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A bottle rocket can shoot its projectile vertically to a height of 23.0 . (You can ignore air resistance.) At what angle should the bottle rocket be fired to reach its maximum horizontal range? What
A man stands on the roof of a 19.0 -tall building and throws a rock with a velocity of magnitude 24.0 at an angle of 30.0 above the horizontal. You can ignore air resistance. A. Calculate the maximu
You have two capacitors, one with capacitance 19.5 oF and the other of unknown capacitance. You connect the two capacitors in series with a voltage difference of 341-V applied across the capacitors.
A 1800kg car is traveling along a straight road at 20m/s . Two seconds later its speed is 24m/s . What is the magnitude of the net force acting on the car during this time?
At the point where the spring is compressed a distance d (before the maximum compression, as the elevator is still dropping), find an expression for the speed.
There are a total of four pulleys. One pulley is on the 20 degree mark with 90 gm (grams per meter) over it. Another pulley is on the 140 degree mark with a total of 250 gm over it.
A bowling ball (mass = 4.9 kg, radius = 0.11 m) and a billiard ball (mass = 0.37 kg, radius = 0.028 m) may each be treated as uniform spheres. What is the magnitude of the maximum gravitational forc
How far below the top of the well is the surface of the water? I found the correct answer here. =18.4 (b) If the travel time for the sound is ignored, what percentage error is introduced when the de
what are: (a) The magnitude. (b) The angle (relative to the positive direction of thex-axis) of the net force on the particale. (c) What is the angle of the particle's direction oftravel?
A coal-fired electric power plant has an overall efficiency of 35% and an output of 1,997 megawatts. How many terajoules (trillions of joules) of waste heat does it reject to the environment each da
describe what you think the behavior of the circuit will be. Give your reasoning. Explain what is going on in each component of the circuit. Sketch a qualitative graph of the bulb's brightness vs. t
A proton is released from rest at the positive plate of a parallel-plate capacitor. It crosses the capacitor and reaches the negative plate with a speed of 4.80×10^4 m/s What will be the proto
A proton is released from rest in a uniform electric field of magnitude 421 N/C. (a) Find the electric force on the proton. (b) Find the acceleration of the proton. (c) Find the distance it travels
Two point charges are on the y-axis. A 5.0 µC charge is located at y = 1.15 cm, and a -2.32 µC charge is located at y = -1.40 cm. (a) Find the total electric potential at the origin. (b)
What is the maximum distance that the box descends below its initial position? At what value of does the box return to its initial position?
A long solenoid has a length of 0.76 m and contains 1100 turns of wire. There is a current of 3.2 A in the wire. What is the magnitude of the magnetic field within the solenoid?
What is the frequency (Hz) of an oscillator with a period of 20 seconds? (show how to solve please) how much force is needed to stretch a spring (k=1000 N/m) by 6 cm?
An electron is accelerated by a synchrotron accelerator to an energy of 2GeV. What is its velocity and what is the ratio between its mass after the acceleration and the rest mass?
A certain element has a mass per mole of 54.9380 g/mol. What is the mass of a single atom in (a) atomic mass units and (b) kilograms? (c) How many moles of atoms are in a 258-g sample?
A bug crawls outward from the center of a compact disc spinning at 210 revolutions per minute. The coefficient of static friction between the bug's sticky feet and the disc surface is 1.1 How far do
Bob walks 390m south, then jogs 660m southwest, then walks 390m in a direction 35^\circ east of north. a) find the displacement that will return Bob to his starting point by the most direct route b)
The train didn't exceed the 45 speed limit on this curve. or The train did exceed the 45 speed limit on this curve, thus provoking the derailment.
Measuring the Speed of Light: Michelson In 1926, Albert Michelson measured the speed of light with a technique similar to that used by Fizeau. Michelson used an eight-sided mirror rotating at 528 re
Bill then travels to Antarctica and applies the same voltage to the same wire. What current does he register there if the temperature is -88.0°C? Assume that no change occurs in the wire's shape
What is the time (in seconds) it takes for a 10-µm diameter dust particulate to settle from the ceiling vent to the floor in a classroom that measures 10 meters x 15 meters x 2.5 meters.