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A nonconducting plate with infinite dimensions carries a uniform surface charge density of 9.1 µC/cm2. What is the electric field 5.9 cm in front of the plate? Answer in units of N/C.
Estimate how many books can be shelved in a college library with 3500 of floor space. Assume 5 shelves high, having books on both sides, with corridors 1.5 wide. Assume books are about the size of t
A circular disk with surface with surface charge density 2 x 10-2 C/m is surrounded by a sphere with radius of 1m. If the flux through the sphere is 5.2 x 10-2 Vm, what is the diameter of the disk?
In a Fourth of July celebration, a firecracker is launched from ground level with an initial velocity of 28.6 at 39.1 from the vertical.
A particle of charge +3.0 x 10-8 is in a unifrom electric field directed to the left. It is released from rest and moves a distance of 5.0 cm and its kinetic energy is increased by +4.5 x 10-4 J. a)
Two large, parallel, metal plates carry opposite charges. They are separated by 0.1 m and the potential difference between them is 500. V. a) What is the magnitude of the electric field, if it is un
Should it be in series or in parallel with the 34.8-μF capacitor? What should be its capacitance? What If? The next circuit comes down the assembly line with capacitance 29.8 μF between A and
Every second at Niagara Falls, approximately 5000 m3 of water falls a distance of 50.0 m. What is the increase in entropy per second due to the falling water? Assume the mass of the surroundings is
A refrigerator operates in a well insulated closed room. For some time the door of the refrigerator is left open. Will the temp of the room decerese increase or stay constant, after the door has bee
When the mass is halfway between its equilibrium position and the end-point, its speed is measured to be 38.8 cm/s. Calculate the mass of the block.
The hose lies horizontally on the ground, and a stream sprays vertically out of a small leak to a height of 0.62 meters. What is the pressure inside the hose?
A solid sphere has a radius of 0.35 m and a mass of 120 kg. How much work is required to get the sphere rolling with an angular speed of 40 rad/s on a horizontal surface? Assume the sphere starts fr
A position vector in the first quadrant has an x component of 4 m and a magnitude of 11 m. What is the value of its y component?
Both containers are filled initially to the same height of 1.00 m, one with water, the other with mercury. The valve is then opened. Water and mercury are immiscible. Determine the fluid level in th
Two equal point charges each of magnitude 2.00 x 10^-6 C are located on the x axis, one at x= 1.00m, the other at x= -1.00m. a) Determine the electric field on the y axis at y= 0.500 m.
A point charge of -5.20 x 10^-6 C is located at the origin. Find the electric field a) on the x axis at x= 3.00 m.
How does the heliocentric theory explain the basic observation that mercury and venus are always observed to be close to te sun, while mars, jupiter and saturn can be viewed far from the sun?
A curve of radius 139 m is banked at an angle of 9°. An 758-kg car negotiates the curve at 77 km/h without skidding. Neglect the effects of air drag and rolling friction. Find the following. (a
The frequency of note A is 440.0 Hz. The frequency of note C is 523.3 Hz. Find the frequencies (answers in Hz) and wavelengths (answers in m) in air of notes A and C.
An electron is projected at an angle of 30 degrees above the horizontal at a speed of 8.20x10^5 m/s in a region where the electric field is 390 j N/C. What is the maximum height reached by the elect
A proton has an initial velocity of 4.50 x 10^5 m/s in the horizontal direction. It enters a uniform electirc field of 9.60 N/C directed vertically. Find the vertical displacement of the proton duri
A 2.60-g lead bullet at 32.0°C is fired at a speed of 210 m/s into a large block of ice at 0°C, in which it becomes embedded. What quantity of ice melts?
A roller coaster has a vertical drop of 68.6m. The speed at the end of the drop is 35.6 m/s. The car is at rest at the end of the drop. What percent of the initial mechanical energy is dissipated by
It has a constant angular acceleration of 35.0 until a circuit breaker trips at time = 2.10 . From then on, it turns through an angle 438 as it coasts to a stop at constant angular acceleration.Thr
A model rocket is fired straight up from ground level with a constant acceleration of 50m*s^-2 until the engine runs out of fuel after 4 s. Neglecting air resistance, find: A) the height of the rock