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A 22.5 g bullet is fired from a rifle. It takes 2.60 10-3 s for the bullet to travel the length of the barrel, find the average net force exerted on the bullet
A particle of charge +9.2 ?C is released from rest at the point x = 55 cm on an x axis, What is the kinetic energy of the particle at the instant it has moved 12 cm if Q = +61
A 17.00 kg block is pushed up a frictionless inclined plane that makes an angle of ? = 33 o with the horizontal direction. What force is needed to move the block with constant speed
An ambulance with a siren emitting a whine at 1200 Hz overtakes and passes a cyclist pedaling a bike at 2.44 m/s, How fast is the ambulance moving
Gas is confined in a tank at a pressure of 11.9 atm and a temperature of 23.0°C. If two-thirds of the gas is withdrawn and the temperature is raised to 76.0°C
A 7.01- g bullet is moving at 563.00 m/s as it leaves the 0.58- m-long barrel of a rifle. What is the average force on the bullet as it moves down the barrel
2 stationary positive point charges, charge 1 of magnitude 3.20nC and charge 2 of magnitude 1.60nC, What is the speed Vfinal of the electron when it is 10.0cm from charge 1
A 85-tonne (1 t = 1000 kg) spacecraft moving in the + x-direction at 0.38m/s docks with a 70-tonne craft moving in the -x-direction at 0.62m/s
Block 1, of mass m1 = 1.70kg , moves along a frictionless air track with speed v1 = 25.0m/s, Find the magnitude pi of the total initial momentum of the two-block system
A carbon dioxide laser emits a sinusoidal electromagnetic wave that travels in vacuum in the negative x-direction, Write vector equations for E and B as functions of time and position
Two identical small metal spheres are separated by 1.00 x 10^5 m and exert an 18.9 N repulsive force on each other, determine the charges of the spheres before the connection
A circuit has three resistors in series with a 36 volt source, The voltage across the third resistor is 20 V, Determine the three resistor values
A torsion pendulum is made from a disk of mass m = 5.7 kg and radius R = 0.67 m, What is the torsion constant of this pendulum
A 1g plastic pellet is accelerated by an electirc field of 1000V/m over a gap of 12 cm, What is the velocity of the pellet after crossing the gap
Two motorcycles are traveling in opposite directions at the same speed when one of the cyclists blasts his horn, what is the speed of the motorcycles
A child playing tee ball hits a stationary 60g ball with a 220g bat swinging initially at 4.0m/s, What's the bat's post-impact speed
The nucleus in an iron atom has a radius of about 4.0 X 10-15 m and contains 26 protons, What is the magnitude of the gravitational force between those same two protons
In a simplified model of a hydrogen atom, the electron moves around the proton nucleus in a circular orbit of radius 0.53 × 10^?10 m, Determine the period of the circular motion
An electron field of 8.50e5 V/m is desired between two parallel plates each of area 45cm^2 and seperated by 2.45 mm of air
Length A is measured to be 7.5cm±0.3 cm and length B is 7.0cm±0.6cm. What is the difference between the two lengths, LB - LA
Let's build a helium atom. Start with a nucleus with 2 protons and 2 neutrons, Calculate the energy gained by the system constructing this atom
Lightning can be studied with a Van de Graaff generator, which consists of a spherical dome on which charge is continuously deposited by a moving belt, What is the maximum charge on the dome
An electric dipole of dipole moment 4.5 x 10-9 C·m is in a 250 N/C electric field, what is the potential energy
A spherical shell of radius R = 8.0 cm has a total charge Q = - 900nC uniformly distributed on its surface, Write the net electric field at the point P in unit vector notation
A charge +q is at the origin. A charge -2q is at x = 8.50 m on the +x axis, For what finite value of x is the electric field zero