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A 0.10 g plastic bead is charged by the addition of 1.0 x10^10 excess electrons (i.e. so the bead becomes negatively charged). What electric field (magnitude and direction) will cause the bead to h
A rigid tank contains 1.80 moles of an ideal gas. Determine the number of moles of gas that must be withdrawn from the tank to lower the pressure of the gas from 27.1 atm to 5.20 atm. Assume the vol
An empty capacitor is connected to a 12.2-V battery and charged up. The capacitor is then disconnected from the battery, and a slab of dielectric material (κ = 2.8) is inserted between the pla
A magnetic field of 1.4 T is perpendicular to a square coil of 16 turns. The length of each side of the coil is 5 cm. Find the magnetic flux through an individual turn of the coil.
The coefficient of kinetic friction between the block and incline is = 0.45. The mass of the spring is negligible.
The cylinder has a height of 5.80 cm, a face area of 13.0 cm2 on the top and bottom, and a density of 0.344 g/cm3, and 2.20 cm of its height is above the water surface. The water has a density of 1
Suppose the stationary observer sounds a horn that is identical to the one on the train. What frequency is heard from this horn by a passenger on the train?
Speedboat A negotiates a curve whose radius is 136 m. Speedboat B negotiates a curve whose radius is 218 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the sp
A meter stick is pivoted at the 0.50-m line. A 3.0-kg object is hung from the 0.15-m line. Where should a 5.0-kg object be hung to achieve equilibrium (the meter stick oriented horizontal and motio
An 8.7 hour trip is made at an average speed of 73.0 km/hr. If the first third of the trip was driven at 96.5 km/hr , what was the average speed for the rest of the journey.
What thickness t of the glass with an index of refraction 1.60 must be interposed between the lens and P for the image to be formed at P', located 0.30 cm to the right of P?
How do your calculations support the importance of stepping voltages up with transformers for long distance transmission.
One car sounds a horn whose frequency is 235 Hz and a person in the other car hears a frequency of 223 Hz. What is the speed of the cars?
The pilot of a plane measures an air velocity of 151 km/h south. An observer on the ground sees the plane pass overhead at a velocity of 119 km/h toward the north. What is the velocity of the wind t
What are the possible fundamental frequencies of the retuned string?
Find the magnetic force on the electron when the earth's field has a horizontal component of 0.250 G and dips 60.0° below the horizontal.
A 65 kg passenger is rounding the bottom of a curve (with radius 17 m) of a roller coaster. If the coasters speed is 20 m/s, what is the normal force of the seat on the passengers butt?
square coil of wire lies initially in the xy plane and is centered at the origin. A magnetic field B points in the positive z direction. If the loop of wire is then rotated about the x-axis, would y
A 55.0 kg circus performer oscillates up and down at the end of a long elastic rope at a rate of once every 8.00 s. The elastic rope obeys Hooke's Law. By how much is the rope extended beyond its u
The chair slides along the floor. Using Newton's laws, calculate n, the magnitude of the normal force that the floor exerts on the chair.
A proton traveling horizontally enters a region in which a uniform electric field is directed upward. What is the direction of the force on the proton?
what is the average force exerted on the ball by the bat? Neglect the weight of the ball, since it is so much less than the force of the bat. Choose the direction of the incoming ball as the positiv
To give a 22 kg child a ride, two teenagers pull on a 3.6 kg sled with ropes. Both teenagers pull with a force of F = 55 N at an angle of 35° relative to the forward direction, which is the dire
A typical American house requires an average 20 kW for heating. How many homes could be heated with the waste heat of this one power plant?
A car traveling on a flat (unbanked) circular track accelerates uniformly from rest with a tangential acceleration of 1.90 m/s2. The car makes it one quarter of the way around the circle before it s