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The electron beam emerging from a certain high-energy electron accelerator has a circular cross section of radius 1.45 mm.
What is the maximum increase possible in the temperature of the water (in degrees Celsius) going from the top to the bottom of the waterfall? Assume it absorbs, as thermal energy, all its decrease i
If the potential energy of the pendulum-Earth system is taken to be zero at the stone's lowest point, what is the total mechanical energy of the system? (in Joules)
By how much does the spring stretch if it pulls on the sled horizontally? By how much does the spring stretch if it pulls on the sled at 30.0 above the horizontal?
You push with a horizontal force of 28.7 against a 16.0 box, pressing it against a rough wall to hold it in place. The coefficients of kinetic and static friction between this box and the wall are 0
How far does the car travel after the driver steps on the brakes before coming to rest?
Is an adiabatic process and example of a quasi-static process? Please explain throughly. I know an adiabatic process has no heat transfer, and a quasi-staic one is so slow that thermal equilibrium i
Suppose that the three quarks are equidistant from one another. Take the distance to be 1.50×10^-15 m and calculate the potential energy of the subsystem of two "up" quarks. (MeV) Calculate th
There are two solenoids, one with 100 turns and the other with 200 turns. If both carry the same current, will the one with more turns necessarily produce a stronger magnetic field at its center? pl
An ion having charge +6e is traveling horizontally to the left at 8.55 km/s. when it enters a magnetic field that is perpendicular to its velocity and deflects it downward with an initial magnetic f
1. An Aluminum block weighs 12N in air and 8N in water. What is the mass of the block? 2. How much energy would it take to transform 76g of water to steam at 125C?
A solenoid contains 705 coils of very thin wire evenly wrapped over a length of 17.0cm . Each coil is 2.50 cm in diameter. If this solenoid carries a current of 6.60A , what is the magnetic field at
A wire is formed into a circle having a diameter of 10.2 cm and is placed in a uniform magnetic field of 3.24 mT. The wire carries a current of 5.00 A. Find the maximum torque on the wire. Please ex
A plant falls from the windowsill of an apartment in a very tall building. If the floor of your apartment is 30.48 m above the ground, and it takes the plant 0.1280 seconds to cross your 9 ft window
After a delay of 0.181 seconds, the rightfielder starts moving in a straight line towards the ball's estimated landing location. He can accelerate from rest to a top speed of 8.4 m/s in 6.90 seconds
X-ray photons of wavelength 0.0248 nm are incident on a target and the Compton-scattered photons are observed at 90 degrees. What is the momentum (magnitude and direction) of the scattered electrons
A batter hits a baseball 2.00 ft above the ground towards 3rd base. If the ball takes 0.52 s to get to the 3rd baseman (who is 95 ft from homeplate) and it passes just above the jumping 3rd baseman'
After 21 seconds, the rocket engine cuts out. What is the maximum height attained by the rocket? How far does the rocket travel in the horizontal direction? What is the total flight time?
At what velocity must the plane fly (relative to earth) to maintain her original heading? At what angle and which direction?
A child slides down a slide with a 29o degree incline, and at the bottom her speed is precisely one-fourth what it would have been if the slide had been frictionless. Calculate the coefficient of ki
The positron is a particle with the same mass as an electron but charge +e. A positron in a bubble chamber moves perpendicular to a 3.4T magnetic field. a) If the positron's kinetic energy is 27eV ,
A velocity selector has its electric field directed vertically downward, with magnitude 130N/C . a) Find the magnitude of the horizontal magnetic field required to select charged particles moving at 3
A proton in the upper atmosphere moves at 8.4×10^5 m/s , perpendicular to Earth's magnetic field, which at that point has magnitude 5.3×10^?5 T. Find the curvature radius of the proton's
A 1.30T magnetic field points northeast. Find the magnitude and the direction (either up or down) of the force on a +0.45C charge that is moving 15m/s toward the: a) north b) east c) south d) west e
A 30.0 cm diameter loop is rotated in a uniform electric field until the position of maximum electric flux is found. The flux in this position is 6.00 multiplied by 105 N·m2/C. What is the ma