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An electron moving parallel to the x axis has an initial speed of 3.70 x 106 m/s at the origin. Its speed is reduced to 1.40 x 105 m/s at the point x = 2.00cm, a) calculate the electric potential dif
A 2.0µF capacitor and a 4.0µF capacitor are connected in series across 1000 V. The charged capacitors are then disconnected from the source and connected to each other with terminals of
An initially neutral conductor contains a hollow cavity in which there is a + 100 nC point charge. A charged rod transfer -50 nC to the conductor. Afterward, what is the charge (a) on the inner wall
A skier slides horizontally along the snow for a distance of 25 m before coming to rest. The coefficient of kinetic friction between the skier and the snow is µk = 0.040. Initially, how fast w
(a) How long must a 0.60 mm diameter iron wire be to have a 0.52 A current when connected to the terminals of a 1.5 V flashlight battery? (b) What is the current if the wire is half this length?
In an ionic solution, 5.8 1015 positive ions with charge +2e pass to the right each second while 6.3 x 1015 negative ions with charge -e pass to the left. What are the magnitude and direction of curre
The ions will separate until they make an electric field that exactly balances the magnetic force. This electric field produces a voltage that can be measured.a. What force is felt by a singly ioniz
A solenoid that is 91.4 cm long has a cross-sectional area of 15.0 cm2. There are 1000 turns of wire carrying a current of 6.74 A. (a) Calculate the energy density of the magnetic field inside the s
A.) What is the minimum velocity needed at the top so that the rider completes the loop successfully? B.) Find the tangential and centripetal acceleration at the top of the loop using the velocity fro
A massless spring has a spring constant of k = 7.85 N/m. A mass M = 0.425 kg is placed on the spring, and it is allowed to oscillate. What is the period T of oscillation? Show your work.
A spring of constant k=11.75 N/m is hung vertically. A 0.500 kg mass is suspended from the spring. What is the displacement of the end of the spring due to the weight of the 0.500 kg mass? Show your w
A 50g ball travelling at 25 m/s is bounced off a brick wall and rebounds at 22 m/s. If the ball is in contact with the wall for 3.5 ms, what is the average acceleration of the ball during this time
(a) What are the x- and y- components of the velocity of the ball 3.20s after it leaves the cannon? (b) What are the x- and y- components of the displacement of the arrow during the 3.20s interval?
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.30 m/s at an angle of 23.0° below the horizontal. It strikes the ground 3.00 s later.
The sphere slides along the ground, with the same point on the sphere always touching the ground.
Two long, straight wires are separated by a distance of 11.0 cm. One wire carries a current of 2.98 A, the other carries a current of 4.22 A. Calculate the force per meter exerted on the 2.98 A wire
A 45.0-kg crate is dragged at constant velocity 8.20-m across a horizontal floor with a rope making a 30 degree angle above the horizontal. The coefficient of kinetic friction is 0.250. Find the wor
Suppose W is the energy transferred stretchinig a spring from 0 to 0.10 m. The amount of work done stretching the same spring from 0.10 m to 0.20 m is:
An airplane has an effective wing surface area of 116 m2 that is generating the lifting force. In level flight the air speed over the top of the wings is 62.0 m/s, while the air speed beneath the wi
What is the y-component of the magnetic force on the first particle due to the second?
When the magnetic flux through a single loop of wire increases by 30 tm^2, an average current of 40A is induced in the wire. Assuming that the wire has a resistance of 2.5 Ohms a(a) over what period
Two workers hold a heavy pail. Its mass is unknown. One worker exerts a 220N force at 137 degrees from vertical. The other worker exerts a 170N force. What is the weight of the pail?
What is the work done on the gas if it is compressed at constant pressure to one-quarter its initial volume?
Find the amount of time it takes for the target mass (m = 1kg) to raise its temperature by 100K if the current of the beam is I = 20µA. Note that the specific heat of iron is c = 500J/kg K, an
A block is released from rest when the spring is stretched a distance d. If k = 50 N/m, m = 0.50 kg, d = 10 cm, and the coefficient of kinetic friction between the block and the horizontal surface i