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A 500-eV electron and a 300-eV electron trapped in a uniform magnetic field move in circular paths in a place perpendicular to the manetic field
A 60.0 g mass is attached to the bottom of a vertical spring and set vibrating. Find the frequency of oscillation
A loudspeaker diaphragm is oscillating in simple harmonic motion with a frequency of 330 Hz, What is the magnitude of the maximum acceleration
When a 47.0-V emf device is placed across two resistors in series, a current of 4.0 A is flowing in each of the resistors. obtain the magnitude of the larger of the two resistances
A Piece of ice of mass mi at 0 C is placed in water of mass mw at 20 C. The system is in a container of negligible heat capacity, what is the equilibrium temperature of the system
A converging lens has a focal lenght of 20cm. determine Where is the image located
A projectile is launched straight up at 59.5 m/s from a height of 76 m, at the edge of a sheer cliff. Find the maximum height of the projectile above the point of firing
A jet lands at 14.8 m/s, applying the brakes 2.19 s after landing. Find the acceleration needed to stop the jet within 5.89 102 m
A container holds 2.9 mol of gas. The total average kinetic energy of the gas molecules in the container is equal to the kinetic energy of a 8.1x10-3 kg bullet with a speed of 750 m/s
Suppose a 7.1 eV electron and a 9.77 eV positron collide, Find the frequency of these new photons
A 1,500kg Jeep is parked on a 30? slope, facing uphill (this is been done in right now in "Camp Jeep" en el Hiram Bithorn). Find the normal force exerted by the road on the front wheel
An advertisement claims that a centrifuge takes up only 0.127m of bench space but can produce a radial acceleration of 3000g (g= 9.8m/s^2) at 5000 rev/min
A wheel is rotating about an axis that is in the z-direction. The angular velocity is w = ?6.00 rad/s at t = 0, What is the angular displacement (change in angle) of the wheel at t = 7.00s
Suppose an electron is accelerated from rest through a difference in potential of V = 6.23 V. Find the speed of the electron after the collision
A helium weather balloon is used to lift a meteorological sensor package high up into the atmosphere. Calculate the number of moles of helium in the balloon
In space, an asteroid of mass 5,000 kg is hit by an object of mass 1000 kg and travelling at 1,000 m/s with respect to the asteroid. what will be the new speed of the asteroid
You sled down a hill of 45-m vertical height. The combined mass of you and your sled is 130kg. How much work was doen against friction during your decent
A spring with k=620 N/M is stretched with a tension of 40 N. What is the potential energy of the stretched spring
A 5-kg rock is dropped off a 30-m high building. If the rock is dropped from rest, what is the average power supplied by gravity
A 55-kg mass ice skater standing stationary on very slipper ice (negligible friction) throws a 0.45 kg baseball with a speed of 27 m/s in the horizonatal direction
Two Skaters collide and hold on to each other on a frictionless floor. find direction of the velocity of these skaters after the collision
A vertical cylindrical tank contains 1.80 mol of an ideal gas under a pressure of 1.00 atm at 20.0oC. What is the mass of this piston
If a capacitor has the initial charge of 5.0uC, L = 0.080H, C = 10uF, and R = 0, What is the maximum energy stored in the inductor
A small coin, initially at rest, begins falling. If the clock starts when the coin begins to fall, what is the magnitude of the coin\'s displacement
The Ka of cyanic acid, HOCN is 3.5 x 10-4. Calculate the pH of a 0.804 M solution of HOCN? Assume you do not have to use the quadratic formula