1 = 3.85nC is located on the x-axis at x = 2.00m , and a second point charge q2 = -5.55nC is on the y-axis at y = 1.10m . A) What is the total electric flux due to these two point c
Your friend who works for the college radio station must make electric-field measurements for a report to be filed with the station's application for license renewal.
A parallel-plate capacitor is formed from two circular 12.5-cm-diameter plates spaced 1.0 mm apart. The electric field strength between the two plates is 3000000 N/C. What is the charge (in nC) on t
On 2003 august 27, mars was in opposition as seen from the Earth. On 2005 July 14 (687 days later), mars was in western quadrature as seen from the earth. a. What was the distance of Mars from
What percentage of hydrogen molecules have a speed within 1.00 m/s of the most probable speed? Root mean square velocity is 1882.7 m/s and most probable speed is 1537.2.