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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.
A two-resistor voltage divider employing a 3.3-kQ and a 6.8-kQ resistor is connected to a 9-V ground-referenced power supply to provide a relatively low voltage. what output voltage (measured to gro
A girl is standing at the edge of a cliff 111 m above the ground. She reaches out over the edge of the cliff and throws a rock straight upward with a speed of 8.79 m/s. What is the speed of the rock
A fighter jet lands on the deck of an aircraft carrier. It touches down with a speed of 73.5 m/s and comes to a complete stop over a distance of 194.8 m. If this process happens with constant decele
If the angle with respect to the vertical that the strings form is 22.0 degrees, what is the charge on each ball? Please give your answer in micro-coulomb (i.e. do not enter a unit, but calculate yo
The left compartment is filled with 0.050 mole of helium gas at 465 K, and the right compartment contains 0.025 mole of helium gas at 207 K. The right compartment also has a piston to which a force
An electron is released from rest at a distance of 0.500m from a large insulating sheet of charge that has uniform surface charge density 3.70×10-12C/m2 .